A Useful map app?

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Lucas
Posts: 837
Joined: Tue Jul 29, 2014 11:55 am

A Useful map app?

Post by Lucas » Tue Nov 04, 2014 11:26 am

http://www.hillmap.com/

A Useful map app?

https://www.youtube.com/watch?v=ntz9_ecS5hI

The vid has tips.
We travel the Milky way together, trees and men. - John Muir

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Matt Markworth
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Re: A Useful map app?

Post by Matt Markworth » Tue Nov 04, 2014 7:46 pm

The automatic side-by-side is pretty cool. With a quick test, it seems like the aerial map side can zoom in much farther than the topo side, not sure why it doesn't allow the topo side to keep zooming.

Matt

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Lucas
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Re: A Useful map app?

Post by Lucas » Wed Nov 05, 2014 12:57 pm

Matt Markworth wrote:The automatic side-by-side is pretty cool. With a quick test, it seems like the aerial map side can zoom in much farther than the topo side, not sure why it doesn't allow the topo side to keep zooming.

Matt

The scales on topos are pretty coarse so that may be it.
We travel the Milky way together, trees and men. - John Muir

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Don
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Re: A Useful map app?

Post by Don » Wed Nov 05, 2014 2:54 pm

Matt/Lucas-
The resolution of the aerial map side is in this case superior to that of most standard contiguous US topo maps. In Alaska, it would be even more apparent, as our topos are 1:63,360 primarily due to the large area to be covered, the low populationi density of most of that area, and cost issues of a 1:24K or 1:12K scaling.

Almost in a similar vein, one of the products we created in the GIS branch of Grand Canyon's Science Center was a merged DRG/DOQQ (digital version of a topomap with contours, roads, boundary features selected---then merged with a digital orthophoto quad, which is an aerial photo co-registered to the topo features). In it's hard copy version, it was an aerial photo with contours and such overlaid...for anyone familiar with navigating on the basis of a topo, having the aerial imagery underlaid was a wonderful addition...I really think there's a commercial opportunity there. The resolution of the aerial imagery we were using (DOQQs) was sufficient to easily identify individual trees, even shrubs where contrast permitted.
We had DRG/DOQQs for the entire Grand Canyon National Park, which when we automated the project, was for the most part, a push the button operation.
-Don
Don Bertolette - President/Moderator, WNTS BBS
Restoration Forester (Retired)
Science Center
Grand Canyon National Park

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View my Alaska Big Tree List Webpage at:
http://www.akbigtreelist.org

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