Search Results

In order to get the information in a table you would first have to access the layer's features. In my case, I put the features in a variable. Then you loop through the features, and for each feature y …

I will write a quick explanation of the pyuic4 and pyrcc4 commands for future reference. Most tutorials simply tell you to copy some code, but no one explains exactly what you are about to do. It is q …

The following snippet works for me: uri = "file:///C:/testdata/somecsv.csv?delimiter=%s" % (";") lyr = QgsVectorLayer(uri, 'New CSV','delimitedtext') QgsMapLayerRegistry.instance().addMapLayer(lyr) F …

You could access the specific feature, without a loop, using the setFilterFid() method. In your case, if you wanted to call the feature in row 222, you would do: aLayer = iface.activeLayer() reques …

Can a memory layer be used as an input and/or output with runalg? With runandload I get this to work: processing.runandload("qgis:mergevectorlayers","memory:bufferOne", "memory:bufferTwo", r"memory …

What I am trying to do: loop through a point shapefile and select each point that falls into a polygon. The following code is inspired by a spatial query example I found in a book: mitte_path = r"D: …

I am trying to use the processing toolbox to perform a spatial query (points in polygon). I am not sure how to use the tool and I keep getting this Error: Wrong number of parameters. Here is my scri …

A simple way would be using The polygon-line intersection tool from the SAGA toolbox. This would work: import processing polys = QgsVectorLayer(r"C:\PyQGIS_Test\polys.shp", 'poly', 'ogr') lines = Qg …

I am not performing the join via PyQGIS. The join is done manually and I would just like to use PyQGIS to detect which fields have been joined. …

According to the PyQGIS Developer Cookbook all I have to do is add category=Database to my plugin's metadata.txt. However, that does not have any effect. …

I am unclear on why one should use QgsFeatureRequest() when iterating over a file’s features. Let’s say I would like to print out all IDs in my currently active dataset. Now, most examples will provi …

Two steps: - add a line that indicates UTF-8 encoding to the top of your script - add the letter u (to indicate unicode) before the string that contains the umlaut For example, the following snippet: …

With some advice from a workmate I finally got it to work using within(). General logic get features of polygon(s) get features of points loop through each feature from polygon file, and for each: …

You can use the Reproject Layer algorithm from the processing toolbox. Let's assume you have a cities.shp in a folder named testing, and you want to create a new file cities_prj.shp that is transform …

You are calling the wrong class. What you need to call is mapCanvas, and not canvas. Change your code to this: allLayers = iface.mapCanvas().layers() for i in allLayers: print i.name() This wi …