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cov_to_corr

gammapy.stats.cov_to_corr(covariance)

Compute correlation matrix from covariance matrix.

The correlation matrix $c$ is related to the covariance matrix $\sigma$ by:

$$c_{ij} = \frac{\sigma_{ij}}{\sqrt{\sigma_{ii} \sigma_{jj}}}$$

Parameters:

covariance : ndarray

Covariance matrix

Returns:

correlation : ndarray

Correlation matrix