i am trying to iterate over a large list of features and making a screenshot of the selected feature. My problem is that it seems to be a delay between the refreshing of the canvas and the taking of the screenshot. In other words, the screenshot taken does not correspond to feature i but to feature i-1, sometimes i have several identical screenshots. Is it possible to explicitely wait until the rendering is done by the mapCanvas before calling the saveAsImage method? Thank you in advance for your help. This is globally the code that i am using to do this task.
for i in range
: layer.select(i) iface.actionZoomToSelected().trigger() qgis.utils.iface.mapCanvas().zoomScale(1000) iface.mapCanvas().refresh() imgname = '_'.join(['','object',str(i)]) imgname = ''.join([imgname,'.png']) iface.mapCanvas().saveAsImage(imgname)
أكثر...
for i in range
: layer.select(i) iface.actionZoomToSelected().trigger() qgis.utils.iface.mapCanvas().zoomScale(1000) iface.mapCanvas().refresh() imgname = '_'.join(['','object',str(i)]) imgname = ''.join([imgname,'.png']) iface.mapCanvas().saveAsImage(imgname) أكثر...