CosmoloGUI Readme

This version March 2006. Check the web page for the latest version.


CosmoloGUI is a MATLAB Graphical User Interface to the samples files generated by the CosmoMC executable. The scripts are included in the mscripts directory of the CosmoMC package or can be downloaded separately. CosmoloGUI complements GetDist in that it is interactive, although there are many features in GetDist that are not included in CosmoloGUI, such as convergence diagnostics.


Contents

Quickstart

Suggested sanity checks

Command line interface

Frequently Asked Questions

  1. What is the dashed line on the plot of Probability against parameter value? As in getdist, this is the mean likelihood for the samples with that parameter value (normalised to unity at the peak). See the CosmoMC FAQ for more information.

  2. What if I am using a samples file generated with a pre- March 2004 version of CosmoMC, or am compiling with params_H.f90? When loading samples, you need to change the .names file used from CMB.names to H.names. To do this, click on the box marked CMB.names and choose H.names from the list of files you are shown.

  3. I get an error message when recording a movie using the "Save Movie" button. Unfortunately this happens with some older versions of matlab under Linux.

  4. What if I have changed the parameters of CosmoMC? If you have modified cosmomc such that it outputs more or different columns in the .txt file then you will need to make some changes so that the correct parameter names are shown by CosmoloGUI. Copy eg. CMB.names to a new file eg. CMBmodified.names. Edit this file so that each line gives the parameter name of each column of your .txt file.

  5. How can I convert the avi file to an mpeg? The mpg files linked to in the screenshots were made using the free version of Fx MPEG Writer running under Windows XP.

Sarah Bridle.