python - Constructing Zipf Distribution with matplotlib, trying to draw fitted line -

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i have list of paragraphs, want run zipf distribution on combination.

my code below:

from itertools import * pylab import * collections import counter import matplotlib.pyplot plt   paragraphs = " ".join(targeted_paragraphs) paragraph in paragraphs:    frequency = counter(paragraph.split()) counts = array(frequency.values()) tokens = frequency.keys()  ranks = arange(1, len(counts)+1) indices = argsort(-counts) frequencies = counts[indices] loglog(ranks, frequencies, marker=".") title("zipf plot combined article paragraphs") xlabel("frequency rank of token") ylabel("absolute frequency of token") grid(true) n in list(logspace(-0.5, log10(len(counts)-1), 20).astype(int)):     dummy = text(ranks[n], frequencies[n], " " + tokens[indices[n]],     verticalalignment="bottom",     horizontalalignment="left")

at first have encountered following error reason , not know why:

indexerror: index 1 out of bounds axis 0 size 1

purpose attempt draw "a fitted line" in graph, , assign value variable. not know how add that. appreciated both of these issues.

i don't know targeted_paragraphs looks like, got error using:

targeted_paragraphs = ['a', 'b', 'c']

based on looks problem in how set for loop. you're indexing ranks , frequencies using list generated length of counts, gives off-by-one error because (as far can tell) ranks, frequencies, , counts should have same length. change loop index use len(counts)-1 below:

for n in list(logspace(-0.5, log10(len(counts)-1), 20).astype(int)):     dummy = text(ranks[n], frequencies[n], " " + tokens[indices[n]],     verticalalignment="bottom",     horizontalalignment="left")

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