Is this related to https://github.com/matplotlib/basemap/issues/163 ?
On Wed, Aug 27, 2014 at 5:41 AM, ChaoYue <chaoyue...@gmail.com> wrote: > Hi Michelle, > > I might not fully understand your problem, could you have a look at this > thread and see if it helps? > > http://matplotlib.1069221.n5.nabble.com/Fwd-Strange-behaviour-on-plotting-data-on-Ronbinson-projection-using-Basemap-td43222.html#a43233 > > Cheers, > > Chao > > > On Wed, Aug 27, 2014 at 9:58 AM, mmc [via matplotlib] <[hidden email]> > wrote: >> >> Hi All, >> >> I am having problems plotting data in Basemap. I have tried some of the >> different projections such as Robinson and Equidistant Cylindrical, however >> kept running into the error >> >> WARNING: x coordinate not monotonically increasing - contour plot >> may not be what you expect. If it looks odd, your can either >> adjust the map projection region to be consistent with your data, or >> (if your data is on a global lat/lon grid) use the shiftgrid >> function to adjust the data to be consistent with the map projection >> region (see examples/contour_demo.py). >> >> >> Having read some other forums, I see that it is due to the fact that the >> longitude is based on 0-360 rather that -180 to 180. I have been trying to >> rectify this with shiftgrid. >> >> I have used shiftgrid and have moved my longitudes to -180 to 180 however >> I keep running up with the error: >> >> >> ValueError: lon0 outside of range of lonsin >> >> >> I also manage to get one plot out, which has the right projection I want >> (I am looking over the Atlantic) however the data isnt shifting in line with >> the longitudes. Would anyone know why this is the case? >> >> I have am using shiftgrid as below and the Basemap projection of >> Equidistant cylindrical (I have also tried Robinson however end up with >> similar result of data not moving in line with the longitude) >> >> MSLP = aso_mslp.data >> MSLP_background = np.mean(MSLP, axis = 0) >> >> # shifting grid to run from -180 to 180 rather than 0-360 >> MSLP_background,lon = shiftgrid(180., MSLP_background, lon, >> start=False) >> >> #setting the map in order to plot the data >> map = Basemap(projection ='cyl', llcrnrlat=-90, urcrnrlat=90, >> llcrnrlon=-180, urcrnrlon=180, resolution='c') >> >> Thanks >> Michelle >> >> ________________________________ >> If you reply to this email, your message will be added to the discussion >> below: >> http://matplotlib.1069221.n5.nabble.com/Basemap-shiftgrid-tp43851.html >> To start a new topic under matplotlib - users, email [hidden email] >> To unsubscribe from matplotlib, click here. >> NAML > > > > > -- > please visit: > http://www.globalcarbonatlas.org/ > *********************************************************************************** > Chao YUE > Laboratoire des Sciences du Climat et de l'Environnement (LSCE-IPSL) > UMR 1572 CEA-CNRS-UVSQ > Batiment 712 - Pe 119 > 91191 GIF Sur YVETTE Cedex > Tel: (33) 01 69 08 29 02; Fax:01.69.08.77.16 > ************************************************************************************ > > ________________________________ > View this message in context: Re: Basemap shiftgrid > > Sent from the matplotlib - users mailing list archive at Nabble.com. > > ------------------------------------------------------------------------------ > Slashdot TV. > Video for Nerds. Stuff that matters. > http://tv.slashdot.org/ > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Thomas Caswell tcasw...@gmail.com ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that matters. http://tv.slashdot.org/ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
