Great - thanks all. I'll let you know how I get on. Thanks On Sath 8 Noll 2018 at 12:09, Markus Neteler <nete...@osgeo.org> wrote:
> 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 > -- Le gach dea ghui, *Shane Carey* *GIS and Data Solutions Consultant*
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