本文整理汇总了Python中matplotlib.toolkits.basemap.Basemap.rotate_vector方法的典型用法代码示例。如果您正苦于以下问题：Python Basemap.rotate_vector方法的具体用法？Python Basemap.rotate_vector怎么用？Python Basemap.rotate_vector使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类matplotlib.toolkits.basemap.Basemap的用法示例。
在下文中一共展示了Basemap.rotate_vector方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: meshgrid
# 需要导入模块: from matplotlib.toolkits.basemap import Basemap [as 别名]
# 或者: from matplotlib.toolkits.basemap.Basemap import rotate_vector [as 别名]
lats1 = -90.+dellat*arange(nlats)
lons1 = -180.+dellon*arange(nlons)
lons, lats = meshgrid(lons1, lats1)
# plot vectors in geographical (lat/lon) coordinates.
# north polar projection.
m = Basemap(lon_0=-135,boundinglat=25,
resolution='c',area_thresh=10000.,projection='npstere')
# create a figure, add an axes.
fig=figure(figsize=(8,8))
ax = fig.add_axes([0.1,0.1,0.7,0.7])
# rotate wind vectors to map projection coordinates.
# (also compute native map projections coordinates of lat/lon grid)
# only do Northern Hemisphere.
urot,vrot,x,y = m.rotate_vector(u[36:,:],v[36:,:],lons[36:,:],lats[36:,:],returnxy=True)
# plot filled contours over map.
cs = m.contourf(x,y,p[36:,:],15,cmap=cm.jet)
# plot wind vectors over map.
Q = m.quiver(x,y,urot,vrot) #or specify, e.g., width=0.003, scale=400)
qk = quiverkey(Q, 0.95, 1.05, 25, '25 m/s', labelpos='W')
cax = axes([0.875, 0.1, 0.05, 0.7]) # setup colorbar axes.
colorbar(cax=cax) # draw colorbar
axes(ax) # make the original axes current again
m.drawcoastlines()
m.drawcountries()
# draw parallels
delat = 20.
circles = arange(0.,90.+delat,delat).tolist()+\
arange(-delat,-90.-delat,-delat).tolist()
m.drawparallels(circles,labels=[1,1,1,1])