nicevic

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13 years, 340 days

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Hi, I imported some data from a csv file, and it's a big 2x1000 matrix, and it's assigned to a variable A, if I input A[1,1], it can't show the correct content in the matrix. On the contrary, if I input a matrix by hand, say a 3x3 matrix,and assign it to B, then I input B[2,1], I can get the correct number in the matrix B. Can anyone show me what's wrong? Also, how can take out one column or one row in a matrix and do calculations in the future? (say assign them to seperate variables and calculate and plot....) Thanks, Vic
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