I’m trying to build a 3D surface plot with color in log10 scale. I just want the color to be in the log10 scale NOT the actual values itself.

```
N = 51
x = range(-10, stop = 10, length = N)
y = x
f(x,y)=x^2+y^2
Plots.plot(x,y,f,st=:surface,color=:jet,camera=(25,65))
```

See below:

Here is the output with Logscale created using GNUPLOT.

Check out the documentation. It is pretty

2 Likes

Thank you. The link really helped.

I have used log scale, but still unable to reproduce the chart from `gnuplot`

.

```
using Plots
N = 51
x = range(-10, stop = 10, length = N)
y = x
f(x,y)=x^2+y^2
out = Plots.plot(x,y,f,st=:surface,color= cgrad(:jet,scale=log),camera=(25,65))
savefig(out,"out.png")
```

The key driving factor is `z`

the need to included in `cgrad`

. How would one modify `z`

to get a replica of my original plot.

I figured it out:

```
using Plots
N = 51
x = range(-10, stop = 10, length = N)
y = x
f(x,y)=x^2+y^2
z = [0.001,0.01,0.05,5,50,100,200]
out = Plots.plot(x,y,f,st=:surface,color= cgrad(:jet,z,scale=log),camera=(25,65))
savefig(out,"out.png")
```

It would be great if we can automatically estimate values `z`

like `gnuplot`

.