Python ogr.Geometry方法代碼示例

# 需要導入模塊: import ogr [as 別名]
# 或者: from ogr import Geometry [as 別名]
def create_temp_shape(self, name, point_list):
        vector_file = os.path.join(self.temp_dir.name, name)
        shape_driver = ogr.GetDriverByName("ESRI Shapefile")  # Depreciated; replace at some point
        vector_data_source = shape_driver.CreateDataSource(vector_file)
        vector_layer = vector_data_source.CreateLayer("geometry", self.srs, geom_type=ogr.wkbPolygon)
        ring = ogr.Geometry(ogr.wkbLinearRing)
        for point in point_list:
            ring.AddPoint(point[0], point[1])
        poly = ogr.Geometry(ogr.wkbPolygon)
        poly.AddGeometry(ring)
        vector_feature_definition = vector_layer.GetLayerDefn()
        vector_feature = ogr.Feature(vector_feature_definition)
        vector_feature.SetGeometry(poly)
        vector_layer.CreateFeature(vector_feature)
        vector_layer.CreateField(ogr.FieldDefn("class", ogr.OFTInteger))
        feature = ogr.Feature(vector_layer.GetLayerDefn())
        feature.SetField("class", 3)

        vector_data_source.FlushCache()
        self.vectors.append(vector_data_source)  # Check this is the right thing to be saving here
        self.vector_paths.append(vector_file) 

# 需要導入模塊: import ogr [as 別名]
# 或者: from ogr import Geometry [as 別名]
def test_write_polygon(managed_geotiff_dir):
    test_dir = managed_geotiff_dir
    ring = ogr.Geometry(ogr.wkbLinearRing)
    ring.AddPoint(1,1)
    ring.AddPoint(1,5)
    ring.AddPoint(5,1)
    ring.AddPoint(1,1)
    poly = ogr.Geometry(ogr.wkbPolygon)
    poly.AddGeometry(ring)
    result_path = os.path.join(test_dir.path, "test_poly")
    pyeo.write_polygon(poly, result_path)
    assert os.path.exists(result_path) 

# 需要導入模塊: import ogr [as 別名]
# 或者: from ogr import Geometry [as 別名]
def create_100x100_shp(self, name):
        """Cretes  a shapefile with a vector layer named "geometry" containing a 100mx100m square , top left corner
        being at wgs coords 10,10.
        This polygon has a field, 'class' with a value of 3. Left in for back-compatability"""
        # TODO Generalise this
        vector_file = os.path.join(self.temp_dir.name, name)
        shape_driver = ogr.GetDriverByName("ESRI Shapefile")  # Depreciated; replace at some point
        vector_data_source = shape_driver.CreateDataSource(vector_file)
        vector_layer = vector_data_source.CreateLayer("geometry", self.srs, geom_type=ogr.wkbPolygon)
        ring = ogr.Geometry(ogr.wkbLinearRing)
        ring.AddPoint(10.0, 10.0)
        ring.AddPoint(10.0, 110.0)
        ring.AddPoint(110.0, 110.0)
        ring.AddPoint(110.0, 10.0)
        ring.AddPoint(10.0, 10.0)
        poly = ogr.Geometry(ogr.wkbPolygon)
        poly.AddGeometry(ring)
        vector_feature_definition = vector_layer.GetLayerDefn()
        vector_feature = ogr.Feature(vector_feature_definition)
        vector_feature.SetGeometry(poly)
        vector_layer.CreateFeature(vector_feature)
        vector_layer.CreateField(ogr.FieldDefn("class", ogr.OFTInteger))
        feature = ogr.Feature(vector_layer.GetLayerDefn())
        feature.SetField("class", 3)

        vector_data_source.FlushCache()
        self.vectors.append(vector_data_source)  # Check this is the right thing to be saving here
        self.vector_paths.append(vector_file) 

# 需要導入模塊: import ogr [as 別名]
# 或者: from ogr import Geometry [as 別名]
def shp_to_wkt(shapefile, buffer=None, convex=False, envelope=False):
    '''A helper function to translate a shapefile into WKT


    '''

    # get filepaths and proj4 string
    shpfile = os.path.abspath(shapefile)
    prjfile = shpfile[:-4] + '.prj'
    proj4 = get_proj4(prjfile)

    lyr_name = os.path.basename(shapefile)[:-4]
    shp = ogr.Open(os.path.abspath(shapefile))
    lyr = shp.GetLayerByName(lyr_name)
    geom = ogr.Geometry(ogr.wkbGeometryCollection)

    for feat in lyr:
        geom.AddGeometry(feat.GetGeometryRef())
        wkt = geom.ExportToWkt()

    if proj4 != '+proj=longlat +datum=WGS84 +no_defs':
        print(' INFO: Reprojecting AOI file to Lat/Long (WGS84)')
        wkt = reproject_geometry(wkt, proj4, 4326).ExportToWkt()

    # do manipulations if needed
    wkt = wkt_manipulations(wkt, buffer=buffer, convex=convex,
                            envelope=envelope)

    return wkt 

# 需要導入模塊: import ogr [as 別名]
# 或者: from ogr import Geometry [as 別名]
def to_ogr_multi_type(self, geom, ogr_type):
        """
        Convert ogr geometry to multi-type when supplied the ogr.type.
        :param geom: The ogr geometry
        :type geom: OGRGeometry
        :param ogr_type: The ogr geometry type
        :type ogr_type: String
        :return: WkB geometry and the output layer geometry type.
        :rtype: Tuple
        """
        multi_geom = ogr.Geometry(ogr_type)
        multi_geom.AddGeometry(geom)
        geom_wkb = multi_geom.ExportToWkt()
        geom_type = multi_geom.GetGeometryName()
        return geom_wkb, geom_type