django.contrib.gis.gdal.error.GDALException - python examples

Here are the examples of the python api django.contrib.gis.gdal.error.GDALException taken from open source projects. By voting up you can indicate which examples are most useful and appropriate.

41 Examples 7

3 View Complete Implementation : envelope.py
Copyright MIT License
Author : bpgc-cte
    def __eq__(self, other):
        """
        Returns True if the envelopes are equivalent; can compare against
        other Envelopes and 4-tuples.
        """
        if isinstance(other, Envelope):
            return (self.min_x == other.min_x) and (self.min_y == other.min_y) and \
                   (self.max_x == other.max_x) and (self.max_y == other.max_y)
        elif isinstance(other, tuple) and len(other) == 4:
            return (self.min_x == other[0]) and (self.min_y == other[1]) and \
                   (self.max_x == other[2]) and (self.max_y == other[3])
        else:
            raise GDALException('Equivalence testing only works with other Envelopes.')

3 View Complete Implementation : feature.py
Copyright MIT License
Author : bpgc-cte
    def __init__(self, feat, layer):
        """
        Initializes Feature from a pointer and its Layer object.
        """
        if not feat:
            raise GDALException('Cannot create OGR Feature, invalid pointer given.')
        self.ptr = feat
        self._layer = layer

3 View Complete Implementation : field.py
Copyright MIT License
Author : bpgc-cte
    def as_datetime(self):
        "Retrieves the Field's value as a tuple of date & time components."
        yy, mm, dd, hh, mn, ss, tz = [c_int() for i in range(7)]
        status = capi.get_field_as_datetime(
            self._feat.ptr, self._index, byref(yy), byref(mm), byref(dd),
            byref(hh), byref(mn), byref(ss), byref(tz))
        if status:
            return (yy, mm, dd, hh, mn, ss, tz)
        else:
            raise GDALException('Unable to retrieve date & time information from the field.')

3 View Complete Implementation : geometries.py
Copyright MIT License
Author : bpgc-cte
    def __setstate__(self, state):
        wkb, srs = state
        ptr = capi.from_wkb(wkb, None, byref(c_void_p()), len(wkb))
        if not ptr:
            raise GDALException('Invalid OGRGeometry loaded from pickled state.')
        self.ptr = ptr
        self.srs = srs

3 View Complete Implementation : geometries.py
Copyright MIT License
Author : bpgc-cte
    def add(self, geom):
        "Add the geometry to this Geometry Collection."
        if isinstance(geom, OGRGeometry):
            if isinstance(geom, self.__clast__):
                for g in geom:
                    capi.add_geom(self.ptr, g.ptr)
            else:
                capi.add_geom(self.ptr, geom.ptr)
        elif isinstance(geom, six.string_types):
            tmp = OGRGeometry(geom)
            capi.add_geom(self.ptr, tmp.ptr)
        else:
            raise GDALException('Must add an OGRGeometry.')

3 View Complete Implementation : layer.py
Copyright MIT License
Author : bpgc-cte
    def __init__(self, layer_ptr, ds):
        """
        Initializes on an OGR C pointer to the Layer and the `DataSource` object
        that owns this layer.  The `DataSource` object is required so that a
        reference to it is kept with this Layer.  This prevents garbage
        collection of the `DataSource` while this Layer is still active.
        """
        if not layer_ptr:
            raise GDALException('Cannot create Layer, invalid pointer given')
        self.ptr = layer_ptr
        self._ds = ds
        self._ldefn = capi.get_layer_defn(self._ptr)
        # Does the Layer support random reading?
        self._random_read = self.test_capability(b'RandomRead')

3 View Complete Implementation : layer.py
Copyright MIT License
Author : bpgc-cte
    def get_fields(self, field_name):
        """
        Returns a list containing the given field name for every Feature
        in the Layer.
        """
        if field_name not in self.fields:
            raise GDALException('invalid field name: %s' % field_name)
        return [feat.get(field_name) for feat in self]

3 View Complete Implementation : libgdal.py
Copyright MIT License
Author : bpgc-cte
def gdal_version_info():
    ver = gdal_version().decode()
    m = version_regex.match(ver)
    if not m:
        raise GDALException('Could not parse GDAL version string "%s"' % ver)
    return {key: m.group(key) for key in ('major', 'minor', 'subminor')}

3 View Complete Implementation : errcheck.py
Copyright MIT License
Author : bpgc-cte
def check_geom(result, func, cargs):
    "Checks a function that returns a geometry."
    # OGR_G_Clone may return an integer, even though the
    # restype is set to c_void_p
    if isinstance(result, six.integer_types):
        result = c_void_p(result)
    if not result:
        raise GDALException('Invalid geometry pointer returned from "%s".' % func.__name__)
    return result

3 View Complete Implementation : errcheck.py
Copyright MIT License
Author : bpgc-cte
def check_pointer(result, func, cargs):
    "Makes sure the result pointer is valid."
    if isinstance(result, six.integer_types):
        result = c_void_p(result)
    if result:
        return result
    else:
        raise GDALException('Invalid pointer returned from "%s"' % func.__name__)

3 View Complete Implementation : source.py
Copyright MIT License
Author : bpgc-cte
    def _flush(self):
        """
        Flush all data from memory into the source file if it exists.
        The data that needs flushing are geotransforms, coordinate systems,
        nodata_values and pixel values. This function will be called
        automatically wherever it is needed.
        """
        # Raise an Exception if the value is being changed in read mode.
        if not self._write:
            raise GDALException('Raster needs to be opened in write mode to change values.')
        capi.flush_ds(self._ptr)

3 View Complete Implementation : base.py
Copyright Apache License 2.0
Author : drexly
    def _get_ptr(self):
        # Raise an exception if the pointer isn't valid don't
        # want to be pasting NULL pointers to routines --
        # that's very bad.
        if self._ptr:
            return self._ptr
        else:
            raise GDALException('GDAL %s pointer no longer valid.' % self.__clast__.__name__)

3 View Complete Implementation : base.py
Copyright Apache License 2.0
Author : edisonlz
    def _get_ptr(self):
        # Raise an exception if the pointer isn't valid don't
        # want to be pasting NULL pointers to routines --
        # that's very bad.
        if self._ptr: return self._ptr
        else: raise GDALException('GDAL %s pointer no longer valid.' % self.__clast__.__name__)

3 View Complete Implementation : envelope.py
Copyright MIT License
Author : rizwansoaib
    def __eq__(self, other):
        """
        Return True if the envelopes are equivalent; can compare against
        other Envelopes and 4-tuples.
        """
        if isinstance(other, Envelope):
            return (self.min_x == other.min_x) and (self.min_y == other.min_y) and \
                   (self.max_x == other.max_x) and (self.max_y == other.max_y)
        elif isinstance(other, tuple) and len(other) == 4:
            return (self.min_x == other[0]) and (self.min_y == other[1]) and \
                   (self.max_x == other[2]) and (self.max_y == other[3])
        else:
            raise GDALException('Equivalence testing only works with other Envelopes.')

3 View Complete Implementation : feature.py
Copyright MIT License
Author : rizwansoaib
    def __init__(self, feat, layer):
        """
        Initialize Feature from a pointer and its Layer object.
        """
        if not feat:
            raise GDALException('Cannot create OGR Feature, invalid pointer given.')
        self.ptr = feat
        self._layer = layer

3 View Complete Implementation : field.py
Copyright MIT License
Author : rizwansoaib
    def as_datetime(self):
        "Retrieve the Field's value as a tuple of date & time components."
        yy, mm, dd, hh, mn, ss, tz = [c_int() for i in range(7)]
        status = capi.get_field_as_datetime(
            self._feat.ptr, self._index, byref(yy), byref(mm), byref(dd),
            byref(hh), byref(mn), byref(ss), byref(tz))
        if status:
            return (yy, mm, dd, hh, mn, ss, tz)
        else:
            raise GDALException('Unable to retrieve date & time information from the field.')

3 View Complete Implementation : geometries.py
Copyright MIT License
Author : rizwansoaib
    def add(self, geom):
        "Add the geometry to this Geometry Collection."
        if isinstance(geom, OGRGeometry):
            if isinstance(geom, self.__clast__):
                for g in geom:
                    capi.add_geom(self.ptr, g.ptr)
            else:
                capi.add_geom(self.ptr, geom.ptr)
        elif isinstance(geom, str):
            tmp = OGRGeometry(geom)
            capi.add_geom(self.ptr, tmp.ptr)
        else:
            raise GDALException('Must add an OGRGeometry.')

3 View Complete Implementation : layer.py
Copyright MIT License
Author : rizwansoaib
    def __init__(self, layer_ptr, ds):
        """
        Initialize on an OGR C pointer to the Layer and the `DataSource` object
        that owns this layer.  The `DataSource` object is required so that a
        reference to it is kept with this Layer.  This prevents garbage
        collection of the `DataSource` while this Layer is still active.
        """
        if not layer_ptr:
            raise GDALException('Cannot create Layer, invalid pointer given')
        self.ptr = layer_ptr
        self._ds = ds
        self._ldefn = capi.get_layer_defn(self._ptr)
        # Does the Layer support random reading?
        self._random_read = self.test_capability(b'RandomRead')

3 View Complete Implementation : layer.py
Copyright MIT License
Author : rizwansoaib
    def get_fields(self, field_name):
        """
        Return a list containing the given field name for every Feature
        in the Layer.
        """
        if field_name not in self.fields:
            raise GDALException('invalid field name: %s' % field_name)
        return [feat.get(field_name) for feat in self]

3 View Complete Implementation : errcheck.py
Copyright MIT License
Author : rizwansoaib
def check_geom(result, func, cargs):
    "Check a function that returns a geometry."
    # OGR_G_Clone may return an integer, even though the
    # restype is set to c_void_p
    if isinstance(result, int):
        result = c_void_p(result)
    if not result:
        raise GDALException('Invalid geometry pointer returned from "%s".' % func.__name__)
    return result

3 View Complete Implementation : errcheck.py
Copyright MIT License
Author : rizwansoaib
def check_pointer(result, func, cargs):
    "Make sure the result pointer is valid."
    if isinstance(result, int):
        result = c_void_p(result)
    if result:
        return result
    else:
        raise GDALException('Invalid pointer returned from "%s"' % func.__name__)

0 View Complete Implementation : datasource.py
Copyright MIT License
Author : bpgc-cte
    def __init__(self, ds_input, ds_driver=False, write=False, encoding='utf-8'):
        # The write flag.
        if write:
            self._write = 1
        else:
            self._write = 0
        # See also http://trac.osgeo.org/gdal/wiki/rfc23_ogr_unicode
        self.encoding = encoding

        Driver.ensure_registered()

        if isinstance(ds_input, six.string_types):
            # The data source driver is a void pointer.
            ds_driver = Driver.ptr_type()
            try:
                # OGROpen will auto-detect the data source type.
                ds = capi.open_ds(force_bytes(ds_input), self._write, byref(ds_driver))
            except GDALException:
                # Making the error message more clear rather than something
                # like "Invalid pointer returned from OGROpen".
                raise GDALException('Could not open the datasource at "%s"' % ds_input)
        elif isinstance(ds_input, self.ptr_type) and isinstance(ds_driver, Driver.ptr_type):
            ds = ds_input
        else:
            raise GDALException('Invalid data source input type: %s' % type(ds_input))

        if ds:
            self.ptr = ds
            self.driver = Driver(ds_driver)
        else:
            # Raise an exception if the returned pointer is NULL
            raise GDALException('Invalid data source file "%s"' % ds_input)

0 View Complete Implementation : driver.py
Copyright MIT License
Author : bpgc-cte
    def __init__(self, dr_input):
        """
        Initializes an GDAL/OGR driver on either a string or integer input.
        """
        if isinstance(dr_input, six.string_types):
            # If a string name of the driver was pasted in
            self.ensure_registered()

            # Checking the alias dictionary (case-insensitive) to see if an
            # alias exists for the given driver.
            if dr_input.lower() in self._alias:
                name = self._alias[dr_input.lower()]
            else:
                name = dr_input

            # Attempting to get the GDAL/OGR driver by the string name.
            for iface in (vcapi, rcapi):
                driver = c_void_p(iface.get_driver_by_name(force_bytes(name)))
                if driver:
                    break
        elif isinstance(dr_input, int):
            self.ensure_registered()
            for iface in (vcapi, rcapi):
                driver = iface.get_driver(dr_input)
                if driver:
                    break
        elif isinstance(dr_input, c_void_p):
            driver = dr_input
        else:
            raise GDALException('Unrecognized input type for GDAL/OGR Driver: %s' % str(type(dr_input)))

        # Making sure we get a valid pointer to the OGR Driver
        if not driver:
            raise GDALException('Could not initialize GDAL/OGR Driver on input: %s' % str(dr_input))
        self.ptr = driver

0 View Complete Implementation : envelope.py
Copyright MIT License
Author : bpgc-cte
    def __init__(self, *args):
        """
        The initialization function may take an OGREnvelope structure, 4-element
        tuple or list, or 4 individual arguments.
        """

        if len(args) == 1:
            if isinstance(args[0], OGREnvelope):
                # OGREnvelope (a ctypes Structure) was pasted in.
                self._envelope = args[0]
            elif isinstance(args[0], (tuple, list)):
                # A tuple was pasted in.
                if len(args[0]) != 4:
                    raise GDALException('Incorrect number of tuple elements (%d).' % len(args[0]))
                else:
                    self._from_sequence(args[0])
            else:
                raise TypeError('Incorrect type of argument: %s' % str(type(args[0])))
        elif len(args) == 4:
            # Individual parameters pasted in.
            #  Thanks to ww for the help
            self._from_sequence([float(a) for a in args])
        else:
            raise GDALException('Incorrect number (%d) of arguments.' % len(args))

        # Checking the x,y coordinates
        if self.min_x > self.max_x:
            raise GDALException('Envelope minimum X > maximum X.')
        if self.min_y > self.max_y:
            raise GDALException('Envelope minimum Y > maximum Y.')

0 View Complete Implementation : envelope.py
Copyright MIT License
Author : bpgc-cte
    def expand_to_include(self, *args):
        """
        Modifies the envelope to expand to include the boundaries of
        the pasted-in 2-tuple (a point), 4-tuple (an extent) or
        envelope.
        """
        # We provide a number of different signatures for this method,
        # and the logic here is all about converting them into a
        # 4-tuple single parameter which does the actual work of
        # expanding the envelope.
        if len(args) == 1:
            if isinstance(args[0], Envelope):
                return self.expand_to_include(args[0].tuple)
            elif hasattr(args[0], 'x') and hasattr(args[0], 'y'):
                return self.expand_to_include(args[0].x, args[0].y, args[0].x, args[0].y)
            elif isinstance(args[0], (tuple, list)):
                # A tuple was pasted in.
                if len(args[0]) == 2:
                    return self.expand_to_include((args[0][0], args[0][1], args[0][0], args[0][1]))
                elif len(args[0]) == 4:
                    (minx, miny, maxx, maxy) = args[0]
                    if minx < self._envelope.MinX:
                        self._envelope.MinX = minx
                    if miny < self._envelope.MinY:
                        self._envelope.MinY = miny
                    if maxx > self._envelope.MaxX:
                        self._envelope.MaxX = maxx
                    if maxy > self._envelope.MaxY:
                        self._envelope.MaxY = maxy
                else:
                    raise GDALException('Incorrect number of tuple elements (%d).' % len(args[0]))
            else:
                raise TypeError('Incorrect type of argument: %s' % str(type(args[0])))
        elif len(args) == 2:
            # An x and an y parameter were pasted in
                return self.expand_to_include((args[0], args[1], args[0], args[1]))
        elif len(args) == 4:
            # Individual parameters pasted in.
            return self.expand_to_include(args)
        else:
            raise GDALException('Incorrect number (%d) of arguments.' % len(args[0]))

0 View Complete Implementation : field.py
Copyright MIT License
Author : bpgc-cte
    def __init__(self, feat, index):
        """
        Initializes on the feature object and the integer index of
        the field within the feature.
        """
        # Setting the feature pointer and index.
        self._feat = feat
        self._index = index

        # Getting the pointer for this field.
        fld_ptr = capi.get_feat_field_defn(feat.ptr, index)
        if not fld_ptr:
            raise GDALException('Cannot create OGR Field, invalid pointer given.')
        self.ptr = fld_ptr

        # Setting the clast depending upon the OGR Field Type (OFT)
        self.__clast__ = OGRFieldTypes[self.type]

        # OFTReal with no precision should be an OFTInteger.
        if isinstance(self, OFTReal) and self.precision == 0:
            self.__clast__ = OFTInteger
            self._double = True

0 View Complete Implementation : geometries.py
Copyright MIT License
Author : bpgc-cte
    def __init__(self, geom_input, srs=None):
        "Initializes Geometry on either WKT or an OGR pointer as input."

        str_instance = isinstance(geom_input, six.string_types)

        # If HEX, unpack input to a binary buffer.
        if str_instance and hex_regex.match(geom_input):
            geom_input = six.memoryview(a2b_hex(geom_input.upper().encode()))
            str_instance = False

        # Constructing the geometry,
        if str_instance:
            wkt_m = wkt_regex.match(geom_input)
            json_m = json_regex.match(geom_input)
            if wkt_m:
                if wkt_m.group('srid'):
                    # If there's EWKT, set the SRS w/value of the SRID.
                    srs = int(wkt_m.group('srid'))
                if wkt_m.group('type').upper() == 'LINEARRING':
                    # OGR_G_CreateFromWkt doesn't work with LINEARRING WKT.
                    #  See http://trac.osgeo.org/gdal/ticket/1992.
                    g = capi.create_geom(OGRGeomType(wkt_m.group('type')).num)
                    capi.import_wkt(g, byref(c_char_p(wkt_m.group('wkt').encode())))
                else:
                    g = capi.from_wkt(byref(c_char_p(wkt_m.group('wkt').encode())), None, byref(c_void_p()))
            elif json_m:
                g = capi.from_json(geom_input.encode())
            else:
                # Seeing if the input is a valid short-hand string
                # (e.g., 'Point', 'POLYGON').
                OGRGeomType(geom_input)
                g = capi.create_geom(OGRGeomType(geom_input).num)
        elif isinstance(geom_input, six.memoryview):
            # WKB was pasted in
            g = self._from_wkb(geom_input)
        elif isinstance(geom_input, OGRGeomType):
            # OGRGeomType was pasted in, an empty geometry will be created.
            g = capi.create_geom(geom_input.num)
        elif isinstance(geom_input, self.ptr_type):
            # OGR pointer (c_void_p) was the input.
            g = geom_input
        else:
            raise GDALException('Invalid input type for OGR Geometry construction: %s' % type(geom_input))

        # Now checking the Geometry pointer before finishing initialization
        # by setting the pointer for the object.
        if not g:
            raise GDALException('Cannot create OGR Geometry from input: %s' % str(geom_input))
        self.ptr = g

        # astigning the SpatialReference object to the geometry, if valid.
        if srs:
            self.srs = srs

        # Setting the clast depending upon the OGR Geometry Type
        self.__clast__ = GEO_CLastES[self.geom_type.num]

0 View Complete Implementation : geomtype.py
Copyright MIT License
Author : bpgc-cte
    def __init__(self, type_input):
        "Figures out the correct OGR Type based upon the input."
        if isinstance(type_input, OGRGeomType):
            num = type_input.num
        elif isinstance(type_input, six.string_types):
            type_input = type_input.lower()
            if type_input == 'geometry':
                type_input = 'unknown'
            num = self._str_types.get(type_input)
            if num is None:
                raise GDALException('Invalid OGR String Type "%s"' % type_input)
        elif isinstance(type_input, int):
            if type_input not in self._types:
                raise GDALException('Invalid OGR Integer Type: %d' % type_input)
            num = type_input
        else:
            raise TypeError('Invalid OGR input type given.')

        # Setting the OGR geometry type number.
        self.num = num

0 View Complete Implementation : band.py
Copyright MIT License
Author : bpgc-cte
    def __gesatem__(self, index):
        try:
            return GDALBand(self.source, index + 1)
        except GDALException:
            raise GDALException('Unable to get band index %d' % index)

0 View Complete Implementation : source.py
Copyright MIT License
Author : bpgc-cte
    def __init__(self, ds_input, write=False):
        self._write = 1 if write else 0
        Driver.ensure_registered()

        # Preprocess json inputs. This converts json strings to dictionaries,
        # which are parsed below the same way as direct dictionary inputs.
        if isinstance(ds_input, six.string_types) and json_regex.match(ds_input):
            ds_input = json.loads(ds_input)

        # If input is a valid file path, try setting file as source.
        if isinstance(ds_input, six.string_types):
            if not os.path.exists(ds_input):
                raise GDALException('Unable to read raster source input "{}"'.format(ds_input))
            try:
                # GDALOpen will auto-detect the data source type.
                self._ptr = capi.open_ds(force_bytes(ds_input), self._write)
            except GDALException as err:
                raise GDALException('Could not open the datasource at "{}" ({}).'.format(ds_input, err))
        elif isinstance(ds_input, dict):
            # A new raster needs to be created in write mode
            self._write = 1

            # Create driver (in memory by default)
            driver = Driver(ds_input.get('driver', 'MEM'))

            # For out of memory drivers, check filename argument
            if driver.name != 'MEM' and 'name' not in ds_input:
                raise GDALException('Specify name for creation of raster with driver "{}".'.format(driver.name))

            # Check if width and height where specified
            if 'width' not in ds_input or 'height' not in ds_input:
                raise GDALException('Specify width and height attributes for JSON or dict input.')

            # Check if srid was specified
            if 'srid' not in ds_input:
                raise GDALException('Specify srid for JSON or dict input.')

            # Create GDAL Raster
            self._ptr = capi.create_ds(
                driver._ptr,
                force_bytes(ds_input.get('name', '')),
                ds_input['width'],
                ds_input['height'],
                ds_input.get('nr_of_bands', len(ds_input.get('bands', []))),
                ds_input.get('datatype', 6),
                None
            )

            # Set band data if provided
            for i, band_input in enumerate(ds_input.get('bands', [])):
                band = self.bands[i]
                if 'nodata_value' in band_input:
                    band.nodata_value = band_input['nodata_value']
                    # Instantiate band filled with nodata values if only
                    # partial input data has been provided.
                    if band.nodata_value is not None and (
                            'data' not in band_input or
                            'size' in band_input or
                            'shape' in band_input):
                        band.data(data=(band.nodata_value,), shape=(1, 1))
                # Set band data values from input.
                band.data(
                    data=band_input.get('data'),
                    size=band_input.get('size'),
                    shape=band_input.get('shape'),
                    offset=band_input.get('offset'),
                )

            # Set SRID
            self.srs = ds_input.get('srid')

            # Set additional properties if provided
            if 'origin' in ds_input:
                self.origin.x, self.origin.y = ds_input['origin']

            if 'scale' in ds_input:
                self.scale.x, self.scale.y = ds_input['scale']

            if 'skew' in ds_input:
                self.skew.x, self.skew.y = ds_input['skew']
        elif isinstance(ds_input, c_void_p):
            # Instantiate the object using an existing pointer to a gdal raster.
            self._ptr = ds_input
        else:
            raise GDALException('Invalid data source input type: "{}".'.format(type(ds_input)))

0 View Complete Implementation : driver.py
Copyright Apache License 2.0
Author : drexly
    def __init__(self, dr_input):
        """
        Initializes an GDAL/OGR driver on either a string or integer input.
        """
        if isinstance(dr_input, six.string_types):
            # If a string name of the driver was pasted in
            self.ensure_registered()

            # Checking the alias dictionary (case-insensitive) to see if an
            # alias exists for the given driver.
            if dr_input.lower() in self._alias:
                name = self._alias[dr_input.lower()]
            else:
                name = dr_input

            # Attempting to get the GDAL/OGR driver by the string name.
            for iface in (vcapi, rcapi):
                driver = iface.get_driver_by_name(force_bytes(name))
                if driver:
                    break
        elif isinstance(dr_input, int):
            self.ensure_registered()
            for iface in (vcapi, rcapi):
                driver = iface.get_driver(dr_input)
                if driver:
                    break
        elif isinstance(dr_input, c_void_p):
            driver = dr_input
        else:
            raise GDALException('Unrecognized input type for GDAL/OGR Driver: %s' % str(type(dr_input)))

        # Making sure we get a valid pointer to the OGR Driver
        if not driver:
            raise GDALException('Could not initialize GDAL/OGR Driver on input: %s' % str(dr_input))
        self.ptr = driver

0 View Complete Implementation : geometries.py
Copyright Apache License 2.0
Author : drexly
    def __init__(self, geom_input, srs=None):
        "Initializes Geometry on either WKT or an OGR pointer as input."

        str_instance = isinstance(geom_input, six.string_types)

        # If HEX, unpack input to a binary buffer.
        if str_instance and hex_regex.match(geom_input):
            geom_input = six.memoryview(a2b_hex(geom_input.upper().encode()))
            str_instance = False

        # Constructing the geometry,
        if str_instance:
            wkt_m = wkt_regex.match(geom_input)
            json_m = json_regex.match(geom_input)
            if wkt_m:
                if wkt_m.group('srid'):
                    # If there's EWKT, set the SRS w/value of the SRID.
                    srs = int(wkt_m.group('srid'))
                if wkt_m.group('type').upper() == 'LINEARRING':
                    # OGR_G_CreateFromWkt doesn't work with LINEARRING WKT.
                    #  See http://trac.osgeo.org/gdal/ticket/1992.
                    g = capi.create_geom(OGRGeomType(wkt_m.group('type')).num)
                    capi.import_wkt(g, byref(c_char_p(wkt_m.group('wkt').encode())))
                else:
                    g = capi.from_wkt(byref(c_char_p(wkt_m.group('wkt').encode())), None, byref(c_void_p()))
            elif json_m:
                g = capi.from_json(geom_input.encode())
            else:
                # Seeing if the input is a valid short-hand string
                # (e.g., 'Point', 'POLYGON').
                OGRGeomType(geom_input)
                g = capi.create_geom(OGRGeomType(geom_input).num)
        elif isinstance(geom_input, six.memoryview):
            # WKB was pasted in
            g = capi.from_wkb(bytes(geom_input), None, byref(c_void_p()), len(geom_input))
        elif isinstance(geom_input, OGRGeomType):
            # OGRGeomType was pasted in, an empty geometry will be created.
            g = capi.create_geom(geom_input.num)
        elif isinstance(geom_input, self.ptr_type):
            # OGR pointer (c_void_p) was the input.
            g = geom_input
        else:
            raise GDALException('Invalid input type for OGR Geometry construction: %s' % type(geom_input))

        # Now checking the Geometry pointer before finishing initialization
        # by setting the pointer for the object.
        if not g:
            raise GDALException('Cannot create OGR Geometry from input: %s' % str(geom_input))
        self.ptr = g

        # astigning the SpatialReference object to the geometry, if valid.
        if srs:
            self.srs = srs

        # Setting the clast depending upon the OGR Geometry Type
        self.__clast__ = GEO_CLastES[self.geom_type.num]

0 View Complete Implementation : source.py
Copyright Apache License 2.0
Author : drexly
    def __init__(self, ds_input, write=False):
        self._write = 1 if write else 0
        Driver.ensure_registered()

        # Preprocess json inputs. This converts json strings to dictionaries,
        # which are parsed below the same way as direct dictionary inputs.
        if isinstance(ds_input, six.string_types) and json_regex.match(ds_input):
            ds_input = json.loads(ds_input)

        # If input is a valid file path, try setting file as source.
        if isinstance(ds_input, six.string_types):
            if not os.path.exists(ds_input):
                raise GDALException('Unable to read raster source input "{}"'.format(ds_input))
            try:
                # GDALOpen will auto-detect the data source type.
                self._ptr = capi.open_ds(force_bytes(ds_input), self._write)
            except GDALException as err:
                raise GDALException('Could not open the datasource at "{}" ({}).'.format(ds_input, err))
        elif isinstance(ds_input, dict):
            # A new raster needs to be created in write mode
            self._write = 1

            # Create driver (in memory by default)
            driver = Driver(ds_input.get('driver', 'MEM'))

            # For out of memory drivers, check filename argument
            if driver.name != 'MEM' and 'name' not in ds_input:
                raise GDALException('Specify name for creation of raster with driver "{}".'.format(driver.name))

            # Check if width and height where specified
            if 'width' not in ds_input or 'height' not in ds_input:
                raise GDALException('Specify width and height attributes for JSON or dict input.')

            # Check if srid was specified
            if 'srid' not in ds_input:
                raise GDALException('Specify srid for JSON or dict input.')

            # Create GDAL Raster
            self._ptr = capi.create_ds(
                driver._ptr,
                force_bytes(ds_input.get('name', '')),
                ds_input['width'],
                ds_input['height'],
                ds_input.get('nr_of_bands', len(ds_input.get('bands', []))),
                ds_input.get('datatype', 6),
                None
            )

            # Set band data if provided
            for i, band_input in enumerate(ds_input.get('bands', [])):
                band = self.bands[i]
                band.data(band_input['data'])
                if 'nodata_value' in band_input:
                    band.nodata_value = band_input['nodata_value']

            # Set SRID
            self.srs = ds_input.get('srid')

            # Set additional properties if provided
            if 'origin' in ds_input:
                self.origin.x, self.origin.y = ds_input['origin']

            if 'scale' in ds_input:
                self.scale.x, self.scale.y = ds_input['scale']

            if 'skew' in ds_input:
                self.skew.x, self.skew.y = ds_input['skew']
        elif isinstance(ds_input, c_void_p):
            # Instantiate the object using an existing pointer to a gdal raster.
            self._ptr = ds_input
        else:
            raise GDALException('Invalid data source input type: "{}".'.format(type(ds_input)))

0 View Complete Implementation : datasource.py
Copyright MIT License
Author : rizwansoaib
    def __init__(self, ds_input, ds_driver=False, write=False, encoding='utf-8'):
        # The write flag.
        if write:
            self._write = 1
        else:
            self._write = 0
        # See also https://trac.osgeo.org/gdal/wiki/rfc23_ogr_unicode
        self.encoding = encoding

        Driver.ensure_registered()

        if isinstance(ds_input, str):
            # The data source driver is a void pointer.
            ds_driver = Driver.ptr_type()
            try:
                # OGROpen will auto-detect the data source type.
                ds = capi.open_ds(force_bytes(ds_input), self._write, byref(ds_driver))
            except GDALException:
                # Making the error message more clear rather than something
                # like "Invalid pointer returned from OGROpen".
                raise GDALException('Could not open the datasource at "%s"' % ds_input)
        elif isinstance(ds_input, self.ptr_type) and isinstance(ds_driver, Driver.ptr_type):
            ds = ds_input
        else:
            raise GDALException('Invalid data source input type: %s' % type(ds_input))

        if ds:
            self.ptr = ds
            self.driver = Driver(ds_driver)
        else:
            # Raise an exception if the returned pointer is NULL
            raise GDALException('Invalid data source file "%s"' % ds_input)

0 View Complete Implementation : driver.py
Copyright MIT License
Author : rizwansoaib
    def __init__(self, dr_input):
        """
        Initialize an GDAL/OGR driver on either a string or integer input.
        """
        if isinstance(dr_input, str):
            # If a string name of the driver was pasted in
            self.ensure_registered()

            # Checking the alias dictionary (case-insensitive) to see if an
            # alias exists for the given driver.
            if dr_input.lower() in self._alias:
                name = self._alias[dr_input.lower()]
            else:
                name = dr_input

            # Attempting to get the GDAL/OGR driver by the string name.
            for iface in (vcapi, rcapi):
                driver = c_void_p(iface.get_driver_by_name(force_bytes(name)))
                if driver:
                    break
        elif isinstance(dr_input, int):
            self.ensure_registered()
            for iface in (vcapi, rcapi):
                driver = iface.get_driver(dr_input)
                if driver:
                    break
        elif isinstance(dr_input, c_void_p):
            driver = dr_input
        else:
            raise GDALException('Unrecognized input type for GDAL/OGR Driver: %s' % type(dr_input))

        # Making sure we get a valid pointer to the OGR Driver
        if not driver:
            raise GDALException('Could not initialize GDAL/OGR Driver on input: %s' % dr_input)
        self.ptr = driver

0 View Complete Implementation : envelope.py
Copyright MIT License
Author : rizwansoaib
    def __init__(self, *args):
        """
        The initialization function may take an OGREnvelope structure, 4-element
        tuple or list, or 4 individual arguments.
        """

        if len(args) == 1:
            if isinstance(args[0], OGREnvelope):
                # OGREnvelope (a ctypes Structure) was pasted in.
                self._envelope = args[0]
            elif isinstance(args[0], (tuple, list)):
                # A tuple was pasted in.
                if len(args[0]) != 4:
                    raise GDALException('Incorrect number of tuple elements (%d).' % len(args[0]))
                else:
                    self._from_sequence(args[0])
            else:
                raise TypeError('Incorrect type of argument: %s' % type(args[0]))
        elif len(args) == 4:
            # Individual parameters pasted in.
            #  Thanks to ww for the help
            self._from_sequence([float(a) for a in args])
        else:
            raise GDALException('Incorrect number (%d) of arguments.' % len(args))

        # Checking the x,y coordinates
        if self.min_x > self.max_x:
            raise GDALException('Envelope minimum X > maximum X.')
        if self.min_y > self.max_y:
            raise GDALException('Envelope minimum Y > maximum Y.')

0 View Complete Implementation : envelope.py
Copyright MIT License
Author : rizwansoaib
    def expand_to_include(self, *args):
        """
        Modify the envelope to expand to include the boundaries of
        the pasted-in 2-tuple (a point), 4-tuple (an extent) or
        envelope.
        """
        # We provide a number of different signatures for this method,
        # and the logic here is all about converting them into a
        # 4-tuple single parameter which does the actual work of
        # expanding the envelope.
        if len(args) == 1:
            if isinstance(args[0], Envelope):
                return self.expand_to_include(args[0].tuple)
            elif hasattr(args[0], 'x') and hasattr(args[0], 'y'):
                return self.expand_to_include(args[0].x, args[0].y, args[0].x, args[0].y)
            elif isinstance(args[0], (tuple, list)):
                # A tuple was pasted in.
                if len(args[0]) == 2:
                    return self.expand_to_include((args[0][0], args[0][1], args[0][0], args[0][1]))
                elif len(args[0]) == 4:
                    (minx, miny, maxx, maxy) = args[0]
                    if minx < self._envelope.MinX:
                        self._envelope.MinX = minx
                    if miny < self._envelope.MinY:
                        self._envelope.MinY = miny
                    if maxx > self._envelope.MaxX:
                        self._envelope.MaxX = maxx
                    if maxy > self._envelope.MaxY:
                        self._envelope.MaxY = maxy
                else:
                    raise GDALException('Incorrect number of tuple elements (%d).' % len(args[0]))
            else:
                raise TypeError('Incorrect type of argument: %s' % type(args[0]))
        elif len(args) == 2:
            # An x and an y parameter were pasted in
            return self.expand_to_include((args[0], args[1], args[0], args[1]))
        elif len(args) == 4:
            # Individual parameters pasted in.
            return self.expand_to_include(args)
        else:
            raise GDALException('Incorrect number (%d) of arguments.' % len(args[0]))

0 View Complete Implementation : field.py
Copyright MIT License
Author : rizwansoaib
    def __init__(self, feat, index):
        """
        Initialize on the feature object and the integer index of
        the field within the feature.
        """
        # Setting the feature pointer and index.
        self._feat = feat
        self._index = index

        # Getting the pointer for this field.
        fld_ptr = capi.get_feat_field_defn(feat.ptr, index)
        if not fld_ptr:
            raise GDALException('Cannot create OGR Field, invalid pointer given.')
        self.ptr = fld_ptr

        # Setting the clast depending upon the OGR Field Type (OFT)
        self.__clast__ = OGRFieldTypes[self.type]

        # OFTReal with no precision should be an OFTInteger.
        if isinstance(self, OFTReal) and self.precision == 0:
            self.__clast__ = OFTInteger
            self._double = True

0 View Complete Implementation : geometries.py
Copyright MIT License
Author : rizwansoaib
    def __init__(self, geom_input, srs=None):
        """Initialize Geometry on either WKT or an OGR pointer as input."""
        str_instance = isinstance(geom_input, str)

        # If HEX, unpack input to a binary buffer.
        if str_instance and hex_regex.match(geom_input):
            geom_input = memoryview(bytes.fromhex(geom_input))
            str_instance = False

        # Constructing the geometry,
        if str_instance:
            wkt_m = wkt_regex.match(geom_input)
            json_m = json_regex.match(geom_input)
            if wkt_m:
                if wkt_m.group('srid'):
                    # If there's EWKT, set the SRS w/value of the SRID.
                    srs = int(wkt_m.group('srid'))
                if wkt_m.group('type').upper() == 'LINEARRING':
                    # OGR_G_CreateFromWkt doesn't work with LINEARRING WKT.
                    #  See https://trac.osgeo.org/gdal/ticket/1992.
                    g = capi.create_geom(OGRGeomType(wkt_m.group('type')).num)
                    capi.import_wkt(g, byref(c_char_p(wkt_m.group('wkt').encode())))
                else:
                    g = capi.from_wkt(byref(c_char_p(wkt_m.group('wkt').encode())), None, byref(c_void_p()))
            elif json_m:
                g = self._from_json(geom_input.encode())
            else:
                # Seeing if the input is a valid short-hand string
                # (e.g., 'Point', 'POLYGON').
                OGRGeomType(geom_input)
                g = capi.create_geom(OGRGeomType(geom_input).num)
        elif isinstance(geom_input, memoryview):
            # WKB was pasted in
            g = self._from_wkb(geom_input)
        elif isinstance(geom_input, OGRGeomType):
            # OGRGeomType was pasted in, an empty geometry will be created.
            g = capi.create_geom(geom_input.num)
        elif isinstance(geom_input, self.ptr_type):
            # OGR pointer (c_void_p) was the input.
            g = geom_input
        else:
            raise GDALException('Invalid input type for OGR Geometry construction: %s' % type(geom_input))

        # Now checking the Geometry pointer before finishing initialization
        # by setting the pointer for the object.
        if not g:
            raise GDALException('Cannot create OGR Geometry from input: %s' % geom_input)
        self.ptr = g

        # astigning the SpatialReference object to the geometry, if valid.
        if srs:
            self.srs = srs

        # Setting the clast depending upon the OGR Geometry Type
        self.__clast__ = GEO_CLastES[self.geom_type.num]

0 View Complete Implementation : geomtype.py
Copyright MIT License
Author : rizwansoaib
    def __init__(self, type_input):
        "Figure out the correct OGR Type based upon the input."
        if isinstance(type_input, OGRGeomType):
            num = type_input.num
        elif isinstance(type_input, str):
            type_input = type_input.lower()
            if type_input == 'geometry':
                type_input = 'unknown'
            num = self._str_types.get(type_input)
            if num is None:
                raise GDALException('Invalid OGR String Type "%s"' % type_input)
        elif isinstance(type_input, int):
            if type_input not in self._types:
                raise GDALException('Invalid OGR Integer Type: %d' % type_input)
            num = type_input
        else:
            raise TypeError('Invalid OGR input type given.')

        # Setting the OGR geometry type number.
        self.num = num

0 View Complete Implementation : source.py
Copyright MIT License
Author : rizwansoaib
    def __init__(self, ds_input, write=False):
        self._write = 1 if write else 0
        Driver.ensure_registered()

        # Preprocess json inputs. This converts json strings to dictionaries,
        # which are parsed below the same way as direct dictionary inputs.
        if isinstance(ds_input, str) and json_regex.match(ds_input):
            ds_input = json.loads(ds_input)

        # If input is a valid file path, try setting file as source.
        if isinstance(ds_input, str):
            try:
                # GDALOpen will auto-detect the data source type.
                self._ptr = capi.open_ds(force_bytes(ds_input), self._write)
            except GDALException as err:
                raise GDALException('Could not open the datasource at "{}" ({}).'.format(ds_input, err))
        elif isinstance(ds_input, bytes):
            # Create a new raster in write mode.
            self._write = 1
            # Get size of buffer.
            size = sys.getsizeof(ds_input)
            # Past data to ctypes, keeping a reference to the ctypes object so
            # that the vsimem file remains available until the GDALRaster is
            # deleted.
            self._ds_input = c_buffer(ds_input)
            # Create random name to reference in vsimem filesystem.
            vsi_path = os.path.join(VSI_FILESYSTEM_BASE_PATH, str(uuid.uuid4()))
            # Create vsimem file from buffer.
            capi.create_vsi_file_from_mem_buffer(
                force_bytes(vsi_path),
                byref(self._ds_input),
                size,
                VSI_TAKE_BUFFER_OWNERSHIP,
            )
            # Open the new vsimem file as a GDALRaster.
            try:
                self._ptr = capi.open_ds(force_bytes(vsi_path), self._write)
            except GDALException:
                # Remove the broken file from the VSI filesystem.
                capi.unlink_vsi_file(force_bytes(vsi_path))
                raise GDALException('Failed creating VSI raster from the input buffer.')
        elif isinstance(ds_input, dict):
            # A new raster needs to be created in write mode
            self._write = 1

            # Create driver (in memory by default)
            driver = Driver(ds_input.get('driver', 'MEM'))

            # For out of memory drivers, check filename argument
            if driver.name != 'MEM' and 'name' not in ds_input:
                raise GDALException('Specify name for creation of raster with driver "{}".'.format(driver.name))

            # Check if width and height where specified
            if 'width' not in ds_input or 'height' not in ds_input:
                raise GDALException('Specify width and height attributes for JSON or dict input.')

            # Check if srid was specified
            if 'srid' not in ds_input:
                raise GDALException('Specify srid for JSON or dict input.')

            # Create null terminated gdal options array.
            papsz_options = []
            for key, val in ds_input.get('papsz_options', {}).items():
                option = '{}={}'.format(key, val)
                papsz_options.append(option.upper().encode())
            papsz_options.append(None)

            # Convert papszlist to ctypes array.
            papsz_options = (c_char_p * len(papsz_options))(*papsz_options)

            # Create GDAL Raster
            self._ptr = capi.create_ds(
                driver._ptr,
                force_bytes(ds_input.get('name', '')),
                ds_input['width'],
                ds_input['height'],
                ds_input.get('nr_of_bands', len(ds_input.get('bands', []))),
                ds_input.get('datatype', 6),
                byref(papsz_options),
            )

            # Set band data if provided
            for i, band_input in enumerate(ds_input.get('bands', [])):
                band = self.bands[i]
                if 'nodata_value' in band_input:
                    band.nodata_value = band_input['nodata_value']
                    # Instantiate band filled with nodata values if only
                    # partial input data has been provided.
                    if band.nodata_value is not None and (
                            'data' not in band_input or
                            'size' in band_input or
                            'shape' in band_input):
                        band.data(data=(band.nodata_value,), shape=(1, 1))
                # Set band data values from input.
                band.data(
                    data=band_input.get('data'),
                    size=band_input.get('size'),
                    shape=band_input.get('shape'),
                    offset=band_input.get('offset'),
                )

            # Set SRID
            self.srs = ds_input.get('srid')

            # Set additional properties if provided
            if 'origin' in ds_input:
                self.origin.x, self.origin.y = ds_input['origin']

            if 'scale' in ds_input:
                self.scale.x, self.scale.y = ds_input['scale']

            if 'skew' in ds_input:
                self.skew.x, self.skew.y = ds_input['skew']
        elif isinstance(ds_input, c_void_p):
            # Instantiate the object using an existing pointer to a gdal raster.
            self._ptr = ds_input
        else:
            raise GDALException('Invalid data source input type: "{}".'.format(type(ds_input)))