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Support for SAGA Next Gen Provider plugin in QGIS 3.30 or newer (#11) #12

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Support for SAGA Next Gen Provider plugin in QGIS 3.30 or newer (#11) #12

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24 changes: 21 additions & 3 deletions csmap_make.py
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,25 @@ def loadResultFiles(self):
def _getTempFileName(self, file_name):
return processing.getTempDirInTempFolder()+r'/'+file_name

def _isEnabledSaga(self, sagang=False):
algs_prefix = 'sagang:' if sagang else 'saga:'
try:
processing.run(algs_prefix+"gdalformats", {'FORMATS':'TEMPORARY_OUTPUT','TYPE':2,'ACCESS':2,'RECOGNIZED':True})
except QgsProcessingException:
return False
else:
return True

def csmapMake(self, dem, curvature_method, gaussian_params, progress_val, progress_step, to_file=False, outdir=None, batch_mode=False):
# Support for SAGA Next Gen Provider plugin in QGIS 3.30 or newer
# https://github.com/waigania13/CSMapMaker/issues/11
if self._isEnabledSaga(True):
algs_prefix = 'sagang:'
elif self._isEnabledSaga(False):
algs_prefix = 'saga:'
else:
raise QgsProcessingException("SAGA Provider or SAGA Next Gen Provider plugin is disabled.")

if type(dem) is str:
dem_layer = QgsRasterLayer(dem, "DEM")
QgsProject.instance().addMapLayer(dem_layer, False)
Expand All @@ -40,20 +58,20 @@ def csmapMake(self, dem, curvature_method, gaussian_params, progress_val, progre
dem_layer = dem

options = {"ELEVATION":dem_layer, "METHOD":6, "UNIT_SLOPE":0, "UNIT_ASPECT":0, "SLOPE":self._getTempFileName("SLOPE.sdat"), "ASPECT":self._getTempFileName("ASPECT.sdat"), "C_GENE":self._getTempFileName("C_GENE.sdat"), "C_PLAN":self._getTempFileName("C_PLAN.sdat"), "C_PROF":self._getTempFileName("C_PROF.sdat"), "C_TANG":self._getTempFileName("C_TANG.sdat"), "C_LONG":self._getTempFileName("C_LONG.sdat"), "C_CROS":self._getTempFileName("C_CROS.sdat"), "C_MINI":self._getTempFileName("C_MINI.sdat"), "C_MAXI":self._getTempFileName("C_MAXI.sdat"), "C_TOTA":self._getTempFileName("C_TOTA.sdat"), "C_ROTO":self._getTempFileName("C_ROTO.sdat")}
dem_result = processing.run("saga:slopeaspectcurvature", options, feedback= QgsProcessingFeedback())
dem_result = processing.run(algs_prefix+"slopeaspectcurvature", options, feedback= QgsProcessingFeedback())

QtCore.QCoreApplication.processEvents()
progress_val = progress_val + progress_step
self.progressBar.setValue(progress_val)

gaussian = processing.run("saga:gaussianfilter", {"INPUT":dem_layer, "SIGMA":gaussian_params[0], "MODE":1, "RADIUS":gaussian_params[1], "RESULT":self._getTempFileName("RESULT.sdat")}, feedback= QgsProcessingFeedback())
gaussian = processing.run(algs_prefix+"gaussianfilter", {"INPUT":dem_layer, "SIGMA":gaussian_params[0], "MODE":1, "RADIUS":gaussian_params[1], "RESULT":self._getTempFileName("RESULT.sdat")}, feedback= QgsProcessingFeedback())

QtCore.QCoreApplication.processEvents()
progress_val = progress_val + progress_step
self.progressBar.setValue(progress_val)

options = {"ELEVATION":QgsRasterLayer(gaussian["RESULT"]), "METHOD":6, "UNIT_SLOPE":0, "UNIT_ASPECT":0, "SLOPE":self._getTempFileName("SLOPE.sdat"), "ASPECT":self._getTempFileName("ASPECT.sdat"), "C_GENE":self._getTempFileName("C_GENE.sdat"), "C_PLAN":self._getTempFileName("C_PLAN.sdat"), "C_PROF":self._getTempFileName("C_PROF.sdat"), "C_TANG":self._getTempFileName("C_TANG.sdat"), "C_LONG":self._getTempFileName("C_LONG.sdat"), "C_CROS":self._getTempFileName("C_CROS.sdat"), "C_MINI":self._getTempFileName("C_MINI.sdat"), "C_MAXI":self._getTempFileName("C_MAXI.sdat"), "C_TOTA":self._getTempFileName("C_TOTA.sdat"), "C_ROTO":self._getTempFileName("C_ROTO.sdat")}
result = processing.run("saga:slopeaspectcurvature", options, feedback= QgsProcessingFeedback())
result = processing.run(algs_prefix+"slopeaspectcurvature", options, feedback= QgsProcessingFeedback())

QtCore.QCoreApplication.processEvents()
progress_val = progress_val + progress_step
Expand Down