topic MTM CSRS97 to CSRS2010 in AutoCAD Map 3D Forum

MTM CSRS97 to CSRS2010

David.WylieEMFWL — Tue, 04 Oct 2022 14:30:38 GMT

Working in Ontario with coordinate system CSRS MTM-9 NAD83(CSRS)/MTM Zone 9, which it referenced to the ITRF 1997, (CSRS97), is there a way to convert the epoch to CSRS 2010? Or even, for that matter, make it clear what the epoch of the projection is?

Re: MTM CSRS97 to CSRS2010

Pointdump — Tue, 04 Oct 2022 15:33:52 GMT

Hi David,
"... is there a way to convert the epoch to CSRS 2010? Or even, for that matter, make it clear what the epoch of the projection is?"
If Ontario has a Grid Shift File (GSB), they're not listing it >>>Here<<<. Maybe you could e-mail them.
Dave

Re: MTM CSRS97 to CSRS2010

David.WylieEMFWL — Tue, 04 Oct 2022 15:41:43 GMT

Hmm, I'll follow up with NRCAN. Getting the Grid Shift File is one issue I believe, the other is distinguishing between Epochs.

Re: MTM CSRS97 to CSRS2010

ChicagoLooper — Tue, 04 Oct 2022 16:25:37 GMT

Hi @David.WylieEMFWL

Is your site in Ottawa? If not, then where?

Re: MTM CSRS97 to CSRS2010

David.WylieEMFWL — Tue, 04 Oct 2022 17:40:07 GMT

yes in Ottawa. We use Civil 3D as a storage and editing system for project site base mapping, including topographic, planimetric and boundary information.

Re: MTM CSRS97 to CSRS2010

ChicagoLooper — Tue, 04 Oct 2022 18:09:09 GMT

It appears the 1997 and 2010 epochs only apply to Nova Scotia. If you are willing to share your data and provide an explanation of what you're trying to achieve, the forum will gladly evaluate your situation.

Re: MTM CSRS97 to CSRS2010

David.WylieEMFWL — Tue, 04 Oct 2022 18:48:52 GMT

OK thanks. I'll put together a summary explanation and post. will take a day or two though