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Types: TextFile
Names: »histogram.3«
└─⟦87ddcff64⟧ Bits:30001253 CPHDIST85 Tape, 1985 Autumn Conference Copenhagen
└─⟦this⟧ »cph85dist/stat/doc/man/histogram.3«
.TH HISTOGRAM 3 "March 5, 1985" "UNIX|STAT 5.0" "UNIX Programmer's Manual" .SH NAME histogram, barhist \- histogram and frequency tables .SH SYNOPSIS .nf histogram (vec, n, hist, freq, prop, base, interval) float *vec; double base; double interval; .fi .SH DESCRIPTION .I Histogram creates a frequency count of the values in vec and passes it and a bin count to \fIbarhist\fR. If \fIinterval\fR is 0.0, a number is cleverly chosen. The number of bins is calculated to be .ce max (1, (max(vec)-min(vec))/interval) .SH SYNOPSIS .nf barhist (count, bins, hist, freq, prop, base, interval) int *count; double base; double interval; .fi .SH DESCRIPTION .I Barhist plots the frequencies in \fIcount\fR which is assumed to have \fIbins\fR entries. For each bin, .I barhist computes a midpoint of the bin .ce midpoint = base + interval/2 + bin*interval. If \fIfreq\fR is 1, frequency counts are printed. If \fIfreq\fR is greater than 1, cumulative counts are added. \fIProp\fR works similarly for proportions. If \fIhist\fR is 1, freq[bin] dashes are printed beside each midpoint. If \fIhist\fR is greater than 1, it is assumed to be the maximum width of the histogram. All these options can be combined, but the display can run off the page if you are not careful. A good value for \fIhist\fR might be: .ce 70 - freq * 10 - prop * 10 .SH AUTHOR Gary Perlman