[Proj] PROJ 4.5.0 beta (and Krovak!)

[Jachym Cepicky]

Hallo,
On Tue, Oct 17, 2006 at 04:41:49PM -0400, Frank Warmerdam wrote:
> Gerald I. Evenden wrote:
> >I do not particularly care what the projection is called but I would 
> >appreciate some communications as to using the 'kocc' designation so I 
> >could at least change my releases of libproj4 to conform with external 
> >usage.
> 
> Gerald,
> 
> While proj produces results, though I don't know how correct they are:
> 
> warmerda at gdal2200[1926]% ./proj +proj=krovak +ellps=bessel
> 10 45
> -1164802.15     -1546506.69

i can confirm this result, same for me and should be correct

> 
> I don't really know any test points for Krovak or even what options
> are required in the two implementations.

try this one:
echo "12d48'25.15992  49d27'8.14571" | cs2cs +proj=latlong +datum=WGS84 \
+to +proj=krovak +ellps=bessel +no_defs \
+towgs84=570.8,85.7,462.8,4.998,1.587,5.261,3.56

-868208.53      -1095793.57 -46.96

(from 
http://grass.fsv.cvut.cz/wiki/index.php/S-JTSK#Praktick.C3.A1_uk.C3.A1zka )

> 
> For now, I'll stick with the existing Krovak code for the 4.5.0 release,
> but if there are things we can do to make the two implementations
> compatible with the aim of a seamless transition to use of libproj4
> in the future, I'd be all for that!
> 
> PS. I see PJ_krovak was checked in sometime in 2002.
> 
> Best regards,
> --

hope, this helps a bit

jachym

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Jachym Cepicky
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