width Returns the width of this field: >>>

json Returns a string representation of this geometry in JSON format:

import_proj(proj) Import spatial reference from PROJ.4 string.

import_wkt(wkt) Import spatial reference from WKT.

tuple A tuple representing the envelope.

value Returns the value of this field. The Field class itself returns the value as a string, but each subclass

class Layer Layer is a wrapper for a layer of data in a DataSource object. You never create a Layer

__len__() Returns the number of points in a LineString, the number of rings in a Polygon, or the number

geos Returns a

angular_units Returns the value of the angular units.