On 11/29/05, Rob Atkinson <[EMAIL PROTECTED]> wrote: > Hi All, > > couple of pointers and questions... > > am currently trying to organise some effort to get a major new geotools > enhancement (Complex features) into the Geoserver head, and the WCS > support is an obvious target to try to roll in. Would be grateful if you > can identify any issues, futher development work required to roll that > in, and also if any committed effort for this can be rolled into my > project plan as in-kind support.
Reporting issues here on the list or on the jira? The jira seems like the best central place for reporting issues. As far as I know, there aren't too many people aside from me and Bryce, and Alessio and Simone that use the WCS branch on a regular basis. > Is there a UI config for the new WCS stuff? Yes there is. The configuration for a Coverage is similar to the configuration for a FeatureType. > Norman - what is the current status of NetCDF support you were looking at? > > In general - we have two requirements in the medium term: > 1) auto-configure WCS for a catalogue of NetCDF files, to support > subsetting actions easily having found a netCDF file in a catalogue > 2) be able to subset (in a single WCS call) from collections of netCDF > files across both spatial and temporal dimensions. > > obviously, these capabilities would be better if they are not specific > to netCDF formats. I see this as being configurable in a manner very similar to other CoverageStore formats. With respect to configuring a CoverageStore from a NetCDF file via the web interface, I see it as follows: 1. A path to the NetCDF file is needed (just like everything else currently in existence). 2. The user can specify the desired variable for which a GridCoverage will be created. 3. The user specifies the time dimension. 4. I don't know how height will be handled yet. 5. The projection parameters can be detected from the NetCDF file, if there's any. If not, specify one??? > > What is the intention, progress etc here? > I have working code that will convert netCDF Geogrids to raster coverages for display in the WCS branch, and to FeatureTypes for contourng the data, by using the NetCDF java library from (http://www.unidata.ucar.edu/software/netcdf-java/). I have to gain understanding on how to transform the elements of a netCDF Geogrid to GridCoverages in geotools. >From then on it is necessary to: 1. See how nD formats will be handled. Efren Serra is curently inquiring as to what is supported in the schema for nD coverages. 2. Create a plugin for NetCDF files, similar to the other Coverage plugins. > Also, there are many netCDF conventions - what is the expected level of > support and configurability? That is why I think that some user interaction during Coverage configuration will be required (similar to the other Coverage plugins)--to choose the variable for which a coverage store will be created, and to specify other dimensions like time and such. I am also interested to find out how other people see it. Alex > > Regards > Rob Atkinson > Social Change Online > (on behalf several clients!) > > > > Efren Serra wrote: > > Hello Alex, > > > > I would be willing to help you provide/implement netCDF support on GeoServer > > since I deal with Gridded data. > > I was wondering if you could elaborate on the time series data; wouldn't > > this be adressed by one of the following GML schemas: > > > > 14 GML schemas - temporal information and dynamic features > > 18 GML schemas - observations > > > > v/r, > > Efren > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] Behalf Of > > Alexander Petkov > > Sent: Tuesday, November 22, 2005 7:58 AM > > To: Norman Barker; [EMAIL PROTECTED]; > > [EMAIL PROTECTED] > > Subject: [Geoserver-devel] Re: [Geoserver-users] netcdf - wcs resource > > > > > > Hello Norman: > > > > Thanks for for reply. I will continue with in line comments. > > > >> I am in discussions with Simone Giannechini who is leading GeoServer WCS, > >> > > to > > > >> try and get the direction of incorporating GML in Jpeg2000 as a coverage > >> format, particularly as netCDF in JP2 is a recommended profile in the > >> > > spec. > > > >> Does this interest you? > >> > > > > Yes, esp. if there's any work outlined, or some code being developed. > > I am not sure which spec you are referring to, but it looks like it is > > the WCS spec document, correct? > > > > > >> If you need to get a collection on-line why you do some GeoServer > >> development, my MapServer netCDF howto is available here > >> http://ms.gis.umn.edu/docs/howto/WCSServerFormatHowTo. I am keen to use > >> GeoServer, for its WFS, and planned GML support. Both very good servers > >> > > as > > > >> they are though. > >> > > > > Similar to your approach from some time ago, I have a routine to > > convert the netCDF data to a series of Geotiff files, and describe > > those as coverages in Geoserver's catalog. I use the WCS branch, > > obviously. For contouring the data, I create a series of geometries in > > Postgis and query those as FeatureTypes. It works for now, but it is a > > temporary solution. > > > > Currently I am mainly looking to orient myself on how to proceed with > > respect to implementing netCDF support. I believe I need to look at > > developing a plugin similar to the one for ArcGrid coverage (it has > > been mentioned in the list before). I already have a way to read the > > gridded data using the netcdf java API. > > > > There's still something ambiguous about how to handle time series > > data. I remember seeing the issue addressed in the WCS spec document, > > but I am not sure if it is a part of geoserver (or geotools ) yet. > > This was also a topic of discussion during IRC meets, it looks I have > > to revisit the archives. > > > > Anyway, if someone has ideas on how I should proceed from here, please > > do share. > > > > And Norman, thanks for sharing your Mapserver NetCDF howto. I will > > make sure to go through it this week. > > > > Alex > > > > > >>> From: Alex Petkov <[EMAIL PROTECTED]> > >>> To: "Norman Barker" <[EMAIL PROTECTED]> > >>> Subject: Re: [Geoserver-users] netcdf - wcs resource > >>> Date: Fri, 18 Nov 2005 10:29:19 -0700 > >>> > >>> Hello Norman: > >>> > >>> I have been tasked to do the same thing, and I wonder what work is > >>> > > already > > > >>> being done. > >>> > >>> Can you tell me if you worked on netcdf coverage support and how far into > >>> it are you? > >>> > >>> Thanks, > >>> > >>> Alex > >>> > >>> > >>> > >>> [EMAIL PROTECTED] wrote on 04/29/2005 08:11:39 > >>> AM: > >>> > >>> > >>>> Hi, > >>>> > >>>> my boss at RSI has resourced me to put some time into adding netCDF > >>>> > >>> coverage > >>> > >>>> support into Geoserver, the reason that it took so long since my > >>>> > > initial > > > >>>> enquiry is that we had to develop a baseline solution using MapServer. > >>>> > >>>> Please advise on what needs to be done, and how to do it, and I will > >>>> > > get > > > >>> on. > >>> > >>>> Many thanks, > >>>> > >>>> Norman Barker > >>>> > >>> > >> > >> > > > > > > ------------------------------------------------------- > > This SF.Net email is sponsored by the JBoss Inc. Get Certified Today > > Register for a JBoss Training Course. Free Certification Exam > > for All Training Attendees Through End of 2005. For more info visit: > > http://ads.osdn.com/?ad_idv28&alloc_id845&op=ick > > _______________________________________________ > > Geoserver-devel mailing list > > [EMAIL PROTECTED] > > https://lists.sourceforge.net/lists/listinfo/geoserver-devel > > > > > > > > > > ------------------------------------------------------- > > This SF.net email is sponsored by: Splunk Inc. Do you grep through log files > > for problems? Stop! Download the new AJAX search engine that makes > > searching your log files as easy as surfing the web. 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