[Proj] ECEF to UTM - no sure how to do this

Antoine Cottin a.cottin at carbomap.com
Tue Mar 8 15:18:42 EST 2016

Hello list,

I’m trying to convert some ECEF data to UTM zone 33N (WGS84) in a C++ application. My code is working but the results are not correct as the data are skewed along an axis.

I’ve adapted the example code available on the wiki about pj_transform but wonder if there is anything special to consider in term of coordinates order for the ECEF input as the X,Y,Z might not be obvious? and I believe it’s the reason for the skewed results...

Any pointer welcome.
Best regards.
Dr Antoine Cottin
Chief Technology Officer
Carbomap Ltd.
Edinburgh Centre for Carbon Innovation
High School Yards
Edinburgh EH1 1LZ
+44 (0)7577 444-046

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