I would go with the Lineup box like Jim did show as I think it is the simplest option. One other option (more complicated) is to use Graph Box and add images to it
Names Default To Here(1);
image1 = New Image("$SAMPLE_IMAGES/windmap.png");
image2 = New Image("$SAMPLE_IMAGES/black rhino footprint.jpg");
image3 = New Image("$SAMPLE_IMAGES/tile.jpg");
image4 = New Image("$SAMPLE_IMAGES/pi.gif");
nw = New Window("View Image",
gb = Graph Box(
FrameSize(500, 500),
X Scale(0, 100),
Y Scale(0, 100),
SuppressAxes(1)
)
);
fb = nw[FrameBox(1)];
fb << Add Image(image(image1), bounds(top(0), Left(0), bottom(50), Right(50)));
fb << Add Image(image(image2), bounds(top(0), Left(50), bottom(50), Right(100)));
fb << Add Image(image(image3), bounds(top(100), Left(0), bottom(50), Right(50)));
fb << Add Image(image(image4), bounds(top(100), Left(50), bottom(50), Right(100)));
img = fb << get picture;
img << save image("$TEMP/pic.png", "png");
nw << close window;
At least one more technique can be found from this post Merging/stitching images
-Jarmo