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2. Using the Histogram Module

To use the histogram module in a S-lang script, it is first necessary to make the functions in the package known to the interpreter via 

    () = evalfile ("histogram");
or, if the application embedding the interpreter supports the require function, 
    require ("histogram");
may be used. If there is a namespace conflict between symbols in the script and those defined in the module, it may be necessary to load the histogram package into a namespace, e.g., 
   () = evalfile ("histogram", "hist");
will place the histogram symbols into a namespace called hist.

Once the histogram module has been loaded, functions defined by the it may be used in the usual way, e.g., 

    require ("histogram");
        .
        .
    h = hist1d (points, [min(points):max(points):0.1]);
where hist1d is the 1-d histogram function.

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