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I am trying to convert "GEOGCS["GCS_Hartebeesthoek_1994",DATUM["D_Hartebeesthoek_1994",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]" to Transverse Mercator (CM). This is South African Data. I am trying to migrate from ESRI-Shape file to GE Smallworld through FME and the data is not falling correctly in Smallworld. Request support.

Hi,

It could be a few things I could think of.

1. reglardles whether you have prj file or not, you definitelly need to add a correct coordinate system to shp reader (in your case: Hartebeesthoek94.LL). After that Reprojector to TM....

2. While migrating it is necessary to set coordinate system of SW application to correct one (in your case Transverse Mercator). You do that in Tools -> Options -> Geometry calculations.

let me know if it works..

Cheers


When reading or writing Smallworld data, FME uses the Smallworld 'world' coordinate system, which is usually defined in millimetres or centimetres - see this article under Geometry is Incorrect for more details. Most FME projected coordinate systems are defined in feet or metres. So you need to create a custom coordinate system for FME for your Transverse Mercator with the appropriate units of measure. Dave Campanas has just created a tool to make it easier to do this, so here are the general steps:

  • In FME Workbench, under the Tools menu, browse the coordinate systems and find one that is close to the one you want to create.
  • Then select Properties. Scroll to the bottom of the Coordinate System Properties dialog and copy the Esri WKT Description
  • Go to Dave's Define Custom Coordinate System page.
  • Paste the Esri WKT Description into the panel on the Define Custom Coordinate System form. Proceed from there. You'll need to change the units of measure and you'll also have to change the False Easting/Northing as these are in the units of measure.
  • Download the result and copy it into: C:\\Users\\<user>\\Documents\\FME\\CoordinateSystems

or a shared resource folder: https://docs.safe.com/fme/html/FME_Desktop_Documentation/FME_Coordinate_Systems/Workbench/coordinate_sys_custom_about.htm


The Spatialbiz FME plug-in has additional options for coordinate system conversion into SmallWorld using FME.

See Spatialbiz plug-in for more information.


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