pareto
Pareto chart
Syntax
pareto(Y)
pareto(Y,names)
pareto(Y,X)
pareto(ax,..)
H = pareto(...)
[H,ax] = pareto(...)
Description
Pareto charts display the values in the vector Y as bars drawn in
descending order. Values in Y must be nonnegative and not include
NaNs. By default, either the tallest 10 bars or first 95% of the
cumulative distribution is displayed, whichever is smaller.
pareto(Y) labels each bar
with its element index in Y and also plots a line
displaying the cumulative sum of Y.
pareto(Y,names) labels
each bar with the associated text in the matrix or cell array names.
pareto(Y,X) labels each
bar with the associated value from X.
pareto(ax,..) plots into the axes ax rather than the
current axes, gca.
pareto(...,threshold) specifies a threshold value between
0 and 1. The threshold is the fraction of the
cumulative histogram to include in the chart. The chart displays a maximum of ten bars,
regardless of the threshold value.
H = pareto(...) returns
the primitive Line and Bar objects
created.
[H,ax] = pareto(...) additionally
returns the two axes objects created.
Examples
Create Pareto Chart
Create a Pareto chart of vector y.
y = [90,75,30,60,5,40,40,5]; figure pareto(y)
pareto displays the elements in y as bars in descending order and labels each bar with its index in y. Since pareto displays only the first 95% of the cumulative distribution, some elements in y are not displayed.
Label Bars in Pareto Chart
Examine the cumulative productivity of a group of programmers to see how normal its distribution is. Label each bar with the name of the programmer.
codelines = [200 120 555 608 1024 101 57 687];
coders = {'Fred','Ginger','Norman','Max','Julia','Wally','Heidi','Pat'};
figure
pareto(codelines, coders)
title('Lines of Code by Programmer')
Display All the Values in the Cumulative Distribution
Create a Pareto chart that examines the preferred types of pie in a survey of 200 participants. Include all the values in the cumulative distribution by setting the threshold argument to 1.
pies = {'Chocolate','Apple','Pecan','Cherry','Pumpkin'};
votes = [35 50 30 5 80];
pareto(votes,pies,1)
ylabel('Votes')