COMPHISTOGRAM Statement: CAPABILITY Procedure

Summary of Options

The following tables list the COMPHIST statement options by function. For complete descriptions, see Dictionary of Options.

Distribution Options

Table 5.13 lists the options for requesting that a fitted normal distribution or a kernel density estimate be overlaid on the comparative histogram.

Table 5.13 Density Estimation Options
Option	Description
KERNEL(kernel-options)	fits kernel density estimates
NORMAL(normal-options)	fits normal distribution with mean $\text{[math]}$ and standard deviation $\text{[math]}$

You can specify the secondary options listed in Table 5.14 in parentheses after the KERNEL option to control features of kernel density estimates.

Table 5.14 Kernel-Options
Option	Description
C=	specifies standardized bandwidth parameter $\text{[math]}$ for kernel density estimate
COLOR=	specifies color of the kernel density curve
FILL	fills area under kernel density curve
K=	specifies NORMAL, TRIANGULAR, or QUADRATIC kernel
L=	specifies line type used for kernel density curve
LOWER=	specifies lower bound for kernel density curve
UPPER=	specifies upper bound for kernel density curve
W=	specifies line width for kernel density curve

You can specify the secondary options listed in Table 5.15 in parentheses after the NORMAL option to control features of fitted normal distributions.

Table 5.15 Normal-Options
Option	Description
COLOR=	specifies color of normal curve
FILL	fills area under normal curve
L=	specifies line type of normal curve
MU=	specifies mean $\text{[math]}$ for fitted normal curve
SIGMA=	specifies standard deviation $\text{[math]}$ for fitted normal curve
W=	specifies width of normal curve

For example, the following statements use the NORMAL option to fit a normal curve in each cell of the comparative histogram:

proc capability;
   comphistogram / class = machine
                   normal(color=red l=2);
run;

The COLOR= normal-option draws the curve in red, and the L= normal-option specifies a line style of 2 (a dashed line) for the curve. In this example, maximum likelihood estimates are computed for the normal parameters $\text{[math]}$ and $\text{[math]}$ for each cell since these parameters are not specified.

General Options

Table 5.16 General COMPHISTOGRAM Statement Options
Option	Description
Classification Options
CLASS=	specifies classification variables
CLASSKEY=	specifies key cell
MISSING1	requests that missing values of first CLASS= variable be treated as a level of that CLASS= variable
MISSING2	requests that missing values of second CLASS= variable be treated as a level of that CLASS= variable
ORDER1=	specifies display order for values of the first CLASS= variable
ORDER2=	specifies display order for values of the second CLASS= variable
Layout Options
BARLABEL=	produces labels above histogram bars
BARWIDTH=	specifies width for the bars
CLIPSPEC=	clips histogram bars at specification limits if there are no observations beyond the limits
ENDPOINTS=	labels interval endpoints and specifies how they are determined
HOFFSET=	specifies offset for horizontal axis
INTERTILE=	specifies distance between tiles
MAXNBIN=	specifies maximum number of bins displayed
MAXSIGMAS=	limits number of bins displayed to range of value standard deviations above and below mean of data in key cell
MIDPOINTS=	specifies how midpoints are determined
NCOLS=	specifies number of columns in comparative histogram
NOBARS	suppresses histogram bars
NOFRAME	suppresses frame around plotting area
NOKEYMOVE	suppresses rearrangement of cells that occurs by default with the CLASSKEY= option
NOPLOT	suppresses plot
NROWS=	specifies number of rows in comparative histogram
RTINCLUDE	includes right endpoint in interval
WBARLINE=	specifies line thickness for bar outlines
Axis and Legend Options
GRID	adds grid corresponding to vertical axis
LGRID=	specifies line style for grid requested with GRID option
NLEGEND	specifies form of the legend displayed inside tiles
NLEGENDPOS=	specifies position of legend displayed inside tiles
NOHLABEL	suppresses label for horizontal axis
NOVLABEL	suppresses label for vertical axis
NOVTICK	suppresses tick marks and tick mark labels for vertical axis
TILELEGLABEL=	specifies label displayed when _CTILE_ and _TILELG_ variables are provided in the CLASSSPEC= data set
TURNVLABELS	turns and strings out vertically characters in vertical axis labels
VAXIS=	specifies tick mark values for vertical axis
VAXISLABEL=	specifies label for vertical axis
VOFFSET=	specifies length of offset at upper end of vertical axis
VSCALE=	specifies scale for vertical axis
WAXIS=	specifies line thickness for axes and frame
WGRID=	specifies line thickness for grid
Reference Line Options
FRONTREF	draws reference lines in front of histogram bars
HREF=	specifies reference lines perpendicular to horizontal axis
HREFLABELS=	specifies labels for HREF= lines
HREFLABPOS=	specifies vertical position of labels for HREF= lines
LHREF=	specifies line style for HREF= lines
LVREF=	specifies line style for VREF= lines
VREF=	specifies reference lines perpendicular to vertical axis
VREFLABELS=	specifies labels for VREF= lines
VREFLABPOS=	specifies horizontal position of labels for VREF= lines
Text Enhancement Options
FONT=	specifies software font for text
HEIGHT=	specifies height of text used outside framed areas
INFONT=	specifies software font for text inside framed areas
INHEIGHT=	specifies height of text inside framed areas
Color and Pattern Options
CAXIS=	specifies color for axis
CBARLINE=	specifies color for outline of the bars
CFILL=	specifies color for filling bars
CFRAME=	specifies color for frame
CFRAMENLEG=	specifies the color for the frame requested by the NLEGEND option
CFRAMESIDE=	specifies color for filling frame for row labels
CFRAMETOP=	specifies color for filling frame for column labels
CGRID=	specifies color for grid lines
CHREF=	specifies color for HREF= lines
CPROP=	specifies color for proportion of frequency bar
CTEXT=	specifies color for text
CTEXTSIDE=	specifies color for row labels
CTEXTTOP=	specifies color for column labels
CVREF=	specifies color for VREF= lines
PFILL=	specifies pattern used to fill bars
Input and Output Data Set Options
ANNOKEY	applies annotation requested in ANNOTATE= data set to key cell only
ANNOTATE=	annotate data set
CLASSSPEC=	data set with specification limit information for each cell
OUTHISTOGRAM=	information on histogram intervals
Graphics Catalog Options
DESCRIPTION=	specifies description for graphics catalog member
NAME=	specifies name for plot in graphics catalog