[Proj] Eric Miller VB Wrapper +nadgrids=

Eric Miller EMiller at dfg.ca.gov
Thu Jun 30 20:17:13 EST 2011

>>> On 6/30/2011 at 5:33 PM, stevejking <stevejking at talktalk.net> wrote:

> stevejking wrote:
>> Thanks for your reply.
>> I've checked my transformation using cs2cs and it works great replacing
>> the +towgs84 bit with
>> +nadgrids=c:\proj\nad\OSTN02_TNv2.gsb
> Sorry, this worked with cs2cs Rel 4.7.1 (which I had with FWTools), but does
> not work with cs2cs Rel 4.4.6 (the version that came with my proj.dll and
> proj_api.dll). 4.4.6 returns *    *0.00 as the coordinates. So guess it's a
> problem with the proj.dll version not supporting the nadgrids gsb file. 
> Think I read somewhere how to make the proj_api.dll from a more recent
> proj.dll. Where?

The source? See the proj_api.zip file.  I'm not sure if the proj_api.dll needs to be recompiled.  It may just work with newer proj.dll files.


Eric G. Miller
Staff Programmer
CA Dept. of Fish & Game

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