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-tp7187741p7187741.html Sent from the Mapserver - User mailing list archive at Nabble.com. _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users