title: How to do a horizontal shift of an image in MATLAB?
body: <p>I have an image that I have converted into a double matrix. I want to shift it horizontally, but I am not sure how to do this. I try to manipulate the position, but it turns out that I am only manipulating the color. </p>
  
  <p>Is there a way that I can reference the pixel position instead and then add a constant to perform a shift?</p>