It seems that I just cannot grasp the way the data needs to be formatted for this to work... I've used the griddata sample that James posted but it takes about 10 minutes to prep the data for plotting so that solution seems to be out of discussion.
I guess my issue is that I don't know what type of data is required by contourf function. Also as Jeff was saying earlier, the data is read from a grib file so supposedly it's already gridded. I've also looked at the basemap demo (http://matplotlib.sourceforge.net/users/screenshots.html#basemap-demo) and the data is read from 3 files, one for Lat one for Long and the Last for Z Data. Is there a way to automatically extract the data from the grib file to a format similar to the one used in the basemap example? Jeff Whitaker wrote: > > Mauro Cavalcanti wrote: >> Dear Anton, >> >> 2008/12/23 antonv <vasilescu_an...@yahoo.com>: >> >>> Also, because I figured out the data I need and already have the >>> scripts in place >>> to extract the CSV files I would really like to keep it that way. Would >>> it be possible to >>> just show me how to get from the csv file to the plot? >>> >> >> Here is a short recipe: >> >> import numpy as np >> >> f = open("file.csv", "r") >> coords = np.loadtxt(f, delimiter=",", skiprows=1) >> lon = coords[:,0] >> lat = coords[:,1] >> dat = coords[:,2] >> >> where "file.csv" is a regular comma-separated values file in the format: >> >> Lat,Lon,Dat >> -61.05,10.4,20 >> -79.43,9.15,50 >> -70.66,9.53,10 >> -63.11,7.91,40 >> ... >> >> Hope this helps! >> >> Best regards, >> >> > Since the arrays are 2D (for gridded data), a reshape is also needed, i.e. > > lon.shape = (nlats,nlons) > lat.shape = (nlats,nlons) > data.shape = (nlats,nlons) > > You'll need to know what the grid dimensons (nlats,nlons) are. > > -Jeff > > ------------------------------------------------------------------------------ > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > -- View this message in context: http://www.nabble.com/Plotting-NOAA-data...-tp21139727p21190078.html Sent from the matplotlib - users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
