Very Computer

I wonder how to plot a frequncy histogram using xmgr.
From data that is given in form of one single column
I want to produce a frequency distribution as shown below
(don't read this with a proportional font):

   DATA               HISTOGRAM

     1              ^        _
     2              |      _| |_
     3              |  _ _| | | |_ _
     3              | | | | | | | | |
     4               -------------------->
     4                 1 2 3 4 5 6 7
     4
     5
     5
     6
     7

cheers, Andreas

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