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2014-10-23 10:56:20 +0200 | asked a question | load data file to draw surface I have a matrix consisting of 512 rows and 512 columns. I have written this matrix down into a text file. Each cell of the matrix contains a positive value. I want to plot these values in 3 dimensional system to form a surface by uploading the text file. How to do it in sage ? Thank you |