RASTER LULC CHANGES (DIFFERENT NUMBER OF TYPES)

Question

I need help! my 2007 seven map has only 8 types of land cover but by 2021 it has increase to 9 types. I tried to use the (2021map - 1) + 2007 -1 raster calculator. The output is inaccurate, do you suggest I remove the one type to make it equal? Also I cannot remove that one polygon also. Thank you

MarianaReyes · Answer

if your curious the mangroves turned into grassland hence the additional type. The only thing I have with combined is that I'm not sure about tis matrix form but I wil try to look into it thanks

DanPatterson · Answer

check out Combine, it returns way more information than the raster calculator expression, specifically, no only did it change, but what did it change into

MarianaReyes · Answer

Yes everything is the same the only think different was that 2007 only had 8 land cover types while 2021 had 9 types.you think its better than the raster calcullator I used? Cause I want to make a matrix with the percentage change, thats why I used the calculator equation above.