1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
"""
***************************************************************************
r_null.py
---------------------
Date : February 2016
Copyright : (C) 2016 by Médéric Ribreux
Email : medspx at medspx dot fr
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""
__author__ = "Médéric Ribreux"
__date__ = "February 2016"
__copyright__ = "(C) 2016, Médéric Ribreux"
from qgis.PyQt.QtCore import QCoreApplication
def checkParameterValuesBeforeExecuting(alg, parameters, context):
"""Verify if we have the right parameters"""
if alg.parameterAsString(parameters, "setnull", context) or alg.parameterAsString(
parameters, "null", context
):
return True, None
return False, QCoreApplication.translate(
"GrassAlgorithmExt",
"You need to set at least 'setnull' or 'null' parameters for this algorithm!",
)
def processInputs(alg, parameters, context, feedback):
"""Prepare the GRASS import commands"""
if "map" in alg.exportedLayers:
return
# We need to import without r.external
alg.loadRasterLayerFromParameter("map", parameters, context, False)
alg.postInputs(context)
def processCommand(alg, parameters, context, feedback):
# We temporary remove the output 'sequence'
alg.processCommand(parameters, context, feedback, True)
def processOutputs(alg, parameters, context, feedback):
fileName = alg.parameterAsOutputLayer(parameters, "output", context)
grassName = alg.exportedLayers["map"]
alg.exportRasterLayer(grassName, fileName, False)
|
