Drag a .tsv topography file onto the window to see a map for it, or hit
one of the links below to use a sample file.
Don't see anything? Remember to adjust your isoline interval.
Red indicates higher elevation iso-lines; green, lower
Pitfalls
Chrome/FF only
Browser security doesn't let you use the File API when running off of disk, need to run a webserver to echo the files back to you
I think my saddle-point resolution is off, would need more time to tinker
In fact, my next step would probably be to scrap marching-squares entirely and go for some line-division or bezier interpolation for a better-looking map