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mathteacher
mathteacher
@mathteacher
Member
Joined: June 15, 2013 9:58 am
Last seen: September 24, 2026 2:51 pm
Topics: 158 / Replies: 2104
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RE: Working with LDPs

Google PMRail_GRS80 to learn more.

1 year ago
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RE: Working with LDPs

Here's the full modified .prj. My DNRGPS uses an older version of Proj4 which your stuff seems to be compatible with also. However, there are later ve...

1 year ago
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RE: Working with LDPs

WGS84 via 7-parameter Helmert These likely won't match perfectly. I used a +towgs84 string that converts HARN points to WGS84/ITRF. It looks like ...

1 year ago
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RE: Working with LDPs

You should be right on top of them.

1 year ago
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RE: Working with LDPs

My pleasure. Once you get the .prj installed, you'll be able to calculate lat/lon (and maybe height, depending) from plane coordinates. That should ge...

1 year ago
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RE: Working with LDPs

Be careful with the survey software. In DNRGPS, the False Easting, Northing are interpreted to be in Survey Feet. According to this 5-year old Trimble...

1 year ago
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RE: Server Upgrade This Weekend 2025-05-24

@wendell Seems fine now. Earlier when I tapped Add Reply or Post, the little "working" icon spun a shot bit, then disappeared with no "Success" not...

1 year ago
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RE: Working with LDPs

Nice projection. I've run some points through DNRGPS, the old quirky package from the Minnesota Department of Natural Resources. Here are the results:...

1 year ago
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RE: Server Upgrade This Weekend 2025-05-24

I am. Posts go to Revisions instead of forum.

1 year ago
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RE: Working with LDPs

If you have the .PRJ file for one of the LDPs, you should be able to upload it to the controller either directly from a computer or from a USB drive. ...

1 year ago
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RE: Working with LDPs

Look for input screens that ask for data like this Well Known Text file for Alaska Zone 4: PROJCS["Transverse_Mercator",GEOGCS["GCS_North_American_1...

1 year ago
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RE: Grid & Ground

@field-dog That's great, but be careful! The ambiguity over Trimble Access and its handling of state plane as the projection and 1 as the combined ...

1 year ago
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