I would like to make a web mapping application where a user can import their own x-y-z data file, then the application applies filters that I write to it, contours the resulting data, then displays the results and exports to common GIS formats.
I have medium-level web programming skills (PHP, MySQL, etc.).
My question is this: what tools would be the best way to get my end product? Would something like MapScript work? Or do any commercial solutions come to mind?
Thanks for any suggestions anyone might have.