This is probably related to the Agg renderer issue with edge-only markers.
On Wed Feb 18 2015 at 7:14:22 PM Eric Firing <efir...@hawaii.edu> wrote:
> On 2015/02/18 2:00 PM, Thomas Caswell wrote:
> > Is this just on master or with 1.4.x?
>
> It's on 1.4.1 and 1.4.2, but not on 1.4.3 or master or 1.4.0. Therefore
> I won't enter it as an issue.
>
> I don't know what went wrong with this in those two bugfix releases.
>
> Eric
>
> >
> > On Wed Feb 18 2015 at 6:00:26 PM Eric Firing <efir...@hawaii.edu
> > <mailto:efir...@hawaii.edu>> wrote:
> >
> > 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
> > <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
> > <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
> > <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.
> > >
> > >
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