def test_r_binary_folder(self):
"""
Test retrieving R binary folder
"""
self.assertFalse(RUtils.r_binary_folder())
ProcessingConfig.setSettingValue(RUtils.R_FOLDER, '/usr/local/bin')
self.assertEqual(RUtils.r_binary_folder(), '/usr/local/bin')
ProcessingConfig.setSettingValue(RUtils.R_FOLDER, None)
self.assertFalse(RUtils.r_binary_folder())
def load(self):
"""
Called when first loading provider
"""
ProcessingConfig.settingIcons[self.name()] = self.icon()
ProcessingConfig.addSetting(
Setting(self.name(),
RUtils.RSCRIPTS_FOLDER,
self.tr('R scripts folder'),
RUtils.default_scripts_folder(),
valuetype=Setting.MULTIPLE_FOLDERS))
ProcessingConfig.addSetting(
Setting(
self.name(), RUtils.R_USE_USER_LIB,
self.tr('Use user library folder instead of system libraries'),
True))
ProcessingConfig.addSetting(
Setting(self.name(),
RUtils.R_LIBS_USER,
self.tr('User library folder'),
RUtils.r_library_folder(),
valuetype=Setting.FOLDER))
ProcessingConfig.addSetting(
Setting(self.name(),
RUtils.R_REPO,
self.tr('Package repository'),
"http://cran.at.r-project.org/",
valuetype=Setting.STRING))
ProcessingConfig.addSetting(
Setting(self.name(),
RUtils.R_FOLDER,
self.tr('R folder'),
RUtils.r_binary_folder(),
valuetype=Setting.FOLDER))
if RUtils.is_windows():
ProcessingConfig.addSetting(
Setting(self.name(), RUtils.R_USE64,
self.tr('Use 64 bit version'), False))
ProviderActions.registerProviderActions(self, self.actions)
ProviderContextMenuActions.registerProviderContextMenuActions(
self.contextMenuActions)
ProcessingConfig.readSettings()
self.refreshAlgorithms()
self.r_version = RUtils.get_r_version()
return True
def processAlgorithm(self, parameters, context, feedback):
"""
Executes the algorithm
"""
self.results = {}
if RUtils.is_windows():
path = RUtils.r_binary_folder()
if path == '':
raise QgsProcessingException(
self.tr('R folder is not configured.\nPlease configure it '
'before running R scripts.'))
feedback.pushInfo(self.tr('R execution commands'))
output = RUtils.execute_r_algorithm(self, parameters, context,
feedback)
if self.show_plots:
html_filename = self.parameterAsFileOutput(parameters,
RAlgorithm.RPLOTS,
context)
if html_filename:
with open(html_filename, 'w') as f:
f.write('<html><img src="{}"/></html>'.format(
QUrl.fromLocalFile(self.plots_filename).toString()))
self.results[RAlgorithm.RPLOTS] = html_filename
if self.show_console_output:
html_filename = self.parameterAsFileOutput(
parameters, RAlgorithm.R_CONSOLE_OUTPUT, context)
if html_filename:
with open(html_filename, 'w') as f:
f.write(RUtils.html_formatted_console_output(output))
self.results[RAlgorithm.R_CONSOLE_OUTPUT] = html_filename
if self.save_output_values and self.output_values_filename:
with open(self.output_values_filename, 'r') as f:
lines = [line.strip() for line in f]
# get output values stored into the file
outputs = self.parse_output_values(iter(lines))
# merge output values into results
for k, v in outputs.items():
if k not in self.results:
self.results[k] = v
return self.results
def processAlgorithm(self, parameters, context, feedback):
"""
Executes the algorithm
"""
self.results = {}
if RUtils.is_windows():
path = RUtils.r_binary_folder()
if path == '':
raise QgsProcessingException(
self.tr('R folder is not configured.\nPlease configure it '
'before running R scripts.'))
feedback.pushInfo(self.tr('R execution commands'))
script_lines = self.build_r_script(parameters, context, feedback)
for line in script_lines:
feedback.pushCommandInfo(line)
output = RUtils.execute_r_algorithm(self, parameters, context,
feedback)
if self.show_plots:
html_filename = self.parameterAsFileOutput(parameters,
RAlgorithm.RPLOTS,
context)
if html_filename:
with open(html_filename, 'w') as f:
f.write('<html><img src="{}"/></html>'.format(
QUrl.fromLocalFile(self.plots_filename).toString()))
self.results[RAlgorithm.RPLOTS] = html_filename
if self.show_console_output:
html_filename = self.parameterAsFileOutput(
parameters, RAlgorithm.R_CONSOLE_OUTPUT, context)
if html_filename:
with open(html_filename, 'w') as f:
f.write(RUtils.html_formatted_console_output(output))
self.results[RAlgorithm.R_CONSOLE_OUTPUT] = html_filename
return self.results