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Historic Maps on your GPS
Posted by: Neil in West Jersey
Date: February 22, 2010 03:48PM
I just traded up from a Garmin eTrex to a Magellan Triton which has the ability to store & display maps using an SD card. One of my first experiments was to load an 1895 topo map showing structures onto my GPS. It is a multi step process, but once you get the hang of it there is no more need to stry to stretch and skew maps in Google Earth and then manually enter coordinates.

If anyone is interested I will explain the process.

Here is the screen shot of what I came up with. I am very excited to use this in the field!



http://freewebs.com/neilinwestjersey




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Re: Historic Maps on your GPS
Posted by: LabradorBob
Date: February 22, 2010 05:01PM
Very nice,let us know how it works,if you go to a spot!

Harold Reese



Missouri




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Re: Historic Maps on your GPS
Posted by: El
Date: February 22, 2010 11:50PM
I would be very interested in the process you use Neil.

Thanks, El

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Re: Historic Maps on your GPS
Posted by: rbholt80
Date: February 23, 2010 01:47AM
i would like to know also.
i have marked way points on google earth then transferred them to my garmin so that they would show up on any map i use but i would love to actually have the old topo maps in the field showing my points. that would give me a road map card with my points, a new topo card with my points and then one card with the actual old topos.
i look forward to learning this trick.

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OK here it is!
Posted by: Neil in West Jersey
Date: February 23, 2010 03:30PM
Download free "TritonRMP" from http://www.msh-tools.com/)

Open "TritonRMP"
File>Import Images
select your saved *.jpg file

enter calibration coordinates for NW corner of map (Point 2)
scroll to SE corner of map
enter calibration coordinates for SE corner of map (Point 1)

These coordinates are located in the corners of the topo maps. If the topo is broken into four quadrants, you will have to use the map grid to figure out the coordinates of the corners. I found it easier to crop the maps so that the corner lined up with marked coordinates

Then:
calibrate
Create RMP
save as *.rmp
exit "TritonRMP"

Open "VantagePoint"
Library>Browse (Maps)>Add Map>select your saved *.rmp file>view map
If all done correctly, you will be able to zoom to see the topo aligned perfectly with known highways & secondary roads.



http://freewebs.com/neilinwestjersey

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Re: OK here it is!
Posted by: rbholt80
Date: February 23, 2010 07:13PM
thanks a bunch.

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Re: Historic Maps on your GPS
Posted by: muggsc
Date: April 25, 2010 02:09PM
I like it! Very nice, seems less complicated than other ways. Which model do you have? Is one better to get?
Thanks,
Cal



Minelab Excalibur, Equinox 800

Re:Has anyone tried Neil's Method?
Posted by: El
Date: May 04, 2010 04:26PM
I'd like to but there is a lot I don't understand.

El



Edited 1 time(s). Last edit at 05/04/2010 04:29PM by El.

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Re: Historic Maps on your GPS
Posted by: jimhank
Date: August 21, 2010 01:47AM
what model triton?

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