Editing raster cell values in QGIS using Serval plugin

SEPTEMBER 05, 2016 news plugins qgis

Users can directly edit raster cell values using Serval plugin in QGIS.

How to use Serval

Serval is available from QGIS plugin repository. Note that you will need to restart QGIS if you upgrade Serval from an earlier version.

Once installed, Serval functions and settings will be available from the toolbar.

Serval Toolbar in QGIS

Serval supports Undo/Redo for editing values of raster. But it is recommended to make a copy of your raster.

Currently, the following functionalities are available:

  • Probe mode Displays raster bands values in boxes.
  • Draw mode Draw/Edit mode: bands values can be modified in the boxes and written to the current raster cell by hitting the Enter key. In this mode the values will be also assigned to any other raster cell clicked by user.
  • Write nodata To replace a cell value with the NODATA value.
  • Define nodata To define or replace the NODATA value.
  • Color picker To pick a color using QGIS color picker (3-bands rasters only).
  • Undo Redo To Undo/Redo the cell edit. Edits history is saved separately for each raster, that is, undo/redo is always done for current raster layer.

Future developments

We’d like to add support to edit values using spatial and expression selection tools.

For any problems or feedback, please consider to file a ticket here.

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Posted by Radek Pasiok, Saber Razmjooei