Geografic-Information-System/temporal/t.rast.mapcalc/t.rast.mapcalc.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
############################################################################
#
# MODULE:	t.rast.mapcalc
# AUTHOR(S):	Soeren Gebbert
#
# PURPOSE:	Perform r.mapcalc expressions on maps of sampled space time raster datasets
# COPYRIGHT:	(C) 2012 by the GRASS Development Team
#
#		This program is free software under the GNU General Public
#		License (version 2). Read the file COPYING that comes with GRASS
#		for details.
#
#############################################################################

#%module
#% description: Performs r.mapcalc expressions on maps of sampled space time raster datasets.
#% keywords: temporal
#% keywords: mapcalc
#%end

#%option G_OPT_STRDS_INPUTS
#%end

#%option
#% key: expression
#% type: string
#% description: The r.mapcalc expression applied to each time step of the sampled data
#% required: yes
#% multiple: no
#%end

#%option G_OPT_T_SAMPLE
#% key: method
#% answer: during,overlap,contain,equal
#%end

#%option G_OPT_STRDS_OUTPUT
#%end

#%option G_OPT_R_BASE
#% required: yes
#%end

#%option
#% key: nprocs
#% type: integer
#% description: The number of r.mapcalc processes to run in parallel
#% required: no
#% multiple: no
#% answer: 1
#%end

#%flag
#% key: n
#% description: Register Null maps
#%end

#%flag
#% key: s
#% description: Check spatial overlap
#%end

from multiprocessing import Process
import copy
import grass.script as grass
import grass.temporal as tgis

############################################################################

def main():

    # Get the options
    inputs = options["inputs"]
    output = options["output"]
    expression = options["expression"]
    base = options["base"]
    method = options["method"]
    nprocs = int(options["nprocs"])
    register_null = flags["n"]
    spatial = flags["s"]
    
    # Create the method list
    method = method.split(",")
        
    # Make sure the temporal database exists
    tgis.create_temporal_database()
    
    tgis.dataset_mapcalculator(inputs, output, "raster", expression, base, method, nprocs, register_null, spatial)
    
###############################################################################

if __name__ == "__main__":
    options, flags = grass.parser()
    main()