Convert spatial data to WRF Pre-Processing System (WPS)

Description

Let’s try to convert a GeoTIFF to WRF Pre-Processing System (WPS).

We will be using GIS4WRF for conversion. For more information about the plugin, please refer to https://gis4wrf.github.io/documentation/.

1. Launch the GIS4WRF dock from Plugins > GIS4WRF > GIS4WRF in QGIS.
2. Go to GIS4WRF Dock and select Datasets > Process.
3. Select the layer in the Layers Dock to be converted.
4. Click on the Convert active layer to WPS binary.
5. If your data is categorical (i.e., Land Use/ Land Cover), then click on Yes else No.
6. Choose an empty folder to save the WPS binary files.
7. Verify the results by importing the WPS binary into the QGIS by selecting the Layer > Add Layer > Add WPS Binary Layer

Just in case if there is a problem with the convertion.

This may happen to the float files. A work around is to convert the files to the 4 decimal place.

1. Use Raster > Raster Calculator to multiply the raster by 10,000.
2. Use Raser > Conversion > Translate (Convert Format) to change the raster Output data type to UInt16.
3. Now, save to the WPS binary (follow steps 3 to 6 shown above).
4. Once files are converted, go to the folder where you have saved the WPS binary files and open index in a text editor.

5. Add following line in the last of the index file:

   scale_factor = 1e-04

6. Verify the converted files by importing into the QGIS.