Matlab matrix image conversion

Question

I am working with MATLAB for a school project. The assignment is to import a matrix file supplied to me, and display it as a new figure using image. Right now, I can make an image with

m1 = load('matrix1.csv'); image(m1)

But the image is rotated to the right. How do I rotate it so the image is presented horizontally rather than vertically?

Answer 1

Your issue is likely arising from the fact that there are different ways of storing data (row-major vs. column-major). In this case, your .csv file clearly is not in the format you are expecting. The easiest thing to do is to simply transpose the matrix containing your data:

m1 = m1';
image(m1);

If there is something crazier going on and this flips it the wrong way (I don't think this should be the case, but you never know), you can try the rotate command: http://www.mathworks.com/help/matlab/ref/rot90.html