Re: How to point at a spot and get relevant information?

> > > Dear all, > > > > Anybody knows how to write a graphic plotting code such that when users > > point > > at that spot, they can get the information relevant to that spot? Thanks > > in advance. > > that'd be pretty intense. to do this feasbly with PHP, you'd have to analyse the picture first with the GD library. but to allow the user to interact with this, your gonna have to store all values into JavaScript. the users interaction can't be done with PHP, as that's all client side. this would result in possibly huge amounts of code to download, and fairly high processing time. i don't know if there's a javascript alternative, or maybe some other technology someone's made. this wouldn't be so hard in flash tho...