projected Returns True if this spatial reference is a projected coordinate system (root node is PROJCS)

dimension Returns the number of coordinated dimensions of the geometry, i.e. 0 for points, 1 for lines, and so forth:

coord_dim Returns or sets the coordinate dimension of this geometry. For example, the value would be 2 for two-dimensional geometries

auth_name(target) Returns the authority name for the given string target node.

spatial_filter Property that may be used to retrieve or set a spatial filter for this layer. A spatial filter can only be set

linear_units Returns the value of the linear units.

srs Property that returns the SpatialReference associated with this layer:

extent Extent (boundary values) of the raster source, as a 4-tuple (xmin, ymin, xmax, ymax) in the spatial reference

wkt A string representing this envelope as a polygon in WKT format.

ur The upper-right coordinate, as a tuple.