Apparently within the geography community (and I expect some other places) this trick is well known, but it was new to me and so thought it worth sharing. Using the free Google Maps Image Cutter developed at University College London you can cut up very large images into ’tiles’ and then use the standard Google maps viewer interface to pan and zoom on it. The default is for the picture to wrap, but if you look at the source of the HTML page, change one value prevents this, as can be seen in the example I tested it on here.
Many of the pages I readpointed out that a service like Zoomify already does this. True enough, but a) other than for the most basic package, that is a paid for service b)Zoomify is a Flash-based approach, sometimes that’s not what you want c) this seems to me to give me more control, and can you ever have enough options on how to do things like this? Isn’t that part of what we educational technologists are supposed to do – listen to needs and respond with appropriate solutions?