Dr. Phillip M. Feldman wrote: > I’ve been experimenting with basemap, and have been able to make maps using > the orthographic and polyconic projections. When I try to generate a map > using the geostationary projection, I get the error message shown below. I > haven’t been able to make head or tail of this message; any advice will be > appreciated. > > Phillip > > RuntimeError Traceback (most recent call last) > > C:\Phillip\pmap.py in <module>() > 6163 > 6164 # Create basemap object: > -> 6165 map= Basemap(**map_parms) > 6166 ax= fig.add_axes([0.1,0.08,0.7,0.82]) > 6167 > > C:\Python25\lib\site-packages\mpl_toolkits\basemap\__init__.pyc in > __init__(self, llcrnrlon, llc > rnrlat, urcrnrlon, urcrnrlat, llcrnrx, llcrnry, urcrnrx, urcrnry, width, > height, projection, res > olution, area_thresh, rsphere, lat_ts, lat_1, lat_2, lat_0, lon_0, lon_1, > lon_2, no_rot, suppres > s_ticks, satellite_height, boundinglat, fix_aspect, anchor, ax) > 680 > 681 # initialize proj4 > --> 682 proj = > Proj(projparams,self.llcrnrlon,self.llcrnrlat,self.urcrnrlon,self.urcrnrl > at) > 683 > 684 # make sure axis ticks are suppressed. > > C:\Python25\lib\site-packages\mpl_toolkits\basemap\proj.pyc in > __init__(self, projparams, llcrnr > lon, llcrnrlat, urcrnrlon, urcrnrlat, urcrnrislatlon) > 117 urcrnry = -llcrnry > 118 elif self.projection == 'geos': > --> 119 self._proj4 = pyproj.Proj(projparams) > 120 # find major and minor axes of ellipse defining map proj > region. > 121 # h is measured from surface of earth at equator. > > C:\Python25\lib\site-packages\mpl_toolkits\basemap\pyproj.pyc in > __new__(self, projparams, **kwa > rgs) > 146 kvpairs.append(kvpair+' ') > 147 projstring = ''.join(kvpairs) > --> 148 return _Proj.__new__(self, projstring) > 149 > 150 def __call__(self, *args, **kw): > > C:\Python25\lib\site-packages\mpl_toolkits\basemap\_proj.pyd in > _proj.Proj.__cinit__ (src/_proj. > c:587)() > 23 > 24 > ---> 25 > 26 > 27 > > RuntimeError: unknown prime meridian conversion id > WARNING: Failure executing file: <pmap.py> > > Philip: That's an error from the proj4 c library saying that it didn't like one of the parameters you used to define the projection. Since you didn't include the parameters you used, I can't say which one is the culprit.
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