[Proj] Re: Krovak test points
Melita Kennedy
mkennedy2 at earthlink.net
Wed Oct 18 18:04:42 EDT 2006
>----------------------------------------------------------------------
>
>Date: Tue, 17 Oct 2006 16:41:49 -0400
>From: Frank Warmerdam <warmerdam at pobox.com>
>Subject: Re: [Proj] PROJ 4.5.0 beta (and Krovak!)
>To: gerald.evenden at verizon.net, "PROJ.4 and general Projections
> Discussions" <proj at lists.maptools.org>
>
[contents snipped]
>
>I don't really know any test points for Krovak or even what options
>are required in the two implementations.
While we were implementing Krovak for ESRI software, we were sent
7 test points. I don't know how official these are, as the source is
unclear. Two of the points show up in another document sent by the
ESRI distributor in the Czech Republic. The longitudes are Greenwich-based,
Bessel 1841 and the XY axes are south-west oriented, rather than east-north.
The sample you posted is EN. When using the SW version, I got
x = 1546506.6922 y = 1164802.1478
longitude,latitude,x,y
16 50 59.17900, 50 12 32.44160, 1050538.6433, 568990.9967
12 50 23.78945, 49 50 35.78965, 1053301.0476, 859084.7000
22 19 38.87658, 49 50 35.78965, 1117926.6680, 180241.3620
22 19 38.87658, 48 38 23.46592, 1251684.1815, 184607.1409
12 50 23.78945, 48 38 23.46592, 1185471.9460, 880118.0569
16 50 59.17900, 50 12 32.44140, 1050538.6494, 568990.9974
17 25 51.17920, 50 15 30.70080, 1049221.1899, 527189.1948
Melita Kennedy
ESRI Product Specialist
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