Error in the projection of deforestation in the future land cover map - grid-shaped projection

I am working with Land Change Modeler in IDRISI Taiga. I am using land cover maps for the years 2002 and 2011. My area of study is the entire Cerrado biome (Brazilian savannah). Using one or more drivers (I have already tested both possibilities) and the Markov Chain, the future land use map is generated with an error. Future deforestation is projected on the map in a discontinuous way, in a grid-shaped projection, both within the of my study area and outside of it, in the background. I tried to used logistic regression instead of Markov chain, I tried to reduced the spatial resolution from 60m to 180m, but I still get the same error. I wish you could help me. Thanks.


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