[GRASS5] proj feature

[Christian G. Tveen]

Hi,

This mail is intended as information on pj_get_string(), which might be 
usefull to others using this method, or maybe its a feature that should 
be fixed (or I'm misusing it :-)

I've had a little fight setting a pj_info structure. I have such a 
structure that I need to recenter quite often, so I have made a method 
to re-initialize  the structure, for which I use pj_get_string(). 
However, the structure is not completely initialized if it has been used 
before. To make it work, one has to memset the structure to 0 before 
calling pj_get_string().

Regards Christian G. Tveen


PS: If anybody knows if it would be safe just to enter the projection 
center directly into the projection structure, I would appreciate that 
information. I can't right away figure out if the projection on 
initialisation time calculates som intermediate variables based on the 
projection center that would not be updated if I later changes the 
projection center.

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