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GRASS 7 Python script for configuring polygon shapefile attributes using SIGUA schema
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#!/usr/bin/env python | |
#%module | |
#% description: configure attributes using SIGUA schema | |
#%end | |
#%option | |
#% key: input | |
#% type: string | |
#% description: Input building floor polygon shapefile | |
#% required: yes | |
#%end | |
#%option | |
#% key: epsg | |
#% type: integer | |
#% description: EPSG id of input shapefile | |
#% required: yes | |
#%end | |
import sys | |
import os | |
import errno | |
from grass.script import core as g | |
class InputError(Exception): | |
def __init__(self, value): | |
self.value = value | |
super(InputError, self).__init__() | |
def __str__(self): | |
return repr(self.value) | |
def main(): | |
g.run_command("v.in.ogr", flags="o", input_=options["input"], | |
output="pol", overwrite=True) | |
report = g.parse_command("v.info", flags="t", map_="pol") | |
if report["areas"] == "0": | |
raise InputError("Input must be a polygon shapefile") | |
ignore_cols = g.parse_command("db.columns", table="pol") | |
for key in ignore_cols: | |
if key != "cat": | |
g.run_command("v.db.dropcolumn", map_="pol", column=key) | |
c1 = "codigo varchar(9)" | |
c2 = "coddpto varchar(25)" | |
c3 = "actividad int" | |
c4 = "denominaci varchar(100)" | |
c5 = "observacio varchar(100)" | |
schema = "{0},{1},{2},{3},{4}".format(c1, c2, c3, c4, c5) | |
g.run_command("v.db.addcolumn", map_="pol", columns=schema) | |
noext = os.path.splitext(options["input"])[0] | |
floor_id = os.path.basename(noext).upper() | |
g.run_command("db.execute", sql="update pol set codigo = '{0}000', actividad = 93, coddpto='07.018'".format(floor_id)) | |
try: | |
os.remove("{0}.shp".format(noext)) | |
os.remove("{0}.dbf".format(noext)) | |
os.remove("{0}.shx".format(noext)) | |
os.remove("{0}.prj".format(noext)) | |
except OSError as e: | |
if e.errno != errno.ENOENT: | |
raise | |
g.run_command("v.out.ogr", flags="cs", input_="pol", | |
format="ESRI_Shapefile", output=options["input"], type_="area") | |
wkt = g.read_command("g.proj", flags="wf", epsg=options["epsg"])[:-2] | |
wkt += ',AUTHORITY["{}","{}"]]' | |
wkt = wkt.format("EPSG", options["epsg"]) | |
with open("{0}.prj".format(noext), "w") as projfile: | |
projfile.write(wkt) | |
with open("{0}.cpg".format(noext), "w") as encodingfile: | |
encodingfile.write("UTF-8") | |
if __name__ == "__main__": | |
options, flags = g.parser() | |
sys.exit(main()) |
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