computing frequency*rank

I have managed to plot a histogram of the frequency of top-100 words (I managed to get the top 100 words using topkwords in Text Analytics Toolbox). How can I

1) compute the frequency*rank for every word and,

2) plot (frequency, 1/rank).

Answer 1

[Christopher Creutzig]

Assuming we have

t = topkwords(bag,100);

You can get frequency*rank as:

t.FreqTimesRank = (1:size(t,1)).*t.Count;

And you can plot frequency against 1/rank by calliong:

plot(t.Count,1./(1:size(t,1)))