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)