Feature Request: Local Projection

Emlid Flow & Emlid Flow 360
1

Do you have any plans integrate to app local parameters projection based on library like Proj4js ?

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Very popular request! You might search the forum a little and see if one of the existing threads matches well with your need. The bigger the thread the more recognition!

4

I’ve seached the forum and find NTRIP and Coordinate Systems
No replies and will be closed after 10 days.
I remembered the following that can help:
Standart RTCM 3.1 - added local parameters projection + MAC GG + RTN SSR (State Space Representation) messages (1057-1068)

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Here some helpful links:

https://mapbasic.ru/msksolutions

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That will be good help for some, but I am very familiar with local coordinates in a couple of respects that is not shown. I am not sure which one you are referring to. There are β€œlocal” EPSG’s which are the standardized coordinate systems for zones or regions and there are grid systems which may or may not be derived from those EPSG projections. Usually they are a little different because they have been localized. A third would be a totally custom coordinate system where the X,Y matches no known projection and must be aligned to. One more I can think of is a survey or design that has a scale factor. This also causes folks who use Lat/Lon or directly translated State Plane issues.

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Here is β€œ7 parameters local calculation” based on difference of EPSG and local coordinates
For example it realised in Calson SurvCE - Localization (p.178)

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I think the key here is the localization. This allows the use of any X,Y values regardless if they are on a particular projection or not.

Others have requested different datum to collect from and even direct projection translation in the software, but I think that is a mistake because it makes the system so much more complicated. Just shoot from wgs84 and localize to generic X,Y.

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Hi @arkeston,

Thanks for the request! As Michael said, it’s rather popular. I’ve replied a similar question here:

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This topic was automatically closed 100 days after the last reply. New replies are no longer allowed.

12

Hi Vlad,

It’s been a long time since you requested this feature, but I have an update for you. Our free mobile app ReachView 3 supports working in many various coordinate systems. We don’t have a localization feature yet, but it’s also possible to set up a custom coordinate system with known parameters. You can try it and don’t hesitate to ask questions!

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13

I wish I had time to look into this more. They may be the data needed in our Topcon GC3 localization files that I could use…

15

Hi Michael,

Yep, you can take localization parameters from Topcon and input them into ReachView 3.

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