Find CRS (coordinate reference system) based on known location and coordinates?

Question

Is there any tool or any tutorial which would help me to figure out CRS (coordinate reference system) from related information?

In my particular case I know only the system is in meters, has origin (probably of zone) at E 91°30' and N 50°20' (not 100% sure about exactly 50°20') and it is presumably commonly used in Russia.

I would be glad for general solution if any.

Does this help http://gis.stackexchange.com/questions/7839/identifying-coordinate-system-of-shapefile-when-unknown or is there no shapefile or feature class involved? — PolyGeo, Oct 21 '14 at 02:46

score 4 · Accepted Answer · edited Apr 13 '17 at 12:33

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Based on Identifying Coordinate System of Shapefile when Unknown? it directed me to a tool which is very helpful to find relevant CRS which is exactly I was hoping for:

http://www.epsg-registry.org/

The result in my case: enter image description here

edited Apr 13 '17 at 12:33

Community

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answered Oct 21 '14 at 03:26

Miro

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score 3 · Answer 2 · answered Oct 21 '14 at 05:34

My preferred solution is to build a custom CRS in QGIS, and test if sample coordinate points are placed correctly compared to Openstreetmap or Google imagery from the openlayers plugin.

In Russia, Gauss-Krüger transverse mercator based on the Krassnowsky ellipsoid is common use. The projections named Pulkovo are usually 3 or 6 degrees wide, with a false Easting of 500000m to the central meridian. Some CRS put the zone number before the false Easting, like 16500000 for zone 16 arond the 48° meridian.

False Northing is not used, perhaps some leading numbers are simply stripped of for the local coordinates.

score 2 · Answer 3 · answered Oct 21 '14 at 04:40

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I recommend ProjFinder. The principle is "zoom on the place you are looking for and the tool will provide the supposed projections".

You can also use epsg.io and search Russia to sort out possible projections

answered Oct 21 '14 at 04:40

ThomasG77

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ProjFinder looks great though it doesn't contain projections which I got when searching through epsg-registry.org and actually these were the ones I wanted in my particular case. http://epsg.io/ looks awesome, the only thing is I can't figure out if/how is possible to search through coordinates. – Miro Oct 21 '14 at 06:54
THANK YOU! ProjFinder is the one – dmeu Oct 07 '20 at 16:39

score 1 · Answer 4 · edited Feb 26 '16 at 11:37

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I also used Projfinder and I found it is very useful.

But asking the producer is the best.

I worked on a project in South Africa, I found a suitable CRS but after few weeks the customer gave me the name of the right one, and it was different. Probably in Projectfinder is not available a full list of CRS like as in www.epsg-registry.org

edited Feb 26 '16 at 11:37

wittich

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answered Feb 26 '16 at 11:10

Carlo T.

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Find CRS (coordinate reference system) based on known location and coordinates?

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