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<DIV><SPAN class=410301815-14072008><FONT face=Arial color=#0000ff
size=2>Frank,</FONT></SPAN></DIV>
<DIV><SPAN class=410301815-14072008><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=410301815-14072008><FONT face=Arial color=#0000ff
size=2>Several new coordinate systems has been defined in Northern and Eastern
Europe the last 15 years, due to both political and technical reasons. Both the
official Swedish and Estonian coordinate reference systems are not supported by
GeoTIFF but has been defined by EPSG since several years. They are both defined
using completely new geodetic measurements.</FONT></SPAN></DIV>
<DIV><SPAN class=410301815-14072008></SPAN><SPAN class=410301815-14072008><FONT
face=Arial color=#0000ff size=2>Is there any mechanism to make official updates
to GeoTIFF? Or should we (as a consultant company) just go ahead and recompile
libgeotiff on our own as needed?</FONT></SPAN></DIV>
<DIV><SPAN class=410301815-14072008><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=410301815-14072008><FONT face=Arial color=#0000ff size=2>Best
Regards</FONT></SPAN></DIV>
<DIV><SPAN class=410301815-14072008><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=410301815-14072008><FONT face=Arial color=#0000ff
size=2>Andreas </FONT></SPAN></DIV>
<DIV><SPAN class=410301815-14072008><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=410301815-14072008> </SPAN>-----<BR>From: Frank Warmerdam
[<A href="mailto:warmerdam@pobox.com">mailto:warmerdam@pobox.com</A>]<BR>Sent:
den 14 juli 2008 16:41<BR>To: Oxenstierna Andreas<BR>Cc:
geotiff@lists.maptools.org<BR>Subject: Re: [Geotiff] GeoTIFF - unsupported
PCS<BR><BR>Oxenstierna Andreas wrote:<BR>> We are working with images over
Estonia and tried to make GeoServer<BR>> use an ImageMosaic of
GeoTIFFs.<BR>> However, we found out that GeoTIFF does not support the "new"
Estonian<BR>> Coordinate System from 1997:<BR>> ProjectedCSTypeGeoKey
(Short,1):<BR>> PCS_Estonian_Coordinate_System_of_1997<BR>> The file
epsg_pcs.inc only includes the older Estonian PCS from
1992.<BR>> <BR>> How is the status of GeoTIFF with "new" CRS? When
looking into<BR>> epsg_pcs.inc the latest entry seems to be several years
old.<BR>> <BR>> In Sweden we have a new geodetic system, SWEREF,
which is not included<BR>> as well.<BR>> It is vacation in Sweden. I will
contact the Swedish Land Survey in<BR>> this matter when relevant people is
back.<BR>> We will also do work in the other Baltic countries and assume we
will<BR>> run into the same issue there.<BR>> <BR>> Is it possible
to just update epsg_pcs.inc (and epsg_gcs.inc etc.)<BR>> with needed CS's and
recompile libgeotiff?<BR><BR>Andreas,<BR><BR>The general practice has been to
not update the .inc files (which do not seem to have a very deterministic
relationship with the names from the EPSG database) so these still reflect a
snapshot of the PCS codes from the mid 90's when GeoTIFF was
standardized.<BR><BR>But, people do just go ahead and use new PCS codes whether
they are represented in the .inc files or not. Looking in my records the
"Estonian Coordinate System of 1997" is PCS 3301.<BR><BR>Best
regards,<BR>--<BR>---------------------------------------+--------------------------------<BR>---------------------------------------+------<BR>I
set the clouds in motion - turn up | Frank Warmerdam,
warmerdam@pobox.com<BR>light and sound - activate the windows | <A
href="http://pobox.com/~warmerdam">http://pobox.com/~warmerdam</A><BR>and watch
the world go round - Rush | President OSGeo, <A
href="http://osgeo.org">http://osgeo.org</A><BR><BR></DIV></FONT>
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