getdist.covmat

class getdist.covmat.CovMat(filename='', matrix=None, paramNames=None)

Class holding a covariance matrix for some named parameters

Variables:

• matrix – the covariance matrix (square numpy array)

• paramNames – list of parameter name strings

Parameters:

filename – optionally, a file name to load from

correlation()

Get the correlation matrix

Returns:

numpy array giving the correlation matrix

plot()

Plot the correlation matrix as grid of colored squares

rescaleParameter(name, scale)

Used to rescale a covariance if a parameter is renormalized

Parameters:

• name – parameter name to rescale

• scale – value to rescale by

saveToFile(filename)

Save the covariance matrix to a text file, with comment header listing the parameter names

Parameters:

filename – name of file to save to (.covmat)