*Bins

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*Bins

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Purpose

To specify bins or divisions for histogram output.

Theory

Refer to Histogram Overview for further information on this feature.

Keyword Format

The format depends on whether the Max/Min or Direct specification option is being used.

Max/Min:

Two lines of data as follows:

TYPE=MAX/MIN

Minimum, Maximum, No. of Bins

 

Direct:

A single line repeated as often as necessary to define the number of bins or divisions of the histogram. A histogram is assumed to start at 0, so the first entry on the first line is assumed to be the upper end of the first bin; the second entry is the upper end of the second bin and so on. Up to 20 values may be specified on a single line.

Value, Value, Value, Value, Value, etc.

 

Table Input

Max-Min Specification

Input:

Description

Minimum:

The lower or smaller value of the two values bracketing the first or lowest bin in the histogram. The default is 0.

Maximum:

The upper or larger value of the two values bracketing the last or highest bin in the histogram.

No. of Bins:

The number of histogram bins or divisions.

Direct Specification

Input:

Description

Divisions for Histogram Output:

This entry allows you to enter values to specify how values are grouped in histogram output.

Notes

(a)If you use Max/Min specification option to define, for example, a Minimum value of 0 (the default), a Maximum of 20, and set No. of Bins to 20, then the Histogram bins are 0-1, 1-2, 2-3 and so on up to 19-20 for the 20th bin.

(b)If you use Direct specification option, you can specify up to 20 values per line, and you may use as many lines as you need to completely define your histogram. A histogram is assumed to start at 0, so the first value you specify is the upper limit of the first bin of the histogram.

(c)The bin distribution which you define applies to all histograms generated during a particular Histogram analysis. This means that if you want to generate histograms of parameters with very different magnitudes, then it may be better to do this in a series of separate analyses rather than in one Histogram run, when it might be difficult to define a bin distribution suitable for all parameters