Hi Tony,
On 20-Feb-07, at 4:38 AM, [EMAIL PROTECTED] wrote:
Hi list,
in our project we are using jira plugins in our eclipse rcp
application. It is used for the visualization of different
facilities on a map. The map is delivered by a wms server, the
facilities are stored in a database (mysql). To show these
facilities a temporary shape file is created. It was a funny thing
writing mixed up big and little endian variables with java but
finally it works :-) (yes, I suppose somewhere an api / lib exists
but.. where?)
i) Is this the canonic way? Or is it somehow possible to create an
in-memory layer instead of writing a shape file?
There are code snippets for just this sort of thing at:
http://svn.geotools.org/udig/branches/1.1.x/udig/tutorials/
net.refractions.udig.code.examples/src/net/refractions/udig/code/
examples/
Now we have the problem that the map of the wms server is quite
colorful and in different scale ranges different colors are the
ground color. Therefore the icons (squares, circles, ..) which
represent the items of the shapefile are not as good visibile as
the user wants it. My idea: Create an shapefile with an polygon,
covering the complete world, set its colour to black and give a
controller to the user to adjust the opacity. Now the user can dim
the brightness of the wms map and the shapfile items (which are on
the top of the layer stack) are more visible.
ii) Good idea? Bad idea? Bullshit? Is there an internal (in udig)
mechanism to adjust the brightness of a png delivered by the wms
server?
I'd suggest creating a style for the feature layer that has a lower
opacity to tone down the colors use 50% maybe. Or use a different
color. I think it would be easier. But yes you can modify the
brightness of a GridCoverage. Never having done it you will have to
ask the Geotools users list for advice on how to do it.
Cheers,
Jesse
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