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Re: NEWBIE QUESTION - How to create a barchart with two data sets.

  • To: mathgroup at smc.vnet.net
  • Subject: [mg95320] Re: NEWBIE QUESTION - How to create a barchart with two data sets.
  • From: Bill Rowe <readnews at sbcglobal.net>
  • Date: Thu, 15 Jan 2009 06:12:26 -0500 (EST)

On 1/14/09 at 5:33 AM, tim at usrbs.com (Tim Heger) wrote:

>I am new to Mathematica and can't seem to figure out how to do a
>simple bar chart using 2 data sets, in Excel you either have the
>data in a series in rows or columns.

Using version 7 of Mathematica, first generate two data sets by
doing something like:

dataSet1 = RandomReal[NormalDistribution[5, 1], 100];
dataSet2 = RandomReal[NormalDistribution[7, 1], 100];

then the bar chart (which I interpret to be a histogram) can be
done as:

Histogram[{dataSet1, dataSet2}]

And if you truly do want bar charts rather than a histogram,
simply replace Histogram with BarChart. Of course with random
data as I've generated above, the plot produced by BarChart is meaningless.

With either BarChart or Histogram, there are a variety of
options available for controlling the appearance of the plot.
See the documentation for details.



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