Octave: I have a file called file1.m that contains this matrix. I want to read this file and pass it to a matrix and then delete column 2 and column 4. This new file is called file2.m How do I do this?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Octave: I have a file called file1.m that contains this matrix. I want to read this file and pass it to a matrix and then delete column 2 and column 4. This new file is called file2.m How do I do this?

file1.m

1                    a               x                 1              

2                    b               m                2               

3                    c                t                 3               

4                    d                j                 7                      

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It says that 'readmatrix' is undefined. Do I need to use dlmread()?

My original question was more if I had a file with entries, how do I throw them into a matrix? 

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