Revision: 5869
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=5869&view=rev
Author: jswhit
Date: 2008-07-25 11:41:18 +0000 (Fri, 25 Jul 2008)
Log Message:
-----------
add SH plot (to test auto barb flipping).
Modified Paths:
--------------
trunk/toolkits/basemap/examples/barb_demo.py
Modified: trunk/toolkits/basemap/examples/barb_demo.py
===================================================================
--- trunk/toolkits/basemap/examples/barb_demo.py 2008-07-25 10:22:29 UTC
(rev 5868)
+++ trunk/toolkits/basemap/examples/barb_demo.py 2008-07-25 11:41:18 UTC
(rev 5869)
@@ -32,8 +32,8 @@
nxv = 25; nyv = 25
udat, vdat, xv, yv = m.transform_vector(u,v,lons1,lats1,nxv,nyv,returnxy=True)
# create a figure, add an axes.
-fig=plt.figure(figsize=(8,8))
-ax = fig.add_axes([0.1,0.1,0.7,0.7])
+fig=plt.figure(figsize=(8,6))
+ax = fig.add_axes([0.1,0.1,0.8,0.8])
# plot color-filled contours over map
levs = np.arange(960,1051,4)
cs1 = m.contour(x,y,p,levs,colors='k',linewidths=0.5)
@@ -41,7 +41,7 @@
# plot barbs.
m.barbs(xv,yv,udat,vdat,length=6,barbcolor='k',flagcolor='r',linewidth=0.5)
# plot colorbar for pressure
-cax = plt.axes([0.875, 0.1, 0.05, 0.7]) # setup colorbar axes.
+cax = plt.axes([0.875, 0.1, 0.05, 0.8]) # setup colorbar axes.
plt.colorbar(cax=cax) # draw colorbar
plt.axes(ax) # make the original axes current again
# draw coastlines
@@ -50,6 +50,34 @@
m.drawparallels(np.arange(0,81,20),labels=[1,1,0,0])
# draw meridians
m.drawmeridians(np.arange(-180,0,20),labels=[0,0,0,1])
-plt.title('Surface Wind Barbs and Pressure')
+plt.title('Surface Wind Barbs and Pressure (NH)')
+
+# stereogrpaphic projection (SH).
+m = Basemap(width=10000000,height=10000000,lon_0=-90,lat_0=-45.,lat_ts=-45,
+ resolution='l',projection='stere')
+x,y = m(lons,lats)
+# transform from spherical to map projection coordinates (rotation
+# and interpolation).
+nxv = 25; nyv = 25
+udat, vdat, xv, yv = m.transform_vector(u,v,lons1,lats1,nxv,nyv,returnxy=True)
+# create a figure, add an axes.
+fig=plt.figure(figsize=(8,6))
+ax = fig.add_axes([0.1,0.1,0.8,0.8])
+# plot color-filled contours over map
+levs = np.arange(960,1051,4)
+cs1 = m.contour(x,y,p,levs,colors='k',linewidths=0.5)
+cs2 = m.contourf(x,y,p,levs)
+# plot barbs.
+m.barbs(xv,yv,udat,vdat,length=6,barbcolor='k',flagcolor='r',linewidth=0.5)
+# plot colorbar for pressure
+cax = plt.axes([0.875, 0.1, 0.05, 0.8]) # setup colorbar axes.
+plt.colorbar(cax=cax) # draw colorbar
+plt.axes(ax) # make the original axes current again
+# draw coastlines
+m.drawcoastlines()
+# draw parallels
+m.drawparallels(np.arange(-80,-19,20),labels=[1,1,0,0])
+# draw meridians
+m.drawmeridians(np.arange(-180,0,20),labels=[0,0,1,0])
+plt.title('Surface Wind Barbs and Pressure (SH)',y=1.04)
plt.show()
-
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