[R] How to measure level of similarity of two data frames

[Lamke]

Hi group,

I've been thinking of calculating euclidean distance between each column of
a data frames that each consists of standardized numerical columns. 
However, I don't know if there's a way of summarizing the overall distance
by some kind of metrics.  If anyone know a proper way of doing so and/or a
package I would greatly appreciate your suggestions.  Thanks very much!

Kel

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