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Esri software does not have a built-in transformation to convert between NAD 1983 and NAD 1983 CSRS in Ontario. The Ontario Ministry of Natural Resources and Forestry provides an NTv2 file to convert between NAD 1983 (original) and NAD 1983 CSRS. You can download it from COSINE. You have to apply, but it's not onerous, and the NTv2 files are free to ...


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Redefining the original file as WGS84 does the trick at least for accuracy for any practical purpose. The following was sent by a customer care rep at ESRI... 1] ITRF 2008 is a datum definition that takes continental drift into consideration. 2] The WGS 1984 definition used in ArcGIS Desktop is the original definition, and has not been updated to take ...


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Is this data sourced from India or Nepal? The EPSG Geodetic Parameter Dataset lists two transformations that apply to Nepal. It's difficult to recommend something in particular because the geographic coordinate reference system (datum) that you have just lists the ellipsoid information. tfm 6208 is actually for Nepal 1981 to WGS 1984. The ellipsoid is a ...


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You can put the WKT text into a text file, and run gdalsrsinfo on it: gdalsrsinfo test.txt >out.txt PROJ.4 : '+proj=lcc +lat_1=26.666667 +lat_2=29.333333 +lat_0=28.002808 +lon_0=84 +x_0=500000 +y_0=500000 +a=6377301.243 +b=6356100.230165384 +units=m +no_defs ' The ellipsoid parameters look very much like Kalianpur 1962, EPSG 4145: +proj=longlat ...


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Finding the center is not as simple as you think. take an example square in EPSG:4326: Transform it into World Mercator, and the center is somewhere else: In Lambert conformal conical, it is not yet a rectangle: And same for azimutal equidistant: So be careful if you think of a "simple" rectangle and its center point. The world is not a plane! My ...


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Vincenty's formula (ellipsoid based) is more accurate than haversine (sphere based). Also, lat and long are usually expressed in degree, but your coordinates are not in 0-180, therefore you could be in another system than expected.


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WGS84 is a coordinate system, but it's a Geographic coordinate system, which means it's referenced to a sphere (or ellipsoid). Note that it's also a datum, so if the full name you see under the coordinate system properties is WGS84, that's GCS, but you may also see WGS84 as part of a coordinate system name. You want a Projected coordinate system, which is ...



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