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I'm using the Orange gui and have been asked to generate basic plots where values relative to a "mean" or "Percentile Rank" are colorized.

I looked in Feature Constructor, but as far as I could tell it lacks a way to calculate the total number of rows, or instances of incoming data.

I've looked elsewhere for widgets that might help and stumbled upon Box Plot, however, if one attaches a Data Table to the output of Box Plot, we can see that no new columns contain the values of the mean or standard deviation are generated.

Is there some widget that has a function that can output these values, or the total number of rows selected / in the data set so that I can write my own function?

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Python Script widget looks like it might fit your needs, where, according to the docs, a code like this should give you the number of rows in a data set:

n_rows = len(in_data)
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