measure slope/plan trips on google maps

Thanks Ryan.

Being that its still dry (cold and windy this week) in the Sierra's I've been doing more map skiing than I'd like and recently looked up this thread to find hillmap again. I'm sure others forgot or didn't know about it.

One glitch I found: When I zoom into the area analyzed, it freezes the contour map (but highlighted areas zoom in and out still). Any idea why, browser maybe?

Really cool feature though.

Way cool. Thank you!

Thanks for the compliments and bug reports.

If the slope angle overlays don't work for you try it in Google Chrome. I will work on fixing it for other browsers but that is the one I use for development. It won't work for for IE <=8 due to the lack of support for canvas.

very cool tool, ryanb!
i'm testing all my favorite spots
thanks very much!

This tool keeps getting better and better.
The convenience is key.
I've done a lot of similar analysis in GIS, but this interface and ease of use is paramount.
Thanks!

Hey All,

Mattj and of caltopo has developed (and shared) a great new slope overlay layer for the US as well as higher quality scans of the USGS and FS maps. I've wired these into hillmap (+ drag and drop GPX import and overlaying map layers) and you can now do things like this:

www.hillmap.com/m/ag1zfmhpbGxtYXAtaGRychALEghTYXZlZE1hcBia8REM

Which I have been finding useful with touchy recent snow conditions. (satalite+.5 opacity fs map + 1 opacity caltop slope overlay. Tour was yesterday, recommend heading further west on the way back to tronsen at the end to avoid dense trees.)