Am 22.05.2013 20:42, schrieb Thomas Campagne:
Thanks André!
I will add a line for AGD66 datum and nadgrid file in pj_datums.c,
and make the appropriate change in the epsg file , and compile from
source.
Is possible to default to the use of +towgs84 when there is no
successful grids with +nadgrids?
For New-Zealand the line in pj_datums.c is: "nzgd49",
"nadgrids=nzgd2kgrid0005.gsb", "intl", "New Zealand Geodetic Datum
1949" And the epsg file contains: # NZGD49 <4272> +proj=longlat
+datum=nzgd49 +no_defs<>
Could the following work if points are not located within the area
covered by the NTv2 file?
pj_datums.c contains: "nzgd49", " [email protected] ",
"intl", "New Zealand Geodetic Datum 1949" And the epsg file
contains: # NZGD49 <4272> +proj=longlat +datum=nzgd49 +
towgs84=59.47,-5.04,187.44,0.47,-0.1,1.024,-4.5993 +no_defs<>
I have not yet tested such cases. You might try and report the result
here ;-)
Greetings,
André Joost
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