"""
Zinn & Harvey transformation
----------------------------

Here, we transform a field with the so called "Zinn & Harvey" transformation presented in
`Zinn & Harvey (2003) <https://www.researchgate.net/publication/282442995_zinnharvey2003>`__.
With this transformation, one could overcome the restriction that in ordinary
Gaussian random fields the mean values are the ones being the most connected.

See :any:`transform.zinnharvey`
"""

import gstools as gs

# structured field with a size of 100x100 and a grid-size of 1x1
x = y = range(100)
model = gs.Gaussian(dim=2, var=1, len_scale=10)
srf = gs.SRF(model, seed=20170519)
srf.structured([x, y])
srf.transform("zinnharvey", conn="high")
srf.plot()