COBAYA: Contour level outside plotted ranges

Use of Cobaya. camb, CLASS, cosmomc, compilers, etc.
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Ali Rida Khalife
Posts: 2
Joined: October 31 2022
Affiliation: Institut d'Astrophysique de Paris

COBAYA: Contour level outside plotted ranges

Post by Ali Rida Khalife » October 31 2022

Hello!
I'm running the Quick example in Cobaya, and trying to produce a triangular plot with getdist, when I do that I get the following:
WARNING:root:Parameters are 100% correlated: a, derived_a
/path/to/cobaya/getdist/mcsamples.py:1777: RuntimeWarning: invalid value encountered in divide
corrected = (bins2D[ix] * A + xP * Ax + yP * Ay) / denom
Traceback (most recent call last):
File "/path/to/Plot.py", line 16, in <module>
g.triangle_plot(samples, filled=True)
File "/path/to/cobaya/getdist/plots.py", line 2476, in triangle_plot
self.plot_2d(roots, param_pair=pair, do_xlabel=i2 == plot_col - 1, do_ylabel=i == 0,
File "/path/to/cobaya/getdist/plots.py", line 1686, in plot_2d
res = self.add_2d_contours(root, param_pair[0], param_pair[1], line_offset + i, of=len(roots), ax=ax,
File "/path/to/cobaya/getdist/plots.py", line 1057, in add_2d_contours
density = self.sample_analyser.get_density_grid(root, param1, param2,
File "/path/to/cobaya/getdist/plots.py", line 613, in get_density_grid
density = samples.get2DDensityGridData(param1.name, param2.name, num_plot_contours=conts, meanlikes=likes)
File "/path/to/cobaya/getdist/mcsamples.py", line 1812, in get2DDensityGridData
density.contours = density.getContourLevels(contours)
File "/path/to/cobaya/getdist/densities.py", line 127, in getContourLevels
return getContourLevels(self.P, contours)
File "/path/to/cobaya/getdist/densities.py", line 51, in getContourLevels
raise DensitiesError("Contour level outside plotted ranges")
getdist.densities.DensitiesError: Contour level outside plotted ranges

I'm attaching the python script I'm using to produce the plot.
Could someone please help me solve this issue?
Attachments
Screenshot from 2022-10-31 15-03-15.png
Screenshot from 2022-10-31 15-03-15.png (72.8 KiB) Viewed 70 times

Antony Lewis
Posts: 1842
Joined: September 23 2004
Affiliation: University of Sussex
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Re: COBAYA: Contour level outside plotted ranges

Post by Antony Lewis » November 02 2022

Looks like your a and derived_a parameters are the same.

Ali Rida Khalife
Posts: 2
Joined: October 31 2022
Affiliation: Institut d'Astrophysique de Paris

Re: COBAYA: Contour level outside plotted ranges

Post by Ali Rida Khalife » November 02 2022

Thanks Antony for the reply! I'm using the exact same input file as given in the Quick example https://cobaya.readthedocs.io/en/latest/example.html in cobaya. So they are already the same in the example?

Antony Lewis
Posts: 1842
Joined: September 23 2004
Affiliation: University of Sussex
Contact:

Re: COBAYA: Contour level outside plotted ranges

Post by Antony Lewis » November 02 2022

The example doesn't plot a and derived_a at the same time though.

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