[Proj] hammer parameters?
woklist at kyngchaos.com
Wed Jan 19 14:47:39 EST 2011
So, can anyone tell me what the M and W parameters mean, or at least what values to use to get the Breisemeister (without using ob_tran)?
On Jan 13, 2011, at 11:01 AM, William Kyngesburye wrote:
> On Jan 12, 2011, at 5:33 PM, Frank Warmerdam wrote:
>> For what it is worth, it is possible to embed a literal PROJ.4 string
>> in GDAL/OGR WKT in which case that will be used as the translation to
>> PROJ.4 format.
>> PROJCS["UTM Zone 11, Northern Hemisphere",
>> GEOGCS["WGS 84",
>> SPHEROID["WGS 84",6378137,298.257223563,
>> EXTENSION["PROJ4","+proj=utm +zone=11 +datum=WGS84 +wktext"]]
>> When passing proj.4 strings to GDAL utilities which take
>> PROJ.4 as input you can include the +wktext option to force
>> literal inclusion of the PROJ.4 string. For projections
>> completely not supported by GDAL you will need to create
>> WKT with some sort of fake projection (perhaps just use
>> the above and update the EXTENSION portion.
> I tried this a few months ago for another unsupported projection in GDAL with no luck. Doesn't work here either. Quote from Evan Rouault:
> "+wktext cannot help when OSR doesn't recognize the projection. It only helps
> to keep the extra options that OSR doesn't handle by itself."
> So, if GDAL doesn't support ob_tran, +wktext won't help.
> William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
> First Pogril: Why is life like sticking your head in a bucket filled with hyena offal?
> Second Pogril: I don't know. Why IS life like sticking your head in a bucket filled with hyena offal?
> First Pogril: I don't know either. Wretched, isn't it?
> -HitchHiker's Guide to the Galaxy
> Proj mailing list
> Proj at lists.maptools.org
William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
All generalizations are dangerous, even this one.
More information about the Proj