On 2015/02/18 9:52 AM, njs wrote: > Hi All, > > I'm having issues with quiver, and quiverkey() although, I have never > experienced these issues in the past. I attached an image to this post that > demonstrates that quiver_key() used to work for me, this image was generated > on 17-Jul-2014. However, if I run this exact same code (see below for the > code), the quiver key reference on the top right does not get plotted, but > the text will. I haven't changed anything, but I think there have been some > package updates between then and now. For what it's worth, I've tried many > different ways to generate the quiverkey() and haven't had any luck. Has > anyone else experienced similar issues?
That's alarming! I can reproduce the problem even with the standard mpl example--the arrow is missing in 5 out of the 6 plots. I will file a github issue. Thanks for the report. Eric > > Thanks for any insights! > > Working quiverkey(): > <http://matplotlib.1069221.n5.nabble.com/file/n44968/qkey.png> > > quiverkey() doesn't work anymore...: > <http://matplotlib.1069221.n5.nabble.com/file/n44968/qkey_1.png> > > Code: > > fig = plt.figure(figsize=(12,12)) > map = Basemap(projection = 'cyl', llcrnrlat = -30, urcrnrlat = 90, \ > llcrnrlon = 0, urcrnrlon = 360, resolution = 'c') > [x,y] = N.meshgrid(lons,lats) > [x,y] = map(x,y) > [xulr,yulr] = N.meshgrid(lons1,lats1) > [xulr,yulr] = map(xulr,yulr) > clevs = N.arange(-50,51,5) > cs = map.contourf(x,y,hgt500aComp[lag,:,:],cmap='RdBu_r', > levels = clevs) > cs1 = map.contour(x,y,hgt500Comp[lag,:,:],N.arange(1110,1230,6), \ > colors='purple',linewidth=100,linestyle = 'dashed') > cs1 = map.contour(x,y,hgt500aComp[lag,:,:],levels = clevs, > colors = 'black') > > colors=[(244,2,255),(36,26,232),(255,255,255),(8,232,61),(224,255,0)] > cmap = mF.make_cmap(colors, position=None, bit=True) > clevs = N.arange(-30,30.025,.025) > cs2 = map.contourf(xulr,yulr,olrComp[lag,:,:],cmap=cmap, > levels = clevs) > Q = map.quiver(x[::2,::2],y[::2,::2],u850Comp[lag,::2,::2], > v850Comp[lag,::2,::2],width = 0.002,scale = 50) > map.drawcoastlines(linewidth = 1) > map.drawcountries(linewidth = 0.5) > map.fillcontinents(zorder = 0) > map.drawmeridians(N.arange(0,360,30)) > map.drawparallels(N.arange(-90,90,30)) > title = plt.title('Lag: {0} | Transition Cases | n = > {1}'.format(lag-30,len(cases))) > title.set_fontweight('bold') > axt = fig.add_axes([.15,.35,.3,.01]) > cbar = plt.colorbar(cs,cax = axt,orientation = 'horizontal') > cbar.set_label('500-hPa Anomaly (m)') > cbar.set_ticks(N.arange(-50,51,25)) > cs1.clabel(fmt = '%d') > axt = fig.add_axes([.58,.35,.3,.01]) > cbar2 = plt.colorbar(cs2,cax = axt,orientation = 'horizontal') > cbar2.set_label(r'OLR Anomaly ($W m^{-2}$)') > cbar2.set_ticks(N.arange(-30,31,10)) > qk = plt.quiverkey(Q,0.95,1.05,1.0,r'1 $m s^{-1}$',labelpos='E') > > > > -- > View this message in context: > http://matplotlib.1069221.n5.nabble.com/quiverkey-doesn-t-plot-the-reference-vector-tp44968.html > Sent from the matplotlib - users mailing list archive at Nabble.com. > > ------------------------------------------------------------------------------ > Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server > from Actuate! Instantly Supercharge Your Business Reports and Dashboards > with Interactivity, Sharing, Native Excel Exports, App Integration & more > Get technology previously reserved for billion-dollar corporations, FREE > http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
