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using external data

I try to model a soil cross section using a submodel of m*n instances. Since I have lots of parameter for each of the m*n cells, I need to use a .csv file to enter the total description of the soil. Unfortunately, I don't manage to do this : there is no problem with a vector but when I try to use a matrix of parameters, I tear off my hair... Could soe explain me precisely how can the csv file be loaded on Simile 44?
thank you.

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Hiya...the problem could be to do with the layout of the data in your file. Does it actually contain a lot of values in an x*y grid? For Simile the indices and data must be in separate columns.

Thank you for your reply. The problem has been solved : csv files by Excel don't use commas but semicolons as separators.