Split stack
From AWF-Wiki
(Difference between revisions)
(→Using OTB SplitImage) |
(→Using OTB SplitImage) |
||
| Line 3: | Line 3: | ||
# In processing toolbox, type {{typed|text=split image}} into the search field to find the {{button|text=OTB --> Image Manipulation --> SplitImage}} tool and open it. | # In processing toolbox, type {{typed|text=split image}} into the search field to find the {{button|text=OTB --> Image Manipulation --> SplitImage}} tool and open it. | ||
[[File:qgis-otb-splitimage.png|400px]] | [[File:qgis-otb-splitimage.png|400px]] | ||
| + | The ''Output pixel type'' is {{typed|text=float}}. (Note, the option {{typed|text=int}} does currently not work!). | ||
| + | Choose an output file name: {{button|text=Save to file}}. {{button|text=Run in background}}. | ||
| + | The resulting single band files need to be loaded manually into the map canvas. | ||
=Using GDAL Translate= | =Using GDAL Translate= | ||
Revision as of 19:02, 21 October 2018
Using OTB SplitImage
- Click the Open Data Source Manager
and then Add raster layer 
and select the file /geodata/raster/s2/Subset_S2A_MSIL2A_20170619T_MUL.tif.
- In processing toolbox, type split image into the search field to find the OTB --> Image Manipulation --> SplitImage tool and open it.
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
- Click the Open Data Source Manager and then Add raster layer and select the file /geodata/raster/s2/Subset_S2A_MSIL2A_20170619T_MUL.tif.
- 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.
- Repeat the steps for other bands: change the name of the output file and edit the -b option accordingly.
- 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.
