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Hello Dan, sorry, that is actually what I did. Cloud cover values have "nodata" in my raster. I dont really understand why I get these results because the values in NIR band range from -0.1 to 0.8 and in the RED band from -0.1 to 0.7. Clouds have no data and anyways the NDVI ranges from -110 to 32.
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05-23-2017
03:58 AM
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Hey guys, i´m trying to create an NDVI map from Landsat 8 OLI images by using raster calculator witth the NDVI formula (NIR-Red / NIR+Red). So far it worked out pretty good, but I have a few clouds in my satelllite data which I´m trying to mask out. I already used the QA band for cloud and cloud shadow masking, but I don´t know how to apply it on my calculations. I tried to put the cloud values to zero, but then I get NDVI values which ranges from -110 to 32. So I think this way doesn´t work properly. I would be grateful on suggestions on how to handle cloud cover in NDVI calculations. Thank you in advance!
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05-23-2017
03:08 AM
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I have three major soil groups in my watershed. There are no soil samples available, but I would use data from FAO database to estimate k-factors for the soils. I think I would be able to create a shapefile, showing the three different k-factors in my watershed, but I´m not sure on how to convert them into rasterdata, with which I can calculate USLE in the end. So, actually I´m looking for help on how to convert that data into a rasterfile.
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04-03-2017
08:12 AM
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Hello, I would like to do a soil erosion modelling based on RUSLE in ArcGIS. For that I would like to create a raster map which contains the k factors for my watershed, so that I can use raster calculator in the end to multiply the different factors. I´m not really advanced in the handling of ArcGIS, so I would be really grateful if someone could give me some hints on how to create this rasterfile. Thank you so much in advance. L.H.
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04-03-2017
05:06 AM
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