Example 15: Polar projection vector plot

Making a vector plot on a North Pole polar projection

f = cf.read(f"cfplot_data/ggap.nc")
u = f[1]
v = f[2]
u = u.subspace(Z=500)
v = v.subspace(Z=500)

cfp.mapset(proj="npstere")

cfp.gopen(columns=2)
cfp.vect(
    u=u,
    v=v,
    key_length=10,
    scale=100,
    stride=4,
    title="Polar plot using data grid",
)
cfp.gpos(2)
cfp.vect(
    u=u,
    v=v,
    key_length=10,
    scale=100,
    pts=40,
    title="Polar plot with regular point distribution",
)
cfp.gclose()