Beefy Boxes and Bandwidth Generously Provided by pair Networks
There's more than one way to do things
 
PerlMonks  

Frequency table and frequencypolygon

by Anonymous Monk
on Oct 06, 2013 at 20:24 UTC ( #1057190=perlquestion: print w/replies, xml ) Need Help??
Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Hi fellow Monks
I have an array of data:
1.45 3.29 1.63 4.31 6.78 0.44 0.51 6.91 3.32 8.59 3.63 -5.30 0.61 6.31 0 7.83 -0.76 -3.33 4.24 6.90 2.40 6.27 2.01 1.56 0.45 3.86 -3.49 2.54 1.66 2.19 0.57 1.78 5.22 2.35 0.82 -0.49 1.59 -3.45 -3.27 -0.16 3.86 0.29 9.63 3.38 3.43 1.54 -0.61 -4.28 1.20 -2.94 2.90 6.17 0.35 2.20 7.31 11.63 6.83 -0.25 17.28 -4.45 5.01

and I need to first create a frequency table from them (assign them in subgroups) and then create a frequency polygon.
Are there any ready-to-use modules for these things?

Replies are listed 'Best First'.
Re: Frequency table and frequencypolygon
by kcott (Canon) on Oct 06, 2013 at 21:13 UTC

    The frequency_distribution_ref() method of Statistics::Descriptive looks like it fits the bill for your frequency table.

    You'll need to provide more information about your frequency polygon. There's lots of modules for creating graphics: what format did you want? do you have special requirements? what else can you tell us that would help us help you?

    -- Ken

      I am up to here now:
      use Statistics::Descriptive; $stat = Statistics::Descriptive::Full->new(); $stat->add_data(1.45,3.29,1.63,4.31,6.78,0.44,0.51,6.91,3.32,8.59,3.63 +,-5.30,0.61,6.31,0,7.83,-0.76,-3.33,4.24,6.90,2.40,6.27,2.01,1.56,0.4 +5,3.86,-3.49,2.54,1.66,2.19,0.57,1.78,5.22,2.35,0.82,-0.49,1.59,-3.45 +,-3.27,-0.16,3.86,0.29,9.63,3.38,3.43,1.54,-0.61,-4.28,1.20,-2.94,2.9 +0,6.17,0.35,2.20,7.31,11.63,6.83,-0.25,17.28,-4.45,5.01); %f = $stat->frequency_distribution(5); for (sort {$a <=> $b} keys %f) { print "key = $_, count = $f{$_}\n"; }

      and I get:
      key = -0.784, count = 8 key = 3.732, count = 34 key = 8.248, count = 15 key = 12.764, count = 3 key = 17.28, count = 1

      How can I plot it now? I want something like:
      http://onlinestatbook.com/2/graphing_distributions/graphics/freq_poly. +jpg

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: perlquestion [id://1057190]
Approved by kcott
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others making s'mores by the fire in the courtyard of the Monastery: (4)
As of 2016-09-26 11:18 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    Extraterrestrials haven't visited the Earth yet because:







    Results (478 votes). Check out past polls.