Example 14: Vector plot overlaid on a contour map

Overlaying a vector plot on a contoured temperature field

f = cf.read(f"cfplot_data/ggap.nc")

u = f.select_by_identity("eastward_wind")[0]
v = f.select_by_identity("northward_wind")[0]
t = f.select_by_identity("air_temperature")[0]

# Subspace to get values for a specified pressure, here 500 mbar
u = u.subspace(pressure=500)
v = v.subspace(pressure=500)
t = t.subspace(pressure=500)

cfp.gopen()
cfp.mapset(lonmin=10, lonmax=120, latmin=-30, latmax=30)
cfp.levs(min=254, max=270, step=1)
cfp.con(t)
cfp.vect(u=u, v=v, key_length=10, scale=50, stride=2)
cfp.gclose()