### COBAYA+CLASS: Can't print/plot theta

Posted:

**July 07 2023**Hello,

I did a run in COBAYA, putting a prior on H_0 rather than theta. That part of my yaml file looks like this:
Now I want to include theta in my triangular plots, but I think I did a mistake in setting derived: false, so now the parameter is not even included in the updated input file.

I tried post-processing in several ways but non of them worked.

I'd really appreciate the help,

Thanks!

I did a run in COBAYA, putting a prior on H_0 rather than theta. That part of my yaml file looks like this:

Code: Select all

```
100*theta_s:
#value: 'lambda theta_s_1e2: theta_s_1e2'
derived: false
latex: 100\theta_\mathrm{s}
H0:
prior:
dist: norm
loc: 73.2
scale: 1.3
ref:
dist: norm
loc: 68
scale: 1.3
proposal: 1.3
latex: H_0
```

**How can I include theta again?**I tried post-processing in several ways but non of them worked.

I'd really appreciate the help,

Thanks!