Fixing Tutorial 12 Visualizing Geological Cross Sections with PyVista

[JanWagner1312]

Describe the bug
Under "Adding texture to mesh", the texture is rotated in the wrong direction.

Additional context
This code should deliver a solution:

from matplotlib.pyplot import get_cmap

create an image using numpy,

zz = grid['values'].reshape(1201,662)

Creating a custom RGB image

cmap = cmap_seismic #get_cmap("nipy_spectral")
norm = lambda x: (x - np.nanmin(x)) / (np.nanmax(x) - np.nanmin(x))
hue = norm(zz.ravel())
colors = (cmap(hue)[:, 0:3] * 255.0).astype(np.uint64)
image = colors.reshape((1201, 662, 3), order="F")

Convert 3D numpy array to texture

tex = pv.numpy_to_texture(image)

Render it

grid.plot(texture=tex)