def __init__(self, iface):
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value("locale/userLocale")[0:2]
localePath = os.path.join(self.plugin_dir, 'i18n', 'accassess_{}.qm'.format(locale))
if os.path.exists(localePath):
self.translator = QTranslator()
self.translator.load(localePath)
if qVersion() > '4.3.3':
QCoreApplication.installTranslator(self.translator)
# Create the dialog (after translation) and keep reference
self.dlg = AccAssessDialog()
class AccAssess:
def __init__(self, iface):
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value("locale/userLocale")[0:2]
localePath = os.path.join(self.plugin_dir, 'i18n', 'accassess_{}.qm'.format(locale))
if os.path.exists(localePath):
self.translator = QTranslator()
self.translator.load(localePath)
if qVersion() > '4.3.3':
QCoreApplication.installTranslator(self.translator)
# Create the dialog (after translation) and keep reference
self.dlg = AccAssessDialog()
def initGui(self):
# Create action that will start plugin configuration
self.action = QAction(
QIcon(":/plugins/accassess/icon.png"),
u"Accuracy Assessment", self.iface.mainWindow())
# connect the action to the run method
self.action.triggered.connect(self.run)
# Add toolbar button and menu item
self.iface.addToolBarIcon(self.action)
self.iface.addPluginToMenu(u"&Accuracy Assessment", self.action)
#- Hook the select button to a file dialog
self.dlg.ui.outFileSelectButton.clicked.connect(self.showFileSelectDialog)
def showFileSelectDialog(self):
fname = QFileDialog.getSaveFileName(self.dlg, 'Save File', os.path.expanduser('~'))
self.dlg.ui.outFileLineEdit.setText( fname )
def unload(self):
# Remove the plugin menu item and icon
self.iface.removePluginMenu(u"&Accuracy Assessment", self.action)
self.iface.removeToolBarIcon(self.action)
# run method that performs all the real work
def run(self):
#- populate the combo boxes with loaded layers
self.dlg.initLayerCombobox( self.dlg.ui.referenceComboBox, 'key_of_default_layer' )
self.dlg.initLayerCombobox( self.dlg.ui.comparisonComboBox, 'key_of_default_layer' )
# show the dialog
self.dlg.show()
# Run the dialog event loop
result = self.dlg.exec_()
# See if OK was pressed
if result == 1:
#- this gets the layer label from the menu but that's not the key
#-print self.dlg.ui.referenceComboBox.currentText()
#- get the layer
ref_layer = self.dlg.layerFromComboBox( self.dlg.ui.referenceComboBox )
comp_layer = self.dlg.layerFromComboBox( self.dlg.ui.comparisonComboBox )
#- get some RasterDS objects (defined in raster_handling.py) so we can do
#- gdal stuff.
ref_ds = RasterDS(ref_layer)
comp_ds = RasterDS(comp_layer)
#- get 2d arrays from datasets. I'm currently assuming the extents are
#- the same. I'll need to change that later. I should also check the shape
#- of the band array.
ref_arr = ref_ds.band_array[0]
comp_arr = comp_ds.band_array[0]
#- I only want to compare non-zero values so I need the indexes of nonzeros
idx = ref_arr.nonzero()
#- get the error matrix
em = error_matrix(ref_arr[idx],comp_arr[idx])
#- set the title
em.title = "%s (ref) vs. %s" % (str(ref_layer.name()),str(comp_layer.name()))
#- get the file name that's in the filename line edit (set in showFileSelectDialog)
filename = str( self.dlg.ui.outFileLineEdit.text() )
em.save_csv( filename )
