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Old 09-25-2013, 08:18 PM   #1
lucknau OP
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Geospatial/Georeferenced PDFs

A little while back, after finding the Capitol Forest OHV, I started obsessing about GPS enabled (a.k.a. Georeferenced, a.k.a. Geospatial) PDFs... because they're awesome!

So I downloaded maps from every nearby OHV park that I could find, and GPS-ified them.

If anyone wants to give them a try, they're available here:

Dropbox

and here:

Google Drive

Mileage may vary, on how well your phone likes these sites. Sorry about that.

These are the maps I've posted so far:

Cle_Elum_OHV_Trails_East_GPS.pdf
Cle_Elum_OHV_Trails_West_GPS.pdf
DevilGulchMissionRidge_GPS.pdf
FoggyDewOHV_GPS.pdf
GiffordPinchotBerryFieldsOHV_GPS.pdf
GiffordPinchotHighLakesBlueLakeOHV_GPS.pdf
GreenMountainStateForest_GPS.pdf
HuckleberryFlatsOHV_GPS.pdf
JonesCreekOHV_GPS.pdf
LaDeeFlatsOHV_GPS.pdf
MadRiverORV_GPS.pdf
McCubbinsGulchOHV_GPS.pdf
NicolaiOHV_GPS.pdf
PinemontOHV_GPS.pdf
PostCanyonATV_GPS.pdf
ReiterOverallMap_GPS.pdf
RockCreekOHV_GPS.pdf
TahuyaStateForest_GPS.pdf
TillamookStateForestOHV2010_GPS.pdf
TillamookStateForestOHV2014_GPS.pdf
UpperNestuccaOHV_GPS.pdf
WalkerValleyORV_GPS.pdf

The phone app that runs these is called Avenza PDF Maps (available at the Apple Apps Store and at Google Play, or via their webpage, here: http://www.pdf-maps.com/get-pdf-maps).

If anyone wants others, just let me know, and I'll build em.

Oh, and if you notice that one (or more) of them isn't anywhere near accurate, and you happened to record a GPS track of your ride, shoot it over to me and I'll try to fix it.

As far as I can tell, all of these maps are in the public domain, and this is thus legit. Let me know if I got it wrong. I don't want The Man comin' after me.
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lucknau screwed with this post 10-11-2014 at 08:08 PM Reason: just gonna make this the flag post, so it'll probably change a lot if the thread doesn't fizzle out
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Old 09-25-2013, 09:44 PM   #2
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Tahuya would be great as well, thanks!
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Old 09-25-2013, 11:14 PM   #3
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Quote:
Originally Posted by idc22 View Post
Tahuya would be great as well, thanks!
Done, and uploaded!


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Old 09-25-2013, 11:39 PM   #4
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Wow, just downloaded the app and your Tahuya map. That's some awesome stuff! Thanks!

Any chance you want to do Taneum or mad river orv
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Old 09-26-2013, 12:52 AM   #5
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Android App?

It looks like the android version of app was beta for a while, no longer available. Maybe a release will be available soon.
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Old 09-26-2013, 12:56 AM   #6
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Quote:
Originally Posted by wannatard View Post
Wow, just downloaded the app and your Tahuya map. That's some awesome stuff! Thanks!

Any chance you want to do Taneum or mad river orv
Sure! If I can find the PDFs, I'll do it tomorrow afternoon.


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Old 09-26-2013, 12:57 AM   #7
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Quote:
Originally Posted by IDRIDR View Post
It looks like the android version of app was beta for a while, no longer available. Maybe a release will be available soon.
Looks like there's another app, called TerraGo, that might work for Android.


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Old 09-26-2013, 08:47 AM   #8
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Awesome! Thank you very much.

Walker valley perhaps?

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Old 09-27-2013, 03:36 PM   #9
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Okay, I uploaded Walker Valley and Mad River. The Mad River map was a nicely made PDF, but not so accurate. If you give it a go, let me know how it works out. If you feel like recording a gps track of your rides, I might be able to use that to make it more accurate.

Enjoy!


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Old 09-27-2013, 03:37 PM   #10
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P.S. Taneum is still in the works.


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Old 09-27-2013, 07:58 PM   #11
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Quote:
Originally Posted by lucknau View Post
Okay, I uploaded Walker Valley and Mad River. The Mad River map was a nicely made PDF, but not so accurate. If you give it a go, let me know how it works out. If you feel like recording a gps track of your rides, I might be able to use that to make it more accurate.

Enjoy!


===@===
Thanks! If all goes as planned I'm heading out there on Sunday. I'll let you know how it went and send you the track log.
How exactly are you putting these together? Do you just match features to coordinates in the app?
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Old 09-28-2013, 11:28 AM   #12
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In Acrobat 9, I just eyeball it, finding intersections or geographic features that look accurate compared to the openstreetmap database, and then tag them with coordinates. In Acrobat, you're limited to four GPS points, for getting the georeferencing right. In Acrobat 9, to add georeferencing, the menu choice is Tools/Analysis/Geospatial Registration Tool. The process is really straightforward, and when you finish tagging your points, the coordinate system to choose (or the one I choose, anyway) is WGS 1984 UTM Zone 10N. The Chelan area is on the east edge of Zone 10N, so Zone 11N might also work.

I've also made maps in ArcMap, where the tagging process will warp the map until it becomes more geographically accurate. In ArcMap, you can use as many GPS points as necessary, to get the map to jibe with reality. The arcmap versions take a hit, though, in terms of image quality, when they get uploaded to your phone. There may be some ArcMap gurus out there who can get around this, but I haven't found em yet.




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Old 10-25-2013, 07:47 AM   #13
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Originally Posted by IDRIDR View Post
It looks like the android version of app was beta for a while, no longer available. Maybe a release will be available soon.
Update: Avenza just released an official version for Android, and it should be available on Google Play now.
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Old 10-25-2013, 08:33 AM   #14
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I tried to open the TSF and the Nestucca docs in both Avenza and TerraGo. Both apps tell me they can't open the documents.
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Old 10-25-2013, 10:17 AM   #15
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Lucknau, thanks for doing this, I like the idea.

I downloaded the PDF Maps app for android and imported the maps. The newer Tillamook State Forest map works great. But on the other maps, I get this error when I open them.

"Georeferencing on this map cannot be read. Functions that require coordinates are disabled."

It will still open the map, but the "Find me on the map" type functions don't work. Any suggestions? I'm wondering if when you created these if there was a different export option or something you did on the TSF that allows it to work? All the maps seem to have the Geospacial information when I pull them into Acrobat 9 on my computer, so it's somethign to do with the format/use/configuration on Android devices I'm guessing.

FWIW - I also tried the "TerraGo" software for android, but on all the maps when I try to import them I get " is not a genuine Terrago GeoPDF. Terrago Mobile can only open genuine GeoPDF's."
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