Last updated 19 Nov 97
PLOTIT will plot a histogram for task, module or case factors. Descriptive statistics such as mean, standard deviation, skewness and kurtosis are included with the histogram. Additionally, a frequency distribution print may be created for each factor.
Program Invocation
The specific syntax for program invocation varies between operating systems. This document diplays the code for the AIX version.
opt: Program Options (none currently supported) ssss: The study number TFf: Input Task, Module, or Case Factor file.
PLOTIT Control Card
PLOTIT: cc 01-06 The literal 'PLOTIT' study: cc 08-11 The study number for this run title: cc 13-71 The report title for this run.
Histogram Cards
Each histogram to be plotted needs two input cards, a TITLE card to name the histogram and a PLOT card which can be used to change any of several print parameters.
TITLE Card
TITLE: cc 01-05 The literal 'TITLE' title: cc 07-80 The T3 title line for the histogram
PLOT Card
PLOT: cc 01-04 The literal 'PLOT' vec: cc 06-11 The factor name typ: cc 13-15 The factor type. If PSM is specified, a histogram for percent time spent by members performing is plotted. st: cc 17 Non-blank value suppresses print of cumulative stats. fq: cc 19 Non-blank value suppresses print of frequency distribution. dp: cc 21 Non-blank value drops the minimum value from the computation of mean and sds for the total group. mn: cc 23-30 Minimum value for histogram print. Default = the actual minimum of the factor values. mx: cc 32-39 Maximum value for histogram print. Default = the actual maximum of the factor values. int: cc 41-48 The number of intervals in the histogram. Default=100 den: cc 50-57 The plot density of the histogram. This value is the percentage of intervals to be non-zero. Default=.50 mod: cc 59-66 The minimum modal frequency for the histogram. The number of intervals is decreased until the modal frequency is greater than this value. Default = 10.
These cards are terminated by an end-of-file or an '@eof' image.
@codap plotit - ssss tf100 PLOTIT ssss This is the main title TITLE Histogram for PTS by Members Performing PLOT GP0001 PSM 1 80.0 @EOF
This run of PLOTIT will create a histogram for the GP0001/PTS factor, but only for members performing. No cumulative statistics will be graphed, and the plot density of the graph has been set to 80 percent, which means that the number of intervals will be reduced until at least 80 percent of the intervals are non-zero.