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Hello.
Thanks, but it is really not a big problem. Sorry for the noise.
- Tore.
On 22. mai. 2009, at 02.47, Jody Garnett wrote:
Well let us know if it is a trouble for you; the WMS client code is
very modular and if we can "detect" we are using your server we should
be able to normalize a bit. (We already need to normalize across the
different versions of the WMS specification ...).
Jody
On Thu, May 14, 2009 at 7:08 PM, Tore Halset <halset@xxxxxxxxxxx>
wrote:
On May 14, 2009, at 8:32 , andrea antonello wrote:
If I remember correctly the measure taken is the diagonal of the
viewport and the scale is calculated referring to the OGC defined
screen dpi and is hardcoded.
Thanks Jody and Andrea!
Switching from UTM 32N to unprojected for my area, the scale is the
same but
the image is squeezed vertically. So, I think the scale is measured
horizontal only. ArcGIS behaves the opposite way, so it looks like
they are
using vertical scale.
Googling "OGC defined screen dpi" led me to
http://javadoc.geotools.fr/2.3/org/geotools/renderer/lite/RendererUtilities.html
that
states that the OGC defined DPI is 90. Is that correct? Is looks
like my
uDig 1.1.1 uses 72.
I am creating a WMS server and there are some viewing rules that
are based
on the scale. Yes, I know it is almost impossible to do this
correctly as I
do not know the client DPI and if they use horizontal, vertical or
diagonal
scale.
Regards,
- Tore.
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