Author Topic: Transformation from EPSG3857 to StatePlane  (Read 533 times)

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ronjonp

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Transformation from EPSG3857 to StatePlane
« on: June 24, 2019, 10:41:30 AM »
Full disclosure: I know just enough about C3D to be dangerous :)

This may be a easy question to answer ( or not ) but if I have a geo-referenced aerial in EPSG3857, how can I bring this information into C3D transformed into a State Plane say ( NSRS11.NV-EF). I've done some Googl'in but haven't found anything I can wrap my head around.

Thanks,
« Last Edit: June 24, 2019, 10:44:51 AM by ronjonp »

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ronjonp

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Re: Transformation from EPSG3857 to StatePlane
« Reply #1 on: June 24, 2019, 11:48:06 AM »
Nevermind .. I ended up opening the exported image into QGIS, changing to desired state plane then exporting a new geo-referenced image. If anyone has a 'smarter' way to do this please let me know :).

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steve.carson

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Re: Transformation from EPSG3857 to StatePlane
« Reply #2 on: June 24, 2019, 12:07:40 PM »
I think you can use a Map Query on a georeferenced image. If not you could always put a rectangle around the image and Map query that. If the resultant rectangle has a skew to it, you may need to use Raster Design to skew it.

jvillarreal

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Re: Transformation from EPSG3857 to StatePlane
« Reply #3 on: June 24, 2019, 12:35:00 PM »
You could also create a custom coordinate system using the "Planning and Analysis" workspace.
Map Setup tab > Coordinate System > Create

It would allow you to automatically reproject map data to/from standard geographic coordinate systems.

ronjonp

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Re: Transformation from EPSG3857 to StatePlane
« Reply #4 on: June 24, 2019, 12:54:36 PM »
Thanks guys .. I'll give it a go!

Windows 10 x64 - AutoCAD /C3D 2020

Custom Build PC