Olaf Danne ha scritto:
> Hello,
>
> we would like to briefly introduce ourselves as a developing group who
> has been started to investigate and test Geotools for the use within
> specific applications which we are currently developing. If we decide to
> use it (we strongly think to do so), we will also have to contribute
> directly and to supply new code to Geotools in future.
Now that's good news, welcome on board (really hope you can choose
geotools for good) :-)
> We are a company working basically on environmental informatics and
> geodata processing, and we have two applications for which Geotools is a
> strong candidate to be used within. The first one, which I am involved
> in, is a desktop application to display satellite orbits and
> corresponding swaths of instruments onboard these satellites.
Have you evaluated uDig in this respect?
> The
> display will basically be a visualization of the orbits/swaths on a
> world map, but shall be highly configurable in detail. E.g., we will
> have to:
>
> - display additional layers (e.g., a grid, country borders, cities,
> selected zones, a background image) on demand
> - supply mechanisms to zoom, rotate, shift, and to select specific
> sections of the map
> - show the map under different projections
This is something we do support already, uDig can do almost all of them,
besides map rotation, but I think this is just a lack of user interface
for it (renderers to accept an affine transform as a parameter).
> The last point is important regarding our potential contribution to
> Geotools. Besides a "standard" rectangular cylindric projection, we will
> need at least an AzimuthalEquidistant and a Gnomonic projection which
> are obviously not yet supplied by Geotools (package org
> <javascript:searchRef('org')>.geotools
> <javascript:searchRef('geotools')>.referencing
> <javascript:searchRef('referencing')>.operation
> <javascript:searchRef('operation')>.projection).
> <javascript:searchRef('projection')> Therefore, we will have to go and
> add these projections following your tutorial
> (http://docs.codehaus.org/display/GEOTOOLS/How+to+add+new+projections).
> - You may also regard this email as "step 0" of that tutorial ;-)
Martin is our resident projection expert, I think he'll be happy to have
two new projections around :-)
> Questions we may have in future will regard these projection topics, but
> also the rendering and performance issues, which are also very important
> for us.
uDig has a tentative multi-threaded rendering architecture. Geoserver
does use a plain sequential one. Some more research in this topic is
needed, but I'm personally very interested in the topic.
I hope we can have a fruitful collaboration
Cheers
Andrea Aime
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