Dimitrios, I think using a new feature that is coming into MapServer is the way. MapServer will be supporting vector data like you have. See http://mapserver.org/trunk/development/rfc/ms-rfc-78.html
Mike -- Michael Smith US Army Corps Remote Sensing GIS/Center On 1/14/12 10:34 AM, "bluecap" <[email protected]> wrote: >Hello list, > >I'm developing an aeronautical & flight planning webGIS with MS 6, >Openlayers & Postgres. Although I have found my way in displaying >aeronautical information (navaids/airways/areas/metars/wind barbs etc) >with >the valuable help of this list, I'm now in the process of displaying winds >aloft (winds at various pressure levels), and would like to ask if the >workflow I've come up to makes sense (and if anyone has some better >ideas...). > >The wind data will be taken from grib files through NOAA (GFS model). The >problem is that the wind data are composed of two variables, the east-west >and the north-south velocities, which must be combined to provide the >final >wind data (eg wind from 330 degrees, 25 knots). I have found the (simple) >trigonometry to do this part. > >Now, the workflow I'm thinking is as follows: >1) download the grib file of the specific date and forecast depth from >NOMADS to my local HD (approx. 30MB) >2) convert it to a shapefile, with the command line app "degrib" from NOAA >3) dump it to Postgres >4) perform the calculation for every wind point >5) store the wind barb character to the DB (in order to have a small layer >in the mapfile, I take the barb as a character stored in the DB, along >with >its angle, and draw it - works very well in my metars) > >The million-dollar question concerns steps 1 and 2. Has anybody done this >before in a different way to provide me with some pointers? > >Thank you >Dimitrios Simos > >-- >View this message in context: >http://osgeo-org.1803224.n2.nabble.com/GFS-GRIB-data-in-MS-tp7187741p71877 >41.html >Sent from the Mapserver - User mailing list archive at Nabble.com. >_______________________________________________ >mapserver-users mailing list >[email protected] >http://lists.osgeo.org/mailman/listinfo/mapserver-users _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
