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The EPSG database http://epsg-registry.org/ contains also "Area of Use" descriptions. From the documentation: Area of Use The area of use is a description of the geographic applicability of certain entities. It is applied toCoordinate Reference Systems, Datums and Coordinate Operations (Conversions, including Map Projections,and ...


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As #mkennedy and @AndreJ suggested, I tried simply georeferencing each map of the Spezialkarte der Osterreichisch-Ungarischen Monarchie on a modern 1:25000 map of Croatia: the results are precise enough for my goals. I attach a picture so that I can give you an idea. I also tried using @Wernfried Domscheit projection, but the map is georeferenced in a ...


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Same as mkennedy, I suggest to georeference against a map of today, like OpenStreetMap or Google satellite. Road junctions, railway crossings and river bridges have not moved over the time. On the other hand, surveying has improved a lot. Keep in mind that they had no satellite imagery, and many things were just collected by sight. The reference meridian of ...


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Have a look at this page: PROJ.4 - General Parameters I think at least partly the projection string is this one: +proj=latlong +pm=17d39'37.5"W +a=6376033 +b=6356354 +rf=324 I am not a geodesist, so I don't know if this definition is complete. But it could be a starting point. btw, you can list available datums, projections, etc by cs2cs -lP cs2cs -le ...


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According to Proj4js project site the tool has only a very limited number of predefined projections. You have to define the projection by yourself. Check the documentation. For proper (i.e. accurate) transformation you have to download the grid-shift files CHENYX06_etrs.gsb and CHENYX06a.gsb from Swisstopo. Here are the definitions for all combinations: ...


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Looks like there is an error in the statement at the link you provided, with the SRID being 94978, it should be: INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4978, 'epsg', 4978, '', 'GEOCCS["WGS 84",DATUM["World Geodetic System 1984",SPHEROID["WGS 84",6378137.0,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","...


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Proj.4 documentation about "units" is at https://trac.osgeo.org/proj/wiki/GenParms#Units Listing the supported units with cs2cs gives this result: cs2cs -lu km 1000. Kilometer m 1. Meter dm 1/10 Decimeter cm 1/100 Centimeter mm 1/1000 ...



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