/
soil_erosion_dockwidget.py
594 lines (506 loc) · 24.7 KB
/
soil_erosion_dockwidget.py
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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
# -*- coding: utf-8 -*-
"""
/***************************************************************************
SoilErosionDockWidget
A QGIS plugin
This plugin computes soil loss on arable land.
-------------------
begin : 2017-03-08
git sha : $Format:%H$
copyright : (C) 2017 by Radek Novotny
email : radeknovotny94@gmail.com
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
"""
import os
import tempfile
import shutil
from PyQt4.QtCore import QSettings, pyqtSignal, QLocale, QFileInfo, QVariant, QThread, Qt, QTranslator, QCoreApplication, qVersion
from PyQt4.QtGui import QFileDialog, QComboBox, QProgressBar, QToolButton, QMessageBox, QColor
from qgis.core import QgsProject, QgsProviderRegistry, QgsVectorLayer, QgsRasterLayer, QgsField, QgsMapLayerRegistry, QgsRasterBandStats, QgsColorRampShader, QgsRasterShader, QgsSingleBandPseudoColorRenderer, QgsSymbolV2, QgsRendererRangeV2, QgsGraduatedSymbolRendererV2, QgsRendererCategoryV2, QgsCategorizedSymbolRendererV2
from qgis.utils import iface
from qgis.gui import QgsMapLayerComboBox, QgsMapLayerProxyModel
from qgis.analysis import QgsZonalStatistics
# from qgis.analysis import QgsOverlayAnalyzer
from PyQt4 import QtGui, uic
from pyerosion.read_csv import ReadCSV
grassFound = False
try:
from pyerosion.erosionusle import ErosionUSLE
grassFound = True
except ImportError as e:
QMessageBox.critical(None, u'Soil Erosion Plugin', u"{}".format(e))
FORM_CLASS, _ = uic.loadUiType(os.path.join(
os.path.dirname(__file__), 'soil_erosion_dockwidget_base.ui'))
class SoilErosionDockWidget(QtGui.QDockWidget, FORM_CLASS):
closingPlugin = pyqtSignal()
def __init__(self, parent=None):
"""Constructor."""
super(SoilErosionDockWidget, self).__init__(parent)
# Set up the user interface from Designer.
# After setupUI you can access any designer object by doing
# self.<objectname>, and you can use autoconnect slots - see
# http://qt-project.org/doc/qt-4.8/designer-using-a-ui-file.html
# #widgets-and-dialogs-with-auto-connect
self.setupUi(self)
self.settings = QSettings("CTU", "Soil_Erosion_Plugin")
self.iface = iface
# Define first computation, no results in map window
self._first_computation = True
# Read code tables
self._factors = {}
self._readFactorCodes()
# Fill C combobox
self.combobox_c.clear()
list = self._factors['C'].list()
self.combobox_c.addItems(list)
# Set filters for QgsMapLayerComboBoxes
self.shp_box_euc.setFilters(QgsMapLayerProxyModel.PolygonLayer)
self.load_shp_euc.clicked.connect(self.onLoadShapefile)
self.raster_box.setFilters(QgsMapLayerProxyModel.RasterLayer)
self.load_raster.clicked.connect(self.onLoadRaster)
self.shp_box_bpej.setFilters(QgsMapLayerProxyModel.PolygonLayer)
self.load_shp_bpej.clicked.connect(self.onLoadShapefile)
self.shp_box_lpis.setFilters(QgsMapLayerProxyModel.PolygonLayer)
self.load_lpis.clicked.connect(self.onLoadShapefile)
# Set functions for buttons
self.compute_k_button.clicked.connect(self.onAddKFactor)
self.compute_c_button.clicked.connect(self.onAddCFactor)
self.set_button.clicked.connect(self.onCompute)
def closeEvent(self, event):
self.closingPlugin.emit()
event.accept()
def onLoadRaster(self):
"""Open 'Add raster layer dialog'."""
sender = '{}-lastUserFilePath'.format(self.sender().objectName())
lastUsedFilePath = self.settings.value(sender, '')
fileName = QFileDialog.getOpenFileName(self,self.tr(u'Open Raster'),
u'{}'.format(lastUsedFilePath),
QgsProviderRegistry.instance().fileRasterFilters())
if fileName:
self.iface.addRasterLayer(fileName, QFileInfo(fileName).baseName())
self.settings.setValue(sender, os.path.dirname(fileName))
def onLoadShapefile(self):
"""Open 'Add shapefile layer dialog'."""
sender = '{}-lastUserFilePath'.format(self.sender().objectName())
lastUsedFilePath = self.settings.value(sender, '')
fileName = QFileDialog.getOpenFileName(self,self.tr(u'Open Shapefile'),
u'{}'.format(lastUsedFilePath),
QgsProviderRegistry.instance().fileVectorFilters())
if fileName:
self.iface.addVectorLayer(fileName, QFileInfo(fileName).baseName(), "ogr")
self.settings.setValue(sender, os.path.dirname(fileName))
def onAddKFactor(self):
bpej_layer = self.shp_box_bpej.currentLayer()
bpej_error = self.tr(u'layer must contain field \'BPEJ\'(format:\'X.XX.XX\' or value \'99\' for NoData)')
try:
if bpej_layer is None:
self.showError(self.tr(u'You have to choose or load BPEJ layer.\n This ') + bpej_error)
return
elif bpej_layer.fieldNameIndex('BPEJ') == -1:
self.showError(self.tr(u'BPEJ ') + bpej_error)
return
else:
bpej_layer.startEditing()
self._addColumn(bpej_layer, 'K')
bpej_layer.commitChanges()
except:
bpej_layer.rollBack()
self.showError(self.tr(u'Error during add \'K\' field, please check BPEJ layer.'))
try:
bpej_layer.startEditing()
idx = bpej_layer.fieldNameIndex('BPEJ')
for feature in bpej_layer.getFeatures():
bpej = feature.attributes()[idx]
fid = feature.id()
if bpej == '99':
k_value = None
else:
k_value = self._factors['K'].value(bpej[2] + bpej[3])
self.setFieldValue(bpej_layer, 'K', k_value, fid)
bpej_layer.commitChanges()
self.setBpejStyle(bpej_layer)
self.iface.messageBar().pushMessage(self.tr('Soil Erosion Plugin'), self.tr('K factor is computed!'))
except:
bpej_layer.rollBack()
self.showError(self.tr(u'BPEJ ') + bpej_error)
return
def onAddCFactor(self):
lpis_layer = self.shp_box_lpis.currentLayer()
lpis_error = self.tr(u'layer must contain field \'KULTURAKOD\'\nwith allowed codes for land:\n R - Arable land\n' \
u' T - Permanent grassland\n S - Orchard\n L - Forest\n V - Vineyard\n C - Hop-garden\n' \
u'At least one feature must have code \'R\'!')
if lpis_layer is None:
self.showError(self.tr(u'You have to choose or load LPIS layer.\nThis ') + lpis_error)
return
elif lpis_layer.fieldNameIndex('KULTURAKOD') == -1:
self.showError(self.tr(u'LPIS ') + lpis_error)
return
else:
lpis_layer.startEditing()
self._addColumn(lpis_layer, 'C')
lpis_layer.commitChanges()
try:
self.setLpisStyle(lpis_layer)
lpis_layer.startEditing()
combobox_value = self.combobox_c.currentText()
idx = lpis_layer.fieldNameIndex('KULTURAKOD')
for feature in lpis_layer.getFeatures():
lpis = feature.attributes()[idx]
fid = feature.id()
if lpis == 'T':
c_value = 0.005
elif lpis == 'S':
c_value = 0.45
elif lpis == 'L':
c_value = 0.003
elif lpis == 'V':
c_value = 0.85
elif lpis == 'C':
c_value = 0.8
elif lpis == 'R':
c_value = self._factors['C'].value(combobox_value)
self.setFieldValue(lpis_layer, 'C', c_value, fid)
lpis_layer.commitChanges()
self.iface.messageBar().pushMessage(self.tr('Soil Erosion Plugin'), self.tr('C factor is computed!'))
except:
lpis_layer.rollBack()
self.showError(self.tr(u'LPIS ') + lpis_error)
return
def setFieldValue(self, euc_layer, field_name, value, fid=None):
index = euc_layer.dataProvider().fieldNameIndex(field_name)
if fid is None:
for feature in euc_layer.getFeatures():
fid = feature.id()
euc_layer.changeAttributeValue(fid, index, value)
else:
euc_layer.changeAttributeValue(fid, index, value)
def _readFactorCodes(self):
for fact in ('K','C'):
filename = os.path.join(os.path.dirname(__file__), 'code_tables', fact + '_factor.csv')
self._factors[fact] = ReadCSV(filename)
def _addColumn(self, layer, name):
for field in layer.pendingFields():
if field.name() == name:
return
# column does not exists
# TODO
# caps & QgsVectorDataProvider.AddAttributes):
layer.dataProvider().addAttributes(
[QgsField(name, QVariant.Double)]
)
# def onIntersectLayers(self):
# euc_layer = self.shp_box_euc.currentLayer()
# bpej_layer = self.shp_box_bpej.currentLayer()
# analyzer = QgsOverlayAnalyzer()
# analyzer.intersection(euc_layer, bpej_layer, os.path.join(os.path.dirname(__file__), 'intersect.shp'), False, None)
def onCompute(self):
if hasattr(self, "computeThread"):
return
# remove results from map window, if it is not first computation
if self._first_computation == False:
try:
QgsMapLayerRegistry.instance().removeMapLayer(self._se_layer.id())
for field in self._euc_vector.pendingFields():
if field.name() == 'G':
field_id = self._euc_vector.fieldNameIndex(field.name())
fList = list()
fList.append(field_id)
self._euc_vector.dataProvider().deleteAttributes(fList)
QgsMapLayerRegistry.instance().removeMapLayer(self._euc_vector.id())
except:
self.showError(self.tr(u'Error during deleting layers from previous computation.'))
return
# find input layers
euc_layer = self.shp_box_euc.currentLayer()
dmt_layer = self.raster_box.currentLayer()
bpej_layer = self.shp_box_bpej.currentLayer()
lpis_layer = self.shp_box_lpis.currentLayer()
# check fields
self._cancel = False
self.checkField('BPEJ', bpej_layer, 'K')
if self._cancel == True:
return
self.checkField('LPIS', lpis_layer, 'C')
if self._cancel == True:
return
# check crs of input layers
euc_crs = euc_layer.crs().authid()
dmt_crs = dmt_layer.crs().authid()
bpej_crs = bpej_layer.crs().authid()
lpis_crs = lpis_layer.crs().authid()
if euc_crs == dmt_crs == bpej_crs == lpis_crs:
if not int(euc_crs[5:]) >= 100000:
epsg = int(euc_crs[5:])
else:
self.showError(self.tr(u'It\'s not allow compute in own projection!\n\nSet CRS of'\
u' input layers: {}\n\nPlease change CRS of input layers to EPSG Code.').format(euc_crs))
return
else:
self.showError(self.tr(u'All inputs have to be at the same projection!\nEUC: {}\nDMT: {}\nBPEJ: {}\nLPIS: {}\n'\
u'Please set only one projections for all input layers.').format(euc_crs, dmt_crs, bpej_crs, lpis_crs))
return
# add paths to layers to data
data = []
euc_path = euc_layer.dataProvider().dataSourceUri()
data.append(euc_path[:euc_path.rfind('|')])
dmt_path = dmt_layer.dataProvider().dataSourceUri()
data.append(dmt_path)
bpej_path = bpej_layer.dataProvider().dataSourceUri()
data.append(bpej_path [:bpej_path.rfind('|')])
lpis_path = lpis_layer.dataProvider().dataSourceUri()
data.append(lpis_path [:lpis_path.rfind('|')])
# find r, p factors and add them to factors
factors = []
r_factor = self.r_factor.text()
p_factor = self.p_factor.text()
factors.append(r_factor)
factors.append(p_factor)
self.progressBar()
self.computeThread = ComputeThread(data, factors, epsg)
self.computeThread.computeFinished.connect(lambda: self.importResults(epsg))
self.computeThread.computeStat.connect(self.setStatus)
self.computeThread.computeError.connect(self.showError)
#self.computeThread.computeProgress.connect(self.progressBar)
if not self.computeThread.isRunning():
self.computeThread.start()
def checkField(self, name_lyr, layer, field_name):
if layer.fieldNameIndex(field_name) == -1:
self.showError(self.tr(u'{} layer must contain field {}.\nClick on \'Compute {} factor\'')\
.format(name_lyr, field_name, field_name))
self._cancel = True
def showError(self, text):
QMessageBox.critical(self, self.tr(u'Soil Erosion Plugin'), u"{}".format(text))
def importResults(self, epsg):
# if self.computeThread.aborted:
# return
# Import results to QGIS
temp_path = self.computeThread.output_path()
for file in os.listdir(temp_path):
if file.endswith(".tif"):
try:
self._se_layer = iface.addRasterLayer(os.path.join(temp_path, file),
self.tr('G Faktor'))
crs = self._se_layer.crs()
crs.createFromId(epsg)
self._se_layer.setCrs(crs)
self.layerOnTop(self._se_layer)
# # Set style be renderer:
# self.setStyle(self._se_layer)
# # set style on .gml file:
euc = self.shp_box_euc.currentLayer()
self._euc_vector = iface.addVectorLayer(euc.source(), "EUC", euc.providerType())
self.layerOnTop(self._euc_vector)
se_source = self._se_layer.source()
self.zonalStat(self._euc_vector, se_source)
self.setVectorErosionStyle(self._euc_vector)
self._euc_vector.commitChanges()
# for field in _euc_vector.pendingFields():
# if field.name() == 'C':
# _euc_vector.startEditing()
# oldname = field.name()
# field.setName('NewName')
# newname = field.name()
# self.showError(u'Old name: {},New name: {}'.format(oldname,newname))
#
except:
self.showError(u'Error during compute zonal statistics.')
self._first_computation = False
self.computeThread.cleanup()
del self.computeThread
# kill progress bar if it is still on (if computation is still on)
try:
self.progress.setParent(None)
self.iface.messageBar().popWidget(self.progressMessageBar)
except:
pass
def layerOnTop(self, layer):
root = QgsProject.instance().layerTreeRoot()
alayer = root.findLayer(layer.id())
clone = alayer.clone()
parent = alayer.parent()
parent.insertChildNode(0, clone)
parent.removeChildNode(alayer)
def setBpejStyle(self, layer):
# define ranges: label, lower value, upper value, hex value of color
k_values = (
(self.tr('0.0-0.1'), 0.0, 0.1, '#458b00'),
(self.tr('0.1-0.2'), 0.1, 0.2, '#bcee68'),
(self.tr('0.2-0.3'), 0.2, 0.3, '#eedd82'),
(self.tr('0.3-0.4'), 0.3, 0.4, '#ffa07a'),
(self.tr('0.4-0.5'), 0.4, 0.5, '#ff4500'),
(self.tr('0.5 and more'), 0.5, 9999.0, '#8b2500'),
)
# create a category for each item in k_values
ranges = []
for label, lower, upper, color in k_values:
symbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
symbol.setColor(QColor(color))
rng = QgsRendererRangeV2(lower, upper, symbol, label)
ranges.append(rng)
# create the renderer and assign it to a layer
expression = 'K' # field name
renderer = QgsGraduatedSymbolRendererV2(expression, ranges)
layer.setRendererV2(renderer)
def setLpisStyle(self, layer):
# define a lookup: value -> (color, label)
land_types = {
'L': ('#005900', self.tr('Forest')),
'R': ('#6d4237', self.tr('Arable land')),
'S': ('#fb5858', self.tr('Orchard')),
'V': ('#d875e4', self.tr('Vineyard')),
'C': ('#f2d773', self.tr('Hop-garden')),
'T': ('#329932', self.tr('Permanent grassland')),
'': ('#808080', self.tr('Unknown')),
}
# create a category for each item in land_types
categories = []
for land_type, (color, label) in land_types.items():
symbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
symbol.setColor(QColor(color))
category = QgsRendererCategoryV2(land_type, symbol, label)
categories.append(category)
# create the renderer and assign it to a layer
expression = 'KULTURAKOD' # field name
renderer = QgsCategorizedSymbolRendererV2(expression, categories)
layer.setRendererV2(renderer)
def setVectorErosionStyle(self, layer):
# define ranges: label, lower value, upper value, hex value of color
g_values = (
(self.tr('Very weakly endangered'), 0.0, 1.0, '#458b00'),
(self.tr('Weakly endangered'), 1.0, 2.0, '#bcee68'),
(self.tr('Moderately endangered'), 2.0, 4.0, '#eedd82'),
(self.tr('Severely endangered'), 4.0, 8.0, '#ffa07a'),
(self.tr('Very severely endangered'), 8.0, 10.0, '#ff4500'),
(self.tr('Extremely endangered'), 10.0, 999999.9, '#8b2500'),
)
# create a category for each item in g_values
ranges = []
for label, lower, upper, color in g_values:
symbol = QgsSymbolV2.defaultSymbol(layer.geometryType())
symbol.setColor(QColor(color))
rng = QgsRendererRangeV2(lower, upper, symbol, label)
ranges.append(rng)
# create the renderer and assign it to a layer
expression = 'G' # field name
renderer = QgsGraduatedSymbolRendererV2(expression, ranges)
layer.setRendererV2(renderer)
def progressBar(self):
"""Initializing progress bar.
:text: message to indicate what operation is currently on
"""
self.progressMessageBar = iface.messageBar().createMessage(self.tr(u'Soil Erosion Plugin:'), self.tr(u' Computing...'))
self.progress = QProgressBar()
self.progress.setMaximum(100)
self.progress.setAlignment(Qt.AlignLeft | Qt.AlignVCenter)
self.cancelButton = QtGui.QPushButton()
self.cancelButton.setText(self.tr('Cancel'))
self.progressMessageBar.layout().addWidget(self.cancelButton)
self.progressMessageBar.layout().addWidget(self.progress)
msgBar = self.iface.messageBar()
msgBar.pushWidget(self.progressMessageBar, iface.messageBar().INFO)
msgBar.findChildren(QToolButton)[0].setHidden(True)
self.cancelButton.clicked.connect(self.onCancelButton)
def onCancelButton(self):
"""Show message box with question on canceling. Cancel computation."""
reply = QMessageBox.question(self, self.tr(u'Soil Erosion Plugin'),
self.tr(u'Cancel computation?{ls}').format(
ls=2 * os.linesep),
QtGui.QMessageBox.Yes | QtGui.QMessageBox.No,
QtGui.QMessageBox.Yes)
if reply == QMessageBox.Yes:
self.computeThread.terminate()
self.computeThread.cleanup()
del self.computeThread
# kill progress bar if it is still on (if computation is still on)
try:
self.progress.setParent(None)
self.iface.messageBar().popWidget(self.progressMessageBar)
except:
pass
def setStatus(self, num, text):
"""Update progress status.
:num: progress percent
"""
self.progressMessageBar.setText(text)
self.progress.setFormat('{}%'.format(num))
self.progress.setValue(num)
def setStyle(self, layer):
provider = layer.dataProvider()
extent = layer.extent()
stats = provider.bandStatistics(1, QgsRasterBandStats.All, extent, 0)
if stats.minimumValue < 0:
min = 0
else:
min = stats.minimumValue
max = stats.maximumValue
range = max - min
add = range // 2
interval = min + add
colDic = {'red': '#ff0000', 'yellow': '#ffff00', 'blue': '#0000ff'}
valueList = [min, interval, max]
lst = [QgsColorRampShader.ColorRampItem(valueList[0], QColor(colDic['red'])),
QgsColorRampShader.ColorRampItem(valueList[1], QColor(colDic['yellow'])),
QgsColorRampShader.ColorRampItem(valueList[2], QColor(colDic['blue']))]
myRasterShader = QgsRasterShader()
myColorRamp = QgsColorRampShader()
myColorRamp.setColorRampItemList(lst)
myColorRamp.setColorRampType(QgsColorRampShader.INTERPOLATED)
# TODO: add classificationMode=Continuos
# myColorRamp.setClassificationMode(QgsColorRampShader.ClassificationMode(1))
# AttributeError: type object 'QgsColorRampShader' has no attribute 'setClassificationMode'
myRasterShader.setRasterShaderFunction(myColorRamp)
myPseudoRenderer = QgsSingleBandPseudoColorRenderer(layer.dataProvider(),
layer.type(),
myRasterShader)
layer.setRenderer(myPseudoRenderer)
layer.triggerRepaint()
def zonalStat(self, vlayer, rlayer_source):
prefix = 'Erosion_G_'
zonalstats = QgsZonalStatistics(vlayer, rlayer_source, prefix, stats=QgsZonalStatistics.Statistic(4))
zonalstats.calculateStatistics(None)
vlayer.startEditing()
for field in vlayer.pendingFields():
if field.name() == 'Erosion_G_':
idx = vlayer.fieldNameIndex(field.name())
vlayer.renameAttribute(idx, 'G')
vlayer.commitChanges()
class ComputeThread(QThread):
# set signals:
computeStat = pyqtSignal(int, str)
computeFinished = pyqtSignal()
computeError = pyqtSignal(str)
def __init__(self, data, factors, epsg):
QThread.__init__(self)
self.data = data
self.factors = factors
self.epsg = epsg
self.er = None
def cleanup(self):
# remove directory with temporary files
if self.er:
shutil.rmtree(self.er.location_path())
def run(self):
self.er = ErosionUSLE(self.data, self.factors, self.epsg, computeStat=self.computeStat, computeError=self.computeError)
try:
self.er.import_data(self.data)
except:
self.computeError.emit(self.tr(u'Error during exporting layers to Grass for computation.'))
self.er.run()
# Export results to temporary directory
self.computeStat.emit(85, self.tr(u'Compute average erosion for EUC...'))
try:
self.temp_path = tempfile.mkdtemp()
self.er.export_data(self.temp_path)
except:
self.computeError.emit(self.tr(u'Error during importing results to map window.'))
self.computeFinished.emit()
def output_path(self):
return self.temp_path