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<font face="Times New Roman, Times, serif">Yes, the angles can be
given either in "right-hand" (American) or "left-hand" (European)
convention. See the thread on:<br>
<br>
<a class="moz-txt-link-freetext" href="http://lists.maptools.org/pipermail/proj/2010-April/005198.html">http://lists.maptools.org/pipermail/proj/2010-April/005198.html</a><br>
<br>
Mind that angles can be given either in (micro)degrees (PROJ) or
radians (EPSG). You can find a discussion about the conversion
from EPSG numbers to PROJ, with both sign and radians conversion
in:<br>
<br>
<a class="moz-txt-link-freetext" href="http://trac.osgeo.org/geotiff/ticket/22">http://trac.osgeo.org/geotiff/ticket/22</a><br>
<br>
with an attached spreadsheet to perform the computation for the
Dutch coordinate system (EPSG:28992)<br>
<br>
Jan<br>
</font><br>
On 01/18/11 06:24, Mikhail Tchernychev wrote:
<blockquote cite="mid:4D352429.3030905@sbcglobal.net" type="cite">
<pre wrap="">Hello List,
It came to my attention that 7-parameters values should be different for
cs2cs and
programs like Geotrans and PCTrans. It seems all 3 angles should have
different
sign to match cs2cs results. Shifts stay the same, as well as scaling
(well, for
geotrans it is not in ppm). I wonder if it is something well known or
am I missing
something?
Thank you,
Mikhail
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