[PROJ] Unitconvert after topocentric conversion

[Javier Jimenez Shaw]

Thanks Even!

So the syntax was clearly wrong. Should it fail, instead of run just the
first step?

On Mon, 9 Feb 2026 at 18:54, Even Rouault <even.rouault at spatialys.com>
wrote:

> Hi,
>
> just a syntax issue : replace +pipeline with +proj=pipeline
>
> Even
> Le 09/02/2026 à 14:06, Javier Jimenez Shaw via PROJ a écrit :
>
> Hi
>
> I would like to compute the difference in a topocentric system (ENU) from
> points in geocentric coordinates... with the output in millimetres.
>
> echo 4000000.0000 300000.0000  5000001.0000 | cct +pipeline +step
> +proj=topocentric +X_0=4000000.0000 +Y_0=300000.0000 +Z_0=5000000.0000
> +step +proj=unitconvert +xy_in=m +xy_out=mm +z_in=m +z_out=mm
>         0.0000         0.6232        0.7820           inf
>
> But that is exactly the same output if I do not do the unit conversion.
>
> echo 4000000.0000 300000.0000  5000001.0000 | cct +pipeline +step
> +proj=topocentric +X_0=4000000.0000 +Y_0=300000.0000 +Z_0=5000000.0000
>         0.0000         0.6232        0.7820           inf
>
> Am I doing something wrong?
>
> Thanks.
>
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