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Objectives: Select features from a vector layer Iterate over selected features Open the QGIS Python Console From the menu, select Plugins -> Python Console, or Ctrl + Alt + P (Windows) You can type directly into the console, or select the pad and paper icon to write code in the editor. I prefer to write…
Objectives: Retrieve data from the vector attribute table Open the QGIS Python Console From the menu, select Plugins -> Python Console, or Ctrl + Alt + P (Windows) You can type directly into the console, or select the pad and paper icon to write code in the editor. I prefer to write code in the…
Objectives: Get statistics for a raster band Open the QGIS Python Console From the menu, select Plugins -> Python Console, or Ctrl + Alt + P (Windows) You can type directly into the console, or select the pad and paper icon to write code in the editor. I prefer to write code in the editor…
Objectives: Get information from layers that have already been added to the QGIS interface Open the QGIS Python Console From the menu, select Plugins -> Python Console, or Ctrl + Alt + P (Windows) You can type directly into the console, or select the pad and paper icon to write code in the editor. I…
Objectives: Load raster and vector layers without adding them to the QGIS interface Open the QGIS Python Console From the menu, select Plugins -> Python Console, or Ctrl + Alt + P (Windows) You can type directly into the console, or select the pad and paper icon to write code in the editor. I prefer…
Objectives: Query the value of a raster layer at a points Open the QGIS Python Console From the menu, select Plugins -> Python Console, or Ctrl + Alt + P (Windows) You can type directly into the console, or select the pad and paper icon to write code in the editor. I prefer to write…
Objectives: Add fields to a shapefile Delete fields from a shapefile Open the QGIS Python Console From the menu, select Plugins -> Python Console, or Ctrl + Alt + P (Windows) You can type directly into the console, or select the pad and paper icon to write code in the editor. I prefer to write…
List the data attributes Accessing the var property of our netCDF varialbe will list the data attributes for the netCDF file. The output shows us this dataset has one data attribute with the name ‘data’. Which is contained within the names property of var. Calling the names property directly after the attributes() call gives the same result. We can get the name of specific…
Let’s get right into the code. First, make sure you have the ncdf4 package installed. This requires the netcdf4 and hdf5 software to be installed. netcdf4 and hdf5 are not r packages. There are various sources for installing these on your machine. I found this guide to work well for Ubuntu. Once all dependencies are installed we can load…
Objectives Load and symbolize a vector layer with pyqgis Apply basic and graduated symbology Open the QGIS Python Console From the menu, select Plugins -> Python Console, or Ctrl + Alt + P (Windows) You can type directly into the console, or select the pad and paper icon to write code in the editor. I…
More information can be found in the PyQGIS Developer Cookbook. Requirements QGIS version 3.0, or greater Objectives Load and symbolize a raster layer with pyqgis Get statistics from a raster band Open the QGIS Python Console From the menu, select Plugins -> Python Console, or Ctrl + Alt + P (Windows) You can type directly into…