1#!/usr/local/bin/python3.8
2# -*- coding: utf-8 -*-
3############################################################################
4#
5# MODULE:       t.vect.algebra
6# AUTHOR(S):    Thomas Leppelt, Soeren Gebbert
7#
8# PURPOSE:      Provide temporal vector algebra to perform spatial and temporal operations
9#               for space time datasets by topological relationships to other space time
10#               datasets.
11# COPYRIGHT:    (C) 2014-2017 by the GRASS Development Team
12#
13#  This program is free software; you can redistribute it and/or modify
14#  it under the terms of the GNU General Public License as published by
15#  the Free Software Foundation; either version 2 of the License, or
16#  (at your option) any later version.
17#
18#  This program is distributed in the hope that it will be useful,
19#  but WITHOUT ANY WARRANTY; without even the implied warranty of
20#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21#  GNU General Public License for more details.
22#
23#############################################################################
24
25#%module
26#% description: Apply temporal and spatial operations on space time vector datasets using temporal vector algebra.
27#% keyword: temporal
28#% keyword: algebra
29#% keyword: vector
30#% keyword: time
31#%end
32
33#%option
34#% key: expression
35#% type: string
36#% description: Spatio-temporal mapcalc expression
37#% key_desc: expression
38#% required : yes
39#%end
40
41#%option
42#% key: basename
43#% type: string
44#% label: Basename of the new generated output maps
45#% description: A numerical suffix separated by an underscore will be attached to create a unique identifier
46#% key_desc: basename
47#% required : yes
48#%end
49
50#%flag
51#% key: s
52#% description: Check the spatial topology of temporally related maps and process only spatially related maps
53#%end
54
55import grass.script
56import sys
57
58def main():
59    # lazy imports
60    import grass.temporal as tgis
61
62    expression = options['expression']
63    basename = options['basename']
64    spatial = flags["s"]
65    stdstype = "stvds"
66
67    # Check for PLY istallation
68    try:
69        import ply.lex as lex
70        import ply.yacc as yacc
71    except:
72        grass.script.fatal(_("Please install PLY (Lex and Yacc Python implementation) to use the temporal algebra modules."))
73
74    tgis.init(True)
75    p = tgis.TemporalVectorAlgebraParser(run = True, debug=False, spatial = spatial)
76    p.parse(expression, basename, grass.script.overwrite())
77
78if __name__ == "__main__":
79    options, flags = grass.script.parser()
80    sys.exit(main())
81
82