//test that measuring an empty polygon doesn't crashmeasurePolygon 示例3: addPoint ▲点赞 5▼ voidQgsMeasureDialog::addPoint( QgsPoint &point ) { QSettings settings;intdecimalPlaces = settings.value("/qgis/measure/decimalplaces","3").toInt();// Create QgsDistance Area for customization Pro...
idx1 =-1idx2 =-1fields = layer.pendingFields()ifgeometryType == QGis.Polygon: (idx1, fields) = vector.findOrCreateField(layer, fields,'area',21,6) (idx2, fields) = vector.findOrCreateField(layer, fields,'perimeter',21,6)elifgeometryType == QGis.Line: (idx1, fields) = vector....
QSettings settings;intdecimalPlaces = settings.value("/qgis/measure/decimalplaces","3").toInt();// Create QgsDistance Area for customization ProjectionEnabled settingQgsDistanceArea myDa; configureDistanceArea( myDa );// show current distance/area while moving the point// by creating a temporary ...
Open AccessArticle by Robin Kümmerer 1, Patrick Ole Noack 2and Bernhard Bauer 1,* 1 Crop Production & Crop Protection, Institute for Biomass Research, University of Applied Sciences Weihenstephan-Triesdorf, Markgrafenstrasse 16, 91746 Weidenbach, Germany ...