Are there any matlab functions that can be used to edit the input file? I want to do FEM analyses involving a material whose Young's modulus is modelded as a random field instead of a constant value. In that case, after I get the coordinates of every elements using your A2M tool, I need to change the Young's modulus of each of those elements in the input file. It is really a hard job to manually edit the input file, especially when there are tons of elements. Could you please give me some suggestions? Thanks, and looking forward to you response..