Irish National Grid TM65 is not depreciated

Hi ​@siobhan_mcd,

If your input data has the Irish National Grid TM65 set on it, it should not be necessary to set the coordinate system in the workspace - it will carry through from source to destination.

If the data has no coordinate system set on it, you can set it to EPSG:29902 using the EsriReprojector, by setting both source and destination coordinate systems to TM65_Irish_Grid:

Thank-you Dave.

The problem is that the incoming data will be part of a mutli-stage workflow (lots of data with various CRS etc).
We need to be able to output all the data from the workflow in TM65. I can not see any way of setting this writer CRS to TM65 (EPSG 29902)? I am probably missing something really obvious here? 

Hi ​@siobhan_mcd great question, sorry about the confusion! You will need to make sure that the coordinate system is set correctly on all streams of your data before arriving at the writer. 
 

if some data in your workflow already has the correct CRS then you don’t need to set it again. For those that don’t have a CRS set you can set it like in the screenshot Dave provided. If you need to change the CRS from one to another then you will need to reproject by setting the source to the data source coordinate system and the destination as TM65_Irish_Grid. 
 

There are a few reprojection engines in FME. The EsriReprojector has the latest definition for TM65_Irish_Grid, you may not find it as an option in the others. 
 

Hope this helps!

​@daveatsafe , ​@evieatsafe : Would it be possible to set EPSG:29902 as not deprecated, because it is still the de facto CRS for pretty much all organisations across the Republic of Ireland, including the national environment agency and the national water board!
Like ​@siobhan_mcd, I have had many attempts as well in recent months to avoid getting warnings, or simply to be able to set my coordinate system to EPSG:29902. I’ve even tried setting up a Custom Coordinate System to be able to do this, but without much success.

As I understand, most of this applies to EPSG:29903 for Northern Ireland as well (although I have hardly worked with that)

Hi ​@siobhan_mcd, ​@arnold_bijlsma,

Deprecated coordinate systems can still be set within FME, by typing the name directly into the Coordinate System box in the reader/writer parameters or Reprojector/CsmapReprojector transformers.

I think the best approach would be to use the deprecated coordinate systems TM1965/b.IrishGrid or EPSG:29902 to avoid conflicts with the active coordinate systems. I am attaching a configuration file that will ensure the correct EPSG code and/or Esri WKT is used when writing out the data. 

Please unzip the attached file into your Documents\FME\CoordinateSystemExceptions folder, then restart FME to have it take effect.