本文整理汇总了Python中GrassUtils.GrassUtils类的典型用法代码示例。如果您正苦于以下问题：Python GrassUtils类的具体用法？Python GrassUtils怎么用？Python GrassUtils使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了GrassUtils类的9个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: initializeSettings
def initializeSettings(self):
AlgorithmProvider.initializeSettings(self)
if isWindows() or isMac():
ProcessingConfig.addSetting(Setting(self.getDescription(),
GrassUtils.GRASS_FOLDER, 'GRASS folder',
GrassUtils.grassPath()))
ProcessingConfig.addSetting(Setting(self.getDescription(),
GrassUtils.GRASS_WIN_SHELL, 'Msys folder',
GrassUtils.grassWinShell()))
ProcessingConfig.addSetting(Setting(self.getDescription(),
GrassUtils.GRASS_LOG_COMMANDS,
'Log execution commands', False))
ProcessingConfig.addSetting(Setting(self.getDescription(),
GrassUtils.GRASS_LOG_CONSOLE,
'Log console output', False))示例2: processAlgorithm
def processAlgorithm(self, progress):
commands = []
vector = self.getParameterValue(self.VECTOR)
elevation = self.getParameterValue(self.ELEVATION)
color = self.getParameterValue(self.COLOR)
region = \
unicode(self.getParameterValue(self.GRASS_REGION_EXTENT_PARAMETER))
regionCoords = region.split(',')
command = 'g.region '
command += 'n=' + unicode(regionCoords[3])
command += ' s=' + unicode(regionCoords[2])
command += ' e=' + unicode(regionCoords[1])
command += ' w=' + unicode(regionCoords[0])
cellsize = self.getParameterValue(self.GRASS_REGION_CELLSIZE_PARAMETER)
if cellsize:
command += ' res=' + unicode(cellsize)
else:
command += ' res=' + unicode(self.getDefaultCellsize())
commands.append(command)
command = 'nviz'
if vector:
layers = vector.split(';')
for layer in layers:
(cmd, newfilename) = self.exportVectorLayer(layer)
commands.append(cmd)
vector = vector.replace(layer, newfilename)
command += ' vector=' + vector.replace(';', ',')
if color:
layers = color.split(';')
for layer in layers:
(cmd, newfilename) = self.exportRasterLayer(layer)
commands.append(cmd)
color = color.replace(layer, newfilename)
command += ' color=' + color.replace(';', ',')
if elevation:
layers = elevation.split(';')
for layer in layers:
(cmd, newfilename) = self.exportRasterLayer(layer)
commands.append(cmd)
elevation = elevation.replace(layer, newfilename)
command += ' elevation=' + elevation.replace(';', ',')
if elevation is None and vector is None:
command += ' -q'
commands.append(command)
GrassUtils.createTempMapset()
GrassUtils.executeGrass(commands, progress)示例3: checkBeforeOpeningParametersDialog
def checkBeforeOpeningParametersDialog(self):
msg = GrassUtils.checkGrassIsInstalled()
if msg is not None:
html = '<p>This algorithm requires GRASS to be run. \
Unfortunately, it seems that GRASS is not installed in \
your system, or it is not correctly configured to be used \
from QGIS</p>'
html += '<p><a href="http://docs.qgis.org/2.0/en/docs/user_manual/processing/3rdParty.html">Click here</a> to know more about how to install and configure GRASS to be used with QGIS</p>'
return html示例4: getPostProcessingErrorMessage
def getPostProcessingErrorMessage(self, wrongLayers):
html = GeoAlgorithm.getPostProcessingErrorMessage(self, wrongLayers)
msg = GrassUtils.checkGrassIsInstalled(True)
html += '<p>This algorithm requires GRASS to be run. A test \
to check if GRASS is correctly installed and configured in \
your system has been performed, with the following \
result:</p><ul><i>'
if msg is None:
html += 'GRASS seems to be correctly installed and \
configured</i></li></ul>'
else:
html += msg + '</i></li></ul>'
html += '<p><a href= "http://docs.qgis.org/2.0/en/docs/user_manual/processing/3rdParty.html">Click here</a> to know more about how to install and configure GRASS to be used with QGIS</p>'
return html示例5: createAlgsList
def createAlgsList(self):
self.preloadedAlgs = []
folder = GrassUtils.grassDescriptionPath()
for descriptionFile in os.listdir(folder):
if descriptionFile.endswith('txt'):
try:
alg = GrassAlgorithm(os.path.join(folder, descriptionFile))
if alg.name.strip() != '':
self.preloadedAlgs.append(alg)
else:
ProcessingLog.addToLog(ProcessingLog.LOG_ERROR,
self.tr('Could not open GRASS algorithm: %s' % descriptionFile))
except Exception, e:
ProcessingLog.addToLog(ProcessingLog.LOG_ERROR,
self.tr('Could not open GRASS algorithm: %s' % descriptionFile))示例6: processAlgorithm
def processAlgorithm(self, progress):
if system.isWindows():
path = GrassUtils.grassPath()
if path == '':
raise GeoAlgorithmExecutionException(
self.tr('GRASS folder is not configured.\nPlease '
'configure it before running GRASS algorithms.'))
commands = []
self.exportedLayers = {}
outputCommands = []
# If GRASS session has been created outside of this algorithm then
# get the list of layers loaded in GRASS otherwise start a new
# session
existingSession = GrassUtils.sessionRunning
if existingSession:
self.exportedLayers = GrassUtils.getSessionLayers()
else:
GrassUtils.startGrassSession()
# 1: Export layer to grass mapset
for param in self.parameters:
if isinstance(param, ParameterRaster):
if param.value is None:
continue
value = param.value
# Check if the layer hasn't already been exported in, for
# example, previous GRASS calls in this session
if value in self.exportedLayers.keys():
continue
else:
self.setSessionProjectionFromLayer(value, commands)
commands.append(self.exportRasterLayer(value))
if isinstance(param, ParameterVector):
if param.value is None:
continue
value = param.value
if value in self.exportedLayers.keys():
continue
else:
self.setSessionProjectionFromLayer(value, commands)
commands.append(self.exportVectorLayer(value))
if isinstance(param, ParameterTable):
pass
if isinstance(param, ParameterMultipleInput):
if param.value is None:
continue
layers = param.value.split(';')
if layers is None or len(layers) == 0:
continue
if param.datatype == ParameterMultipleInput.TYPE_RASTER:
for layer in layers:
if layer in self.exportedLayers.keys():
continue
else:
self.setSessionProjectionFromLayer(layer, commands)
commands.append(self.exportRasterLayer(layer))
elif param.datatype == ParameterMultipleInput.TYPE_VECTOR_ANY:
for layer in layers:
if layer in self.exportedLayers.keys():
continue
else:
self.setSessionProjectionFromLayer(layer, commands)
commands.append(self.exportVectorLayer(layer))
self.setSessionProjectionFromProject(commands)
region = \
unicode(self.getParameterValue(self.GRASS_REGION_EXTENT_PARAMETER))
regionCoords = region.split(',')
command = 'g.region'
command += ' n=' + unicode(regionCoords[3])
command += ' s=' + unicode(regionCoords[2])
command += ' e=' + unicode(regionCoords[1])
command += ' w=' + unicode(regionCoords[0])
cellsize = self.getParameterValue(self.GRASS_REGION_CELLSIZE_PARAMETER)
if cellsize:
command += ' res=' + unicode(cellsize)
else:
command += ' res=' + unicode(self.getDefaultCellsize())
alignToResolution = \
self.getParameterValue(self.GRASS_REGION_ALIGN_TO_RESOLUTION)
if alignToResolution:
command += ' -a'
commands.append(command)
# 2: Set parameters and outputs
command = self.grassName
for param in self.parameters:
if param.value is None or param.value == '':
continue
if param.name in [ self.GRASS_REGION_CELLSIZE_PARAMETER, self.GRASS_REGION_EXTENT_PARAMETER, self.GRASS_MIN_AREA_PARAMETER, self.GRASS_SNAP_TOLERANCE_PARAMETER, self.GRASS_OUTPUT_TYPE_PARAMETER, self.GRASS_REGION_ALIGN_TO_RESOLUTION ]:
continue
if isinstance(param, (ParameterRaster, ParameterVector)):
value = param.value
if value in self.exportedLayers.keys():
#.........这里部分代码省略.........
示例7: checkBeforeOpeningParametersDialog
def checkBeforeOpeningParametersDialog(self):
return GrassUtils.checkGrassIsInstalled()示例8: checkBeforeOpeningParametersDialog
def checkBeforeOpeningParametersDialog(self):
msg = GrassUtils.checkGrassIsInstalled()
if msg is not None:
return msg示例9: canBeActivated
def canBeActivated(self):
return not bool(GrassUtils.checkGrassIsInstalled())