hotspot_analysis.py 文件源码

def load_comboBox(self, layers):
        """Load the fields into combobox when layers are changed"""

        selectedLayerIndex = self.dlg.comboBox.currentIndex()

        if selectedLayerIndex < 0 or selectedLayerIndex > len(layers):
            return
        try:
            selectedLayer = layers[selectedLayerIndex]
        except:
            return

        fieldnames = [field.name() for field in selectedLayer.pendingFields()]

        self.clear_fields()
        self.dlg.comboBox_C.addItems(fieldnames)
        (path, layer_id) = selectedLayer.dataProvider().dataSourceUri().split('|')

        inDriver = ogr.GetDriverByName("ESRI Shapefile")
        inDataSource = inDriver.Open(path, 0)
        inLayer = inDataSource.GetLayer()
        global type
        type = inLayer.GetLayerDefn().GetGeomType()

        if type == 3:  # is a polygon
            self.dlg.checkBox_queen.setChecked(True)
            self.dlg.lineEditThreshold.setEnabled(False)
            self.dlg.checkBox_optimizeDistance.setChecked(False)
            self.dlg.checkBox_optimizeDistance.setEnabled(False)
            self.dlg.lineEdit_minT.setEnabled(False)
            self.dlg.lineEdit_maxT.setEnabled(False)
            self.dlg.lineEdit_dist.setEnabled(False)

        else:
            self.dlg.checkBox_queen.setChecked(False)
            self.dlg.lineEditThreshold.setEnabled(True)
            self.dlg.checkBox_optimizeDistance.setEnabled(True)
            self.dlg.lineEdit_minT.setEnabled(True)
            self.dlg.lineEdit_dist.setEnabled(True)
            self.dlg.lineEdit_maxT.setEnabled(True)
            thresh = pysal.min_threshold_dist_from_shapefile(path)
            self.dlg.lineEditThreshold.setText(str(int(thresh)))