Matrix aggregations produce a matrix result from multiple fields. They do not support scripting. Let's cover the different types of matrix aggregations.

# Matrix aggregations

# Matrix stats

The aggregation computes the following statistics:

`count`: The number of samples per field`mean`: The average value for each field`variance`: The deviation of the samples from the mean per field`skewness`: The measurement quantifying the asymmetric distribution per field`kurtosis`: The measurement quantifying the shape of distribution per field`covariance`: The matrix that describes how changes in fields are associated with one another`correlation`: The covariance matrix from -1 to 1; describes the relationship between field distributions

It...