Dear all, I am trying to replace the value in a matrix by specific value form noter matrix. The problem I am facing is: The size of one matrix is 30294 by 23(say matrix A) while the other matrix from which the values are intented to be extrated has the dimensions i.e. 14813 by 23(say matrix B). The first two column of both matrix have the X and Y coordinates. Actually based on coordinate matrix B is subset of matrix A. I want to replace the values of matrix A (from column 3 to 23) which have the same coordinates as that in matrix B. Any help will be greatly appreciated Thanking you Pujan
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