Hi,
With a view to perform a decision strategy analysis, I have imported rasters from arcgis (using av2idrisi tool - not always easy).
systematically, the area outside my AOI present a raster value of -9999 (which is as expected) but when I look at the metadata, this value is flagged as "missing data" (and not as it should be as "background data").
How can I change this ? I have tried to simply change the flag definition but when I perform the decision strategy analysis, it seems that It doesn't change anything.
Moreover, when I standardize the factors with fuzzy functions, the area flagged as "missing data" (or as "background" when I change the flag definition) is not flagged anymore (and received either 0 or 255 as value).
I would be very pleased If someone could help me.
Have a nice day,
Yannick