[Proj] Problems with EOV for Hungary (1972 Egyseges OrszagosVetuleti)
Jean-Claude REPETTO
jrepetto at free.fr
Tue Sep 22 10:25:58 EST 2009
Roger Oberholtzer wrote :
>
>
> This looks promising. So, I have now tried:
>
> from = pj_init_plus(
> "+proj=latlong "
> "+ellps=WGS84");
>
> to = pj_init_plus(
> "+proj=somerc "
> "+lat_0=47.14439372222222 "
> "+lon_0=19.04857177777778 "
> "+k=0.99993 "
> "+x_0=650000 "
> "+y_0=200000 "
> "+ellps=GRS67 "
> "+units=m "
> "+towgs84=52.684,-71.194,-13.975,-0.312,-0.1063,-0.3729,1.0191 "
> "+no_defs");
>
> pj_transform(to, from, 1, 0, &le, &ln, &la);
>
> And I see no difference at all. I use +towgs84 elsewhere, so I know it
> works like this. But, as I said, I see no difference.
>
You have forgotten to add the +towgs84 parameter to the first
projection. Alternatively, you can use "+datum=WGS84" instead of
"+ellps=WGS84 +towgs84=0,0,0,0,0,0,0".
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