<div class="MsoNormal" style="margin-right: 1.15pt;"><span style="" lang="EN-GB">Thank you all for your answers, Brent, Markus, Daniel and Paul,<br><br></span></div> <div class="MsoNormal" style="margin-right: 1.15pt;"><span style="" lang="EN-GB">It looks like GRASS GIS (because of its 3D capabilities) and/or UMN MapServer<br>are good choices for me. Some details (especially concerning WMS/WFS/WCS)<br>are still not that clear to me. At best the following could be realized by a GRASS<br>GIS configuration which conforms to a WMS/WFS/WCS architecture:<br><br></span></div> <div class="MsoNormal" style="margin-right: 1.15pt;"><span style="" lang="EN-GB">Some questions do I have to your answers:<br><br></span><span style="" lang="EN-GB"></span></div><div class="MsoNormal" style="margin-right: 1.15pt;"><span style="" lang="EN-GB">1. I thought the WMS server puts together the data it gets from the WFS <br> (vector/feature data) and from the WCS
(raster data) into a single raster<br> image?</span><span style="" lang="EN-GB"><br>2. Daniel, as far as I have figured out, WFS basic is without write access, and <br> WFS-T (transactional) is with write access. Do UMN MapServer or GRASS<br> GIS (Markus) already support this? It would be important to be able not only to<br> change styles (like with the SLDs) but to do annotations (I tried FIST on their<br> site, its nice, but annotations failed when I tried – the map wasn’t displayed<br> any more) or even change the vector data already stored in the vector layer <br> database (WFS for example).</span><span style="" lang="EN-GB"><br>3. With GRASS GIS, is it possible that when the user interacts with one view (in <br> the tablet PC ), he also manipulates (shift, zoom, change
layer) the other view<br> (in the table)? If not yet, would GRASS GIS be customizable to do so?</span><span style="" lang="EN-GB"><br>4. Does GRASS GIS (even over a WMS/WFS/WCS infrastructure) support POIs <br> so if the user clicks on a point in a map I can reference to a database to <br> display information about the object (POI) he clicked onto?</span><span style="" lang="EN-GB"><br>5. In the same constellation (GRASS GIS with WMS/WFS/WCS), is display of<br> realtime vector data coming in from sensors like GPS signals overlayed over<br> the map possible? –<span style=""> </span>The architecture would be an additional data source (to <br> WFS and WCS) with the GPS signals and the WMS puts them together to<br> one raster image and sends them to the multiple views? – By the way,
the <br> views are different, not identical.<br><br></span></div> <div class="MsoNormal" style="margin-right: 1.15pt;"><span style="" lang="EN-GB">So it would be nice to realize such an architecture, if possible solely with<br>GRASS GIS or, if reasonable, together with UMN MapServer.<br><br></span></div> <div class="MsoNormal" style="margin-right: 1.15pt;"><span style="" lang="EN-GB">I can not thank you often enough for your help so far, it would be awesome if you<br>could also answer the questions above. – Many thanks and till soon, I will let you<br>know my decision and experiences I will get with it.<br><br></span></div> <div class="MsoNormal" style="margin-right: 1.15pt;"><span style="" lang="EN-GB">Best regards,<br><br></span></div> <div class="MsoNormal" style="margin-right: 1.15pt;"><span style="" lang="EN-GB">Peter.</span></div><br><br><b><i>Daniel Calvelo <dca.gis@gmail.com></i></b> wrote:<blockquote class="replbq"
style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"> Hi Peter, in the following I assume you opt for OGC protocols.<br><br>On 3/13/07, Peter Fischer <peter_7003@yahoo.com> wrote:<br>[...]<br>> Is it possible with WMS (maybe using Styled Layer Descriptors, SLD) to write<br>> back vector data into the layers stored on the server (WFS for vector data I<br>> guess)? Or is access read-only?<br><br>That is up to your client application. In the WMS protocol you ask for<br>a map (and specify its appearance with SLD) and get an image, so you<br>would have to code in javascript or some other client-side tool the<br>means to send back mouse/keyboard events according to position within<br>the image, and a server-side thingie to feed those to a database.<br><br>OGC defines WFS-T, the transactional web feature service, which aims<br>at webservice-based vector editing. For a nice demo and framework, see<br>the FIST site.<br><br>> Is it
possible that the views interact with each other, e.g. on the tablet<br>> shifting the map displayed onto the table (in the other view) or switching<br>> to another map/layer?<br><br>That should be provided by your server, it seems quite feasible. You<br>will have to pool the server continiously for updates if you wish to<br>make them resemble real-time.<br><br>> Are there raster layers in WMS/WFS I can switch on and off?<br><br>Of course. Each layer is in fact a different WMS request.<br><br>> Can I define points of interest (POI) so if the user clicks on a point in a<br>> map I can reference to a database to display information about the object<br>> (POI) he clicked onto?<br><br>See the first point above. MapServer allows for this kind of x,y query natively.<br><br>> Can I control the contents of the view (shift, zoom etc.) from the outside<br>> e.g. by a script/program, or are there only the manipulators in the view's<br>> interface for
zooming, shifting the map cutout displayed in the view (e.g.<br>> the GRASS viewer or others)?<br><br>Sorry, I don't quite get this one.<br><br>HTH, Daniel.<br><br>-- <br>-- Daniel Calvelo Aros<br></peter_7003@yahoo.com></blockquote><br><p> 
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