Python osgeo.ogr 模块，wkbLineString25D() 实例源码

def export_shp_breaklines(self, outshp):
        from osgeo import ogr

        # Now convert it to a shapefile with OGR
        driver = ogr.GetDriverByName('Esri Shapefile')
        ds = driver.CreateDataSource(outshp)
        layer = ds.CreateLayer('', None, ogr.wkbLineString25D)
        # Add one attribute
        layer.CreateField(ogr.FieldDefn('id', ogr.OFTInteger))
        fieldLineType = ogr.FieldDefn('LineType', ogr.OFTString)
        fieldLineType.SetWidth(4)
        layer.CreateField(fieldLineType)

        defn = layer.GetLayerDefn()

        ## If there are multiple geometries, put the "for" loop here
        for id, line in self.breaklines.iteritems():
            # Create a new feature (attribute and geometry)
            feat = ogr.Feature(defn)
            feat.SetField('id', int(id))
            feat.SetField('LineType', line['linetype'])

            # Make a geometry, from Shapely object
            geom = ogr.CreateGeometryFromWkb(line['geometry'].wkb)
            feat.SetGeometry(geom)

            layer.CreateFeature(feat)
            feat = geom = None  # destroy these

        # Save and close everything
        ds = layer = feat = geom = None

def DumpReadableGeometry( poGeometry, pszPrefix, options ):

    if pszPrefix == None:
        pszPrefix = ""

    if 'DISPLAY_GEOMETRY' in options and EQUAL(options['DISPLAY_GEOMETRY'], 'SUMMARY'):

        line = ("%s%s : " % (pszPrefix, poGeometry.GetGeometryName() ))
        eType = poGeometry.GetGeometryType()
        if eType == ogr.wkbLineString or eType == ogr.wkbLineString25D:
            line = line + ("%d points" % poGeometry.GetPointCount())
            print(line)
        elif eType == ogr.wkbPolygon or eType == ogr.wkbPolygon25D:
            nRings = poGeometry.GetGeometryCount()
            if nRings == 0:
                line = line + "empty"
            else:
                poRing = poGeometry.GetGeometryRef(0)
                line = line + ("%d points" % poRing.GetPointCount())
                if nRings > 1:
                    line = line + (", %d inner rings (" % (nRings - 1))
                    for ir in range(0,nRings-1):
                        if ir > 0:
                            line = line + ", "
                        poRing = poGeometry.GetGeometryRef(ir+1)
                        line = line + ("%d points" % poRing.GetPointCount())
                    line = line + ")"
            print(line)

        elif eType == ogr.wkbMultiPoint or \
            eType == ogr.wkbMultiPoint25D or \
            eType == ogr.wkbMultiLineString or \
            eType == ogr.wkbMultiLineString25D or \
            eType == ogr.wkbMultiPolygon or \
            eType == ogr.wkbMultiPolygon25D or \
            eType == ogr.wkbGeometryCollection or \
            eType == ogr.wkbGeometryCollection25D:

                line = line + "%d geometries:" % poGeometry.GetGeometryCount()
                print(line)
                for ig in range(poGeometry.GetGeometryCount()):
                    subgeom = poGeometry.GetGeometryRef(ig)
                    from sys import version_info
                    if version_info >= (3,0,0):
                        exec('print("", end=" ")')
                    else:
                        exec('print "", ')
                    DumpReadableGeometry( subgeom, pszPrefix, options)
        else:
            print(line)

    elif 'DISPLAY_GEOMETRY' not in options or EQUAL(options['DISPLAY_GEOMETRY'], 'yes') \
            or EQUAL(options['DISPLAY_GEOMETRY'], 'WKT'):

        print("%s%s" % (pszPrefix, poGeometry.ExportToWkt() ))

    return