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I am trying to project a polygon from UTM 46 N to Lambert Conformal Conic (1SP) in ArcMap using the following .proj file.

PROJCS["Lambert_Conformal_Conic_1SP",
      GEOGCS["GCS_WGS_1984",
      DATUM["D_WGS_1984",
      SPHEROID["WGS_1984",6378137.0,298.257223563]],
      PRIMEM["Greenwich",0.0],
      UNIT["Degree",0.0174532925199433]],
      PROJECTION["Lambert_Conformal_Conic"],
      PARAMETER["false_easting",2743186.0],
      PARAMETER["false_northing",914395.0],
      PARAMETER["central_meridian",90.0],
      PARAMETER["scale_factor",0.9988],
      PARAMETER["latitude_of_origin",26.0],
      UNIT["Meter",1.0],
      AUTHORITY["Esri",9801]]

However, the output coordinate system is not recognized by the program and the following error shows up

Error: Invalid extent for output coordinate system

I am unable to understand what is actually wrong with my .prj file. The definition of the projection is as follows:

Name: LCC1 (Lambert Conformal Conic - One Standard Parallel)

Spheroid: Everest Central

Meridian: 90 E of Greenwich

Latitude of Origin: 26 (Standard Parallel) False Northing: 914,395 meters

False Easting: 2,743,186

Scale Factor: 0.9988

1 Answer 1

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The problem was solved by adding ["standard_parallel",26.0] to the .proj file. The definition includes both Latitude of Origin and Standard Parallel as 26 degree. I thought defining only one would work. But it seems both of the parameters were necessary for the Lambert Conformal Conic projection.

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