Raw images

[Tuvas]

I have an image that is in a "raw" format, ei, no place markers to tell
the dimensions, just a big group of numbers. I happen to know the
dimension of this array from a different source. I would like to be
able to display it. Is there a way to do this easily? I know that
several libraries use a "raw" function, but I have little doubt that
this differs somewhat from program to program. Thanks!