@rhoutman put together an example and I'll do it, the key information in the other post is the screen shot of data-type, width, height, offset, gap, no. of images, little-endian etc. but what is missing is an example file.
readBin() does everything needed, you read raw numeric values from bytes in the .raw file, but then push them into a matrix() in the right order. I don't have any .raw files, but this is exactly what so many other raw-binary format files use it's a good skill to learn.