Create stack
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== Build a virtual stack == | == Build a virtual stack == | ||
A VRT (Virtual Dataset) is a list of links to input raster datasets. This has the advantage that no additional physical copy of the original files is necessary which saves storage capacity. | A VRT (Virtual Dataset) is a list of links to input raster datasets. This has the advantage that no additional physical copy of the original files is necessary which saves storage capacity. | ||
| − | # Click {{mitem|text=Raster --> Miscellaneous --> Build Virtual Raster | + | # Click {{mitem|text=Raster --> Miscellaneous --> Build Virtual Raster}}. |
| − | # Input files: Click {{button|text=Select}} and | + | # Input files: Click {{button|text=Select}} and click the checkbox of several single raster band files in the Multiple Selection window. Take care on the order of the files selection: etermines the rank of bands in the resulting multiband file. The rank of files can be changed by drag and drop in the Multiple Selection window. |
| − | # Output file: Click {{button|text= | + | # Output ''Converted'' file: Click {{button|text=...}} {{button|text=Save to file ..-}}and choose a new file name. |
# Click the checkbox '''-separate''' on (see screenshot below). | # Click the checkbox '''-separate''' on (see screenshot below). | ||
[[File:Qgis_virtual_raster.png|400px]] | [[File:Qgis_virtual_raster.png|400px]] | ||
Revision as of 19:57, 21 October 2018
Build a virtual stack
A VRT (Virtual Dataset) is a list of links to input raster datasets. This has the advantage that no additional physical copy of the original files is necessary which saves storage capacity.
- Click Raster --> Miscellaneous --> Build Virtual Raster.
- Input files: Click Select and click the checkbox of several single raster band files in the Multiple Selection window. Take care on the order of the files selection: etermines the rank of bands in the resulting multiband file. The rank of files can be changed by drag and drop in the Multiple Selection window.
- Output Converted file: Click ... Save to file ..-and choose a new file name.
- Click the checkbox -separate on (see screenshot below).
- Click OK
Create a multiband raster file (single bands to multiband)
A multiband file stores several single raster layers in one file.
- Click Raster --> Miscellaneous --> Merge.
- Input files: Click Select and choose several single band raster files by holding Strg + left click. Take care on the order of the file selection: it determines the rank of bands in the resulting multiband file.
- Output file: Click Select and choose a new file name.
- Click the checkbox Place each input band in a separate band on (see screenshot below).
- Click OK
