cosmomc 2D plots

Use of Healpix, camb, CLASS, cosmomc, compilers, etc.
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Steven Pediani
Posts: 16
Joined: October 06 2008
Affiliation: University of Manchester

cosmomc 2D plots

Post by Steven Pediani » July 16 2009

I've added the equation of state, and the effective sound speed of dark energy to cosmomc, and the results were as I expected so I'm confident it is running correctly. However some of my 2D plots have very bumpy contours, especially the contour plot of w against sound speed, i.e. not smooth contours like omegav against omegam. Is there anything that can be done, perhaps in the distparams.ini or params.ini files to sort out this bumpiness?

Antony Lewis
Posts: 1596
Joined: September 23 2004
Affiliation: University of Sussex

Re: cosmomc 2D plots

Post by Antony Lewis » September 08 2009

You can increase the bin size, but then of course contour locations may be less accurate. Otherwise you just need more (or better) samples.

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