Split stack

From AWF-Wiki
Revision as of 20:02, 21 October 2018 by Hfuchs (Talk | contribs)

Jump to: navigation, search

Using OTB SplitImage

  1. Click the Open Data Source Manager QGIS 3.0 datasource.png and then Add raster layer QGIS 2.0 addrast.png and select the file /geodata/raster/s2/Subset_S2A_MSIL2A_20170619T_MUL.tif.
  2. In processing toolbox, type split image into the search field to find the OTB --> Image Manipulation --> SplitImage tool and open it.

Qgis-otb-splitimage.png The Output pixel type is float. (Note, the option int does currently not work!). Choose an output file name: Save to file. Run in background. The resulting single band files need to be loaded manually into the map canvas.

Using GDAL Translate

  1. Click the Open Data Source Manager QGIS 3.0 datasource.png and then Add raster layer QGIS 2.0 addrast.png and select the file /geodata/raster/s2/Subset_S2A_MSIL2A_20170619T_MUL.tif.
  2. In the processing toolbar, type Translate into the search field to find the GDAL\OGR --> Translate (Convert format) tool and open it.
    • Unfold the Advanced parameters and change the output data format to unsigned 16bit integer): -ot UInt16
    • Click the button ... of Converted to select path and name of output file.
    • Type in the textbox Additional creation parameters: -b 1

( This selects only the first band).

    • Click Run.

Qgis split stack.png

    • Repeat the steps for other bands: change the name of the output file and edit the -b option accordingly.
  1. Create a multiband file with a spectral subset of 4 bands. Change the output file and the additional creation options:
    • Converted output file:Subset_S2A_MSIL2A_20170619T_B02030408.tif
    • Additional creation parameters: -b 2 -b 3 -b 4 -b 8
    • Click Run.
Personal tools
Namespaces

Variants
Actions
Navigation
Development
Toolbox
Print/export