measure slope/plan trips on google maps

Cool, I got basic path sharing setup, hit the share/save link on the lower left to generate a link like this one:

www.hillmap.com/m/agtzbG9wZW1hcHBlcnIPCxIIU2F2ZWRNYXAY6QcM

I'm going to try to clean up the ui a bit next and test it to make sure it isn't breaking on other browsers etc, after that maybe add notes and better maps,  improve the path editing, plots, gps import export and the slope heatmap (all as i have time of course).

Edit: found a bug that limits the number of points save will work for, will fix it tonight.

I sprained my ankle at the climbing gym last night and am now couch bound and this has given me a some time to work on this. I added a lot of features:

You can chart elevation and slope of travel for the whole trip (hit profile on the lower left).
You can move the pins while profiling and it will update the charts.
You can click on a blue line to add a pin in the middle of the route if you need to refine the route.
You can make notes, they show up as white pins.
The saving bug is fixed.

Check it out:

www.hillmap.com/m/agtzbG9wZW1hcHBlcnIPCxIIU2F2ZWRNYXAYox8M

Dude, that's just great.
Does everything just right.

The only slight improvement I can think of would be to be able to zoom in a bit closer to the map so when you 'point' click a narrow couloir you know that you're getting the slope angle for the middle, not the steeper sidewalls.

Brilliant & simple interface. Love it

Thanks Jake!

The couloir thing is kind of tricky if they are narrow enough to be near the resolution of the source data which I think must be 10-30 m NED data for most of the US because the elevations i use are interpolated by google and the walls may throw off by their smoothing...I think routing a path down the couloir and looking at the slope of that using the profile tool gives the best estimate of what is going on. That said, I am working on getting some better topo map tiles (mytopo.com and Microsoft Research's USGS scans) which will let you zoom in further and visually inspect things and I may eventually do my own interpolation of the NED data.

Great tool and thanks for sharing.

Thanks Scott.

More features I've added:
* USGS Topos maps and aerial images from Microsoft Research Maps Webservices
* Printable display of USGS maps from the above (still working on the ui for this but if you play with it
you can get some good results).
* Switchable dual map views.
* An about/how to dialog.