CosmoMC: Warning from GetDist

Use of Healpix, camb, CLASS, cosmomc, compilers, etc.
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Mario Acero
Posts: 28
Joined: November 15 2006
Affiliation: Universidad del Atlantico
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CosmoMC: Warning from GetDist

Post by Mario Acero » October 19 2007

Hello,
In using getdist to make the analysis of the .tex file, it is producing the following Warning messages:

Code: Select all

 Warning: sharp edge in parameter 6 - check limits6
 Warning: sharp edge in parameter 8 - check limits8
 Warning: sharp edge in parameter 18 - check limits18
 Warning: sharp edge in parameter 18 - check limits18
 Warning: sharp edge in parameter 20 - check limits20
It seems that there is not any error, but I don't understand the meaning of this warning messages.
Could you explain me, please?

Best,

MarioAAO

Antony Lewis
Posts: 1501
Joined: September 23 2004
Affiliation: University of Sussex
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Re: CosmoMC: Warning from GetDist

Post by Antony Lewis » October 19 2007

It means your marginalized distributions are not going smoothly to zero at both ends, and the parameter does not have a fixed prior limit set. Most often this is because you have a hard prior on a parameter (e.g. w<-1), but have a missing limitsxxx setting in the getdist input file.

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