Virtual Raster Builder Documentation

The Virtual Raster Builder helps to define GDAL Virtual Raster (VRT) files by drag and drop. It helps to create a new raster image by stacking, mosaiking, spatial- oder band-subsetting.

Workflow

_images/workflow.png
  1. Add potential source files to the list of source files:

    Button Action
    mActionAddRasterLayer.png Add source raster
    mActionRemoveRasterLayer.png Remove source raster
    mActionImportFromRegistry.png Load source raster files that are known to QGIS
    mActionExpandTree.png expand source file tree node(s)
    mActionCollapseTree.png collapse source file tree node(s)
  2. Specify the VRT structure by drag and drop of source bands

    Button Action
    mActionAddVirtualRaster.png Add virtual band
    mActionRemoveVirtualRaster.png Remove virtual band
    mActionImportVirtualRaster.png Import virtual bands from existing VRT file
    mActionExpandTree.png Expand VRT tree node(s)
    mActionCollapseTree.png Collapse VRT tree node(s)

    Virtual band names can be changed by mouse double-click.

  3. Specify other VRT settings:

    • set spatial resolution
    • set the resampling method
    • set spatial extent
    • set output format

4. Save the new file as VRT. In case of output formats other than VRT, e.g. GeoTIFF, the VRT is created in a temporary location first and the binary file afterwards using gdal.Translate.

Licence and Use

The Virtual Raster Builder is licenced under the GPL-3 Licence.