Changing pixel size
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(Difference between revisions)
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# Click {{button|text=Open}}, and the raster layer appears on the QGIS canvas. | # Click {{button|text=Open}}, and the raster layer appears on the QGIS canvas. | ||
# In the processing toolbar, type {{typed|text=Resamling}} into the search field to find the {{button|text=SAGA --> Raster Tools --> Resampling)}} tool. Open it with a double click. | # In the processing toolbar, type {{typed|text=Resamling}} into the search field to find the {{button|text=SAGA --> Raster Tools --> Resampling)}} tool. Open it with a double click. | ||
| − | # For producing smaller pixels (5m) we use settings as shown in the screenshot: | + | # For producing smaller pixels (5m) we use settings as shown in the screenshot below: |
[[File:Qgis_upscaling.png|600px]] | [[File:Qgis_upscaling.png|600px]] | ||
Click {{button|text=Run}}. | Click {{button|text=Run}}. | ||
| − | # For producing | + | # For producing larger pixels (100m) we use settings as shown in the screenshot below: |
[[File:Qgis_downscaling.png|600px]] | [[File:Qgis_downscaling.png|600px]] | ||
Click {{button|text=Run}}. | Click {{button|text=Run}}. | ||
[[Category:Working with Raster Data]] | [[Category:Working with Raster Data]] | ||
Revision as of 12:36, 23 October 2017
Often we need to change the pixel size (or spatial resolution) of a raster layer without changing the extent. The result of Up-sampling (or downscaling) are smaller pixels the result of Down-sampling (or upscaling) are larger pixels
- Click the Add raster layer
and select a single band file C:/OSGeo4W64/geodata/raster/s2/Subset_S2A_MSIL2A_20170619T_B03.tif. This is the spectral green band with a pixel size of 10m.
- Click Open, and the raster layer appears on the QGIS canvas.
- In the processing toolbar, type Resamling into the search field to find the SAGA --> Raster Tools --> Resampling) tool. Open it with a double click.
- For producing smaller pixels (5m) we use settings as shown in the screenshot below:
Click Run.
- For producing larger pixels (100m) we use settings as shown in the screenshot below:
Click Run.
