wradlib.zonalstats.ZonalDataPoly

class wradlib.zonalstats.ZonalDataPoly(src, *, trg=None, buf=0.0, crs=None, **kwargs)

ZonalData object for source polygons

Parameters:

• src (sequence or str) – sequence of source polygons (shape NxMx2) or ESRI Shapefile filename containing source polygons

• trg (sequence or str) – sequence of target polygons (shape Nx2, num vertices x 2) or ESRI Shapefile filename containing target polygons

Keyword Arguments:

• buf (float) – (same unit as coordinates) Polygons will be considered inside the target if they are contained in the buffer.

• crs –

  Coordinate Reference System (CRS) of src and trg data. Can be one of:

  • A pyproj.crs.CoordinateSystem instance

  • A cartopy.crs.CRS instance

  • A osgeo.osr.SpatialReference instance

  • A type accepted by pyproj.crs.CRS.from_user_input (e.g., EPSG code, PROJ string, dictionary, WKT, or any object with a to_wkt() method)

  src and trg data have to be in the same crs-format

Examples

See ZonalData.

dump_vector(filename, *[, driver, remove])	Output source/target grid points/polygons to ESRI_Shapefile
get_isec(idx)	Returns intersections
get_source_index(idx)	Returns source indices referring to target polygon idx
load_vector(filename)	Load source/target grid points/polygons into in-memory Shapefile

count_intersections	Returns number of intersections
crs	Returns SpatialReferenceSystem object
isecs	Returns intersections