Optional Arguments

FREQ= numeric-variable

specifies how many times observations are repeated for computational purposes. Each observation is repeated n times for computational purposes, where n is the value of the numeric variable. If n is not an integer, then it is truncated to an integer. If n is less than 1 or missing, then it is excluded from the analysis.

LEGENDLABEL= “text-string”

specifies a label that identifies the density plot in the legend. By default, the label identifies the type of density curve. If you specify TYPE=NORMAL, then the default label is “Normal.” If you specify TYPE=KERNEL, then the default label is “Kernel.”

Note:User-specified parameters from the TYPE= option are included in the label by default.

LINEATTRS= style-element <(options)> | (options)

specifies the appearance of the density line. You can specify the appearance by using a style element or by using suboptions. If you specify a style element, you can also specify suboptions to override specific appearance attributes.

options can be one or more of the following:

COLOR= color

specifies the color of the line. You can specify colors using the same color schemes that are supported by SAS/GRAPH software. For more information, see Color-Naming Schemes in SAS/GRAPH: Reference.

Default:The default color is specified by the ContrastColor attribute of the GraphFit style element in the current style.

PATTERN= line-pattern

specifies the line pattern for the line. You can reference SAS patterns by number or by name. For a list of line patterns, see Line Patterns.

Default:The default line pattern is specified by the LineStyle attribute of the GraphFit style element in the current style.

THICKNESS= n <units>

specifies the thickness of the line. You can also specify the unit of measure. The default unit is pixels. For a list of measurement units that are supported, see Units of Measurement.

Default:The default line thickness is specified by the LineThickness attribute of the GraphFit style element in the current style.

NAME= “text-string”

specifies a name for the plot. You can use the name to refer to this plot in other statements.

Note:The name is case-sensitive. When you refer to the specified name in other statements, you must use the same exact capitalization.

SCALE= COUNT | DENSITY | PERCENT | PROPORTION

specifies the scaling that is used for the response axis. Specify one of the following values:

COUNT

the axis displays the frequency count.

DENSITY

the axis displays the density estimate values.

PERCENT

the axis displays values as a percentage of the total.

PROPORTION

the axis displays values in proportion to the total.

Default:PERCENT

TRANSPARENCY= numeric-value

specifies the degree of transparency for the density curve. Specify a value from 0.0 (completely opaque) to 1.0 (completely transparent).

Default:0.0

TYPE = NORMAL < (normal-opts)>| KERNEL < (kernel-opts)>

specifies the type of distribution curve that is used for the density plot. Specify one of the following keywords:

NORMAL < (normal-opts)>

specifies a normal density estimate, with a mean and a standard deviation.

normal-opts can be one or more of the following values:

MU=numeric-value

specifies the mean value that is used in the density function equation. By default, the mean value is calculated from the data.

SIGMA=numeric-value

specifies the standard deviation value that is used in the density function equation. The value that you specify for the SIGMA= suboption must be a positive number. By default, the standard deviation value is calculated from the data.

KERNEL < (kernel-opts)>

specifies a nonparametric kernel density estimate.

kernel-opts can be:

C= numeric-value

specifies the standardized bandwidth for a number that is greater than 0 and less than or equal to 100.

The value that you specify for the C= suboption affects the value of λ as shown in the following equation:

In this equation c is the standardized bandwidth, Q is the interquartile range, and n is the sample size.

WEIGHT= NORMAL | QUADRATIC | TRIANGULAR

specifies the weight function. You can specify either normal, quadratic, or triangular weight function.

Default:NORMAL

Default:NORMAL