Monday 11 April 2016

Extracting raster classe(s) and creating new raster that is SMALLER in size using QGIS?


Extracting raster values and creating new raster in QGIS? works great but there is no reduction in the new raster file size after raster calculator is run displaying just one or two classes (values) out of 8 classes... aerial tiffs segmented (using Orfeo) to capture tree canopies in this case.



Is there a tool that will complete this same process but ALSO result in a smaller file (tiff) size?


Dealing with 100mb tiffs that need to be reduced in size since they need to be converted to a shp.


100mb is apparently way too big for QGIS's polygonize tool as it hangs up in a seemingly infinite loop.




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