Summary of Options

PROBPLOT Statement

Summary of Options

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

Distribution Options

Table 9.1 summarizes the options for requesting a specific theoretical distribution.

Table 9.1: Keywords to Select a Theoretical Distribution

BETA(beta-options)	specifies beta probability plot for shape parameters $\alpha$ , $\beta$ specified with mandatory ALPHA= and BETA= beta-options
EXPONENTIAL(exponential-options)	specifies exponential probability plot
GAMMA(gamma-options)	specifies gamma probability plot for shape parameter $\alpha$ specified with mandatory ALPHA= gamma-option
LOGNORMAL(lognormal-options)	specifies lognormal probability plot for shape parameter $\sigma$ specified with mandatory SIGMA= lognormal-option
NORMAL(normal-options)	specifies normal probability plot
WEIBULL(Weibull-options)	specifies three-parameter Weibull probability plot for shape parameter c specified with mandatory C= Weibull-option
WEIBULL2(Weibull2-options)	specifies two-parameter Weibull probability plot

Table 9.2 through Table 9.9 summarize options that specify distribution parameters and control the display of a distribution reference line. Specify these options in parentheses after the distribution option. For example, the following statements use the NORMAL option to request a normal probability plot with a distribution reference line:

   proc capability data=measures;
      probplot length / normal(mu=10 sigma=0.3 color=red);
   run;

The MU= and SIGMA= normal-options display a distribution reference line that corresponds to the normal distribution with mean $\mu_0=10$ and standard deviation $\sigma_0=0.3$ , and the COLOR= normal-option specifies the color for the line.

Table 9.2: Reference Line Options Available with All Distributions

COLOR=color	specifies color of distribution reference line
L=linetype	specifies line type of distribution reference line
SYMBOL='character'	specifies plotting character for line printer
W=n	specifies width of distribution reference line

Table 9.3: Beta-Options

ALPHA=value-list\|EST	specifies mandatory shape parameter $\alpha$
BETA=value-list\|EST	specifies mandatory shape parameter $\beta$
SIGMA=value\|EST	specifies $\sigma_0$ for distribution reference line
THETA=value\|EST	specifies $\theta_0$ for distribution reference line

Table 9.4: Exponential-Options

SIGMA=value\|EST	specifies $\sigma_0$ for distribution reference line
THETA=value\|EST	specifies $\theta_0$ for distribution reference line

Table 9.5: Gamma-Options

ALPHA=value-list\|EST	specifies mandatory shape parameter $\alpha$
SIGMA=value\|EST	specifies $\sigma_0$ for distribution reference line
THETA=value\|EST	specifies $\theta_0$ for distribution reference line

Table 9.6: Lognormal-Options

SIGMA=value-list\|EST	specifies mandatory shape parameter $\sigma$
SLOPE=value\|EST	specifies slope of distribution reference line
THETA=value\|EST	specifies $\theta_0$ for distribution reference line
ZETA=value\|EST	specifies $\zeta_0$ for distribution reference line (slope is $\exp(\zeta_0)$ )

Table 9.7: Normal-Options

MU=value\|EST	specifies $\mu_0$ for distribution reference line
SIGMA=value\|EST	specifies $\sigma_0$ for distribution reference line

Table 9.8: Weibull-Options

C=value-list\|EST	specifies mandatory shape parameter c
SIGMA=value\|EST	specifies $\sigma_0$ for distribution reference line
THETA=value\|EST	specifies $\theta_0$ for distribution reference line

Table 9.9: Weibull2-Options

C=value\|EST	specifies c₀ for distribution reference line (slope is 1/c₀)
SIGMA=value\|EST	specifies $\sigma_0$ for distribution reference line (intercept is $\log(\sigma_0)$ )
SLOPE=value\|EST	specifies slope of distribution reference line
THETA=value	specifies known lower threshold $\theta_0$

General Options

Table 9.10 through Table 9.12 list options that control the appearance of the plots.

Table 9.10: General Plot Layout Options

GRID	specifies reference lines perpendicular to the percentile axis at major tick marks
HREF=value-list	specifies reference lines perpendicular to the horizontal axis
HREFLABELS= 'label1' ... 'labeln'	specifies line labels for HREF=lines
LEGEND=name \| NONE	identifies LEGEND statement
NADJ=value	adjusts sample size (N) when computing percentiles
NOFRAME	suppresses frame around plotting area
NOLEGEND	suppresses legend
NOLINELEGEND	suppresses distribution reference line information in legend
NOSPECLEGEND	suppresses specifications information in legend
PCTLMINOR	requests minor tick marks for percentile axis
PCTLORDER=value-list	specifies tick mark labels for percentile axis
RANKADJ=value	adjusts ranks when computing percentiles
ROTATE	switches horizontal and vertical axes
SQUARE	displays plot in square format
VREF=value-list	specifies reference lines perpendicular to the vertical axis
VREFLABELS= 'label1' ... 'labeln'	specifies line labels for VREF= lines

Table 9.11: Options to Enhance Plots Produced on Line Printers

GRIDCHAR='character'	specifies character for GRID lines
HREFCHAR='character'	specifies character for HREF=lines
NOOBSLEGEND	suppresses legend for hidden points
PROBSYMBOL='character'	specifies character for plotted points
VREFCHAR='character'	specifies character for VREF= lines

Table 9.12: Options to Enhance Plots Produced on Graphics Devices

ANNOTATE=SAS-data-set	provides an annotate data set
CAXIS=color	specifies color for axis
CFRAME=color	specifies color for frame
CHREF=color	specifies color for HREF=lines
CTEXT=color	specifies color for text
CVREF=color	specifies color for VREF= lines
DESCRIPTION='string'	specifies description for graphics catalog member
FONT=font	specifies software font for text
HAXIS=name	identifies AXIS statement for horizontal axis
HMINOR=n	specifies number of minor tick marks on horizontal axis
LGRID=linetype	specifies line type for GRID lines
LHREF=linetype	specifies line type for HREF=lines
LVREF=linetype	specifies line type for VREF= lines
NAME='string'	specifies name for plot in graphics catalog
VAXIS=name	identifies AXIS statement for vertical axis
VMINOR=value	specifies number of minor tick marks on vertical axis

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