Calculate Mahalanobis distance

[Anass]

Hello everybody,
i have a little problem, i wanted to calculate the mahalanobis distance. but i’m not sure if it’s right.

In the beginning I reduced the four parameters to two dimensions ,

then I calculated covariance matrix ,

at the end I calculated the Mohalanobis distance. but the results look like this

why there are several values under the square bracket and not only two values, i have only two dimensional values. that means the vector must have only two values.
someone can help me
thank you very much
Anass

[quaeler]

Have you looked at the node and the workflow over on the hub?

Mohalanobis – KNIME Hub

[Anass]

Hey quaeler,
yes, I have read, but I do not understand my results

[elsamuel]

You’re calculating the distance between the data in each row and the data in every other row. The end result is a matrix of distances.

[Anass]

Thank you very much elsamuel