Over the winter I got frustrated with the lack of a way to estimate slope angles (for analyzing avalanche terrain) off maps online when planing winter backcountry trips and started to write my own google maps based tool. At the moment I’m laid up with a sprained ankle so I’ve been working on improving it a ton and posted it online: http://www.hillmap.com
Curent features:
* Maps from google, usgs, and NRCan, Imagery from google and usgs
* Split screen display for comparing satellite and map data to finding the route with the least bushwhacking.
* Estimate slope, elevation and lat and long at a point.
* Estimate distance, elevation change and slope along a line or path.
* Build routes dynamically (ie you can add a few points to get a rough route and then click on the lines to add more points and refine it)
* Make notes (they show up as white pins)
* Generate a link to share or save the results like:
http://www.hillmap.com/m/agtzbG9wZW1hcHBlcnIPCxIIU2F2ZWRNYXAYox8M
(this is great for collaboratively planing trips).
* Chart elevation change and slope over the path and have the charts dynamically update as you refine the path (hit profile path in the lower left of the above link to try it).
* Generate a different resolution printable page of the current field of view using usgs or NRCan map tiles.
Things I’m working on:
*Overlays showing avi prone slope angles.
*As many more map and types as I can find.
I apologize if this is too spamy for my first post here but I’ve long read the gear reviews and gear threads and admire the obsessively technical approach…I’d love some critical feedback on the site and what you all think it needs.
Thanks,
Ryan


