Beacuse our professor ask us to make each grid into table ( he sayed that let each grid exist number...
so i need to use raster calculator
Professor give us formula : [your dem] - [your dem] + $$rowmap * $$ncols + $$colmap
ps. My original dem is alisan20mdem
(my prsfessor 's version is 9.3 and I was 10.2.2 )
so..i type formula on and got error message
At first i thought that problem is about Alisan20m1.img , so i delete it
but i found the main problem is $$rowmap !!! if i type it on , it would show error message .
but i leave the formula that[ Alisan20m1.img - Alisan20m1.img ] and the message disappeared .
what can i do ?? please teasch me....thank you very much