1 | initial version |

The questions seems to split into two questions.

Why do we get such different graphs when using

`list_plot3d`

with spline interpolation, starting from two 3D point sets whose only difference is a scaling of the z-values?How can we change the (x, y, z) aspect ratios when viewing a plot?

I don't have an answer here...

Here is slightly rewritten code to reproduce the problem.

```
nx, ny = 74, 90
def fx(x):
return 0.5 + x/2.5
def fy(y):
return 40*y
def g(x, y):
xx = 30 * (fx(x/nx) - 1/2) + 1/2
yy = fy(y/ny)
zz = 5 * abs(zeta(fx(x/nx) + I*fy(y/ny)))
return xx, yy, zz
gxyz = [g(x, y)
for x in range(-nx, nx+1)
for y in range(-ny, ny+1)]
g_plot = list_plot3d(gxyz, interpolation_type='spline')
g_plot.show()
hxyz = [(x, y, z/5) for x, y, z in gxyz]
h_plot = list_plot3d(hxyz, interpolation_type='spline')
h_plot.show(aspect_ratio=(1, 1, 10))
```

One would expect the graphs to be scaled versions of each other, but that's far from being the case!

This is possibly revealing a bug.

Use `aspect_ratio`

as above, adapting to the need.

For instance, to get the bounding box for `g_plot`

closer to a cube:

```
g_plot.show(aspect_ratio=(3, 1, 4))
```

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