On Fri, Dec 7, 2018 at 8:14 PM Stefan Blumentrath <stefan.blumentr...@nina.no> wrote: > > Hi Shane, > > Following up on robertos answer: > > You could try the Normalized Difference Water Index (NDWI) which is computed > for S-2 as: > > ndwi = (B08-B11)/(B08+B11) > > or alternatively > > ndwi = (B03 - B08) / (B03 + B08) > > See e.g.: > https://github.com/sentinel-hub/custom-scripts/blob/master/sentinel-2/ndwi/script.js
... or just adapt the bands here: https://grass.osgeo.org/grass74/manuals/i.vi.html#calculation-of-ndvi > You could also take a look at Sentinel-1 for flooding / water bodies. > However, Sentinel-1 would have to be pre-processed in SNAP/gpt. Yes, Sentinel-1 is probably more relevant when it comes to identification of flooded areas. Markus _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
