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Hi, I've got the following problem: I've got about 300 matrices with different number of rows and columns. Now I want to drop the first and last column for each of them. I tried to use the following command: matrix x_new = @subextract(maxtrix_x, 1, 2, ?, ?) I already looked for a command, which tell...

Hi, I've got the following problem: I'd like to delete all series-objects, which contain for every observation the value 0. Here an example: series_object_1 contains the following values: 1986 1 1987 2 1988 0 1989 0 1990 0 series_object_2 contains the following values: 1986 0 1987 0 1988 0 1989 0 19...

Hi, I've got problems in solving the following problem: Actually, I want to determine the values of a (4x1 matrix) by solving a linear system of equations, whereby the first value of the (4x1 matrix) equals 1. So, there are 3 unknown values. The values of the (3x4 matrix) are known. (3x4 matrix) * (...