Question

gnomonic custom projection

  • 14 September 2018
  • 1 reply
  • 5 views
nicholas
Rank
Badge +10

I have a raster representing rainfall intensity as detected by radar.

The image is in a custom gnomonic projection. I want to reproject into a Lat/Long GDA94 projection.

How do I define a new custom projection in FME?

The projection information I have been supplied with, in a .map file is;

IDR663.map

66 Brisbane (128 km)

projection = Gnomonic

center_longitude = 153.24001

center_latitude = -27.71810

lon0 = 151.93095

lat0 = -28.85765

lon1 = 151.95828

lat1 = -26.55640

lon2 = 154.53113

lat2 = -26.55632

lon3 = 154.55867

lat3 = -28.85755

Thanks!

1 reply

chrisatsafe
Rank
Badge +2

Hi @nicholas,

You can create custom coordinate systems for use in FME, using this interactive form. You can start from an existing FME Coordinate system or Esri Projection WKT. If neither are selected, you will start with a clean slate. You will then need to add the custom coordinate system to FME by following the instructions in the About Adding Custom Coordinate Systems Documentation.

 

Alternatively, you can manually customize an existing coordinate system from an existing coordinate system by following the instructions listed on the About Custom Coordinate Systems Documentation.

I hope this helps.

- Chris

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