reading the triangle plots

Use of Cobaya. camb, CLASS, cosmomc, compilers, etc.
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Cien Shang
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Joined: March 06 2010
Affiliation: Physics Department, Columbia Univeristy
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reading the triangle plots

Post by Cien Shang » March 10 2012

hi,

this is probably a very dumb question. i am using cosmomc as a generic sampler and produced a few triangle plots. in the 2-D plots, there are both contours and shadings. and i understand the contours are the confidence limits while the shadings show the likelihood distribution of the sample. Presumably, these two should follow each other. but i do see sometimes they differ. what is causing this?

similarly for the 1 D plots, the solid and dotted curves sometimes differ a lot. why?

Thanks.

Antony Lewis
Posts: 1941
Joined: September 23 2004
Affiliation: University of Sussex
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Re: reading the triangle plots

Post by Antony Lewis » March 10 2012

See appendix C of astro-ph/0205436.

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