Drop

Returns a new image with pixels removed from one edge, shrinking the canvas by that amount. dropLeft(n) removes the first n columns from the left, so the width becomes n pixels smaller. dropRight, dropTop and dropBottom do the same for the right, top and bottom edges respectively.

Examples

Using this image as our input:

 // remove the leftmost 100 pixels
image.dropLeft(100)

 // remove the rightmost 100 pixels
image.dropRight(100)

 // remove the top 80 pixels
image.dropTop(80)

 // remove the bottom 80 pixels
image.dropBottom(80)