HIST - the B histogram package.

Description:

The B histogram package gives the B programmer a convenient method of displaying data on the frequency of occurrence of certain events. Six functions may be called.

histinit: is used to initialize a histogram.
histogram: is used to add a value to be included in preparing the histogram.
histprint: is used to print the histogram which has thus far been accumulated.
histdestroy: is used to delete a histogram and recover associated space.
histitle: allows the user to supply his own titles to histogram entries.
histheader: allows the user to supply his own histogram header routine.

The histogram package is included as part of the standard B library. The package uses the external ".histc" to define the character for printing the bar graph. The default character is ']'. The user may change this character by changing the value of ".histc".

Examples:

The following is a program to gather a histogram of the line lengths in a file:

main() {
    auto hg,in[64];
    hg = histinit(1);
    while( getstr(in)>0 ) histogram( hg,length(in) );
    histprint( hg,1,"line lengths" );
    histdestroy(hg);
}

HIST - the B histogram package.

Description:

Examples:

See Also: