DOT Statement

Syntax

option(s) can be one or options from the following categories:

• Dot options:

  	ALPHA= numeric-value
  	FREQ= numeric-variable
  	LIMITS= UPPER | LOWER | BOTH
  	LIMITSTAT= CLM | STDERR | STDDEV
  	MARKERATTRS= style-element < (options) > | (options)
  	MISSING
  	NUMSTD= n
  	RESPONSE= numeric-variable
  	STAT= FREQ | SUM | MEAN | NONE
  	WEIGHT= numeric-variable

• Plot options:

  	GROUP= variable
  	LEGENDLABEL= "text-string"
  	NAME= "text-string"
  	TRANSPARENCY= numeric-value

category-variable

specifies the variable that classifies the observations into distinct subsets.

ALPHA= numeric-value

specifies the confidence level for the confidence limits. Specify a number between 0.00 (100% confidence) and 1.00 (0% confidence).

Default:	.05
Interaction:	This option has no effect if you do not specify LIMITSTAT=CLM. If your plot is overlaid with other categorization plots, then the first ALPHA value that you specify is used for all of the plots.

FREQ= numeric-variable

specifies that 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.

Interaction:

If your plot is overlaid with other categorization plots, then the first FREQ variable that you specified is used for all of the plots.

GROUP= variable

specifies a classification variable to divide the values into groups. A separate plot is created for each unique value of the classification variable.

LEGENDLABEL= "text-string"

specifies the label that identifies the dot plot in the legend. By default, the label of the RESPONSE= variable is used. If there is no response variable label, then the name of the response variable and the computed statistic (SUM or MEAN) is used. If the RESPONSE= option is not used, the legend label is "Frequency".

Interaction:

The LEGENDLABEL= option has no effect if you also specify the GROUP= option in the same plot statement.

LIMITS= UPPER | LOWER | BOTH

specifies which limit lines to display. Limits are displayed as heavier line segments with a serif at the end extending vertically from each dot. Upper limits extend above the dot and lower limits extend below the dot. By default, no limits are displayed unless you specify either the LIMITS= or LIMITSTAT= option. If you specify the LIMITSTAT= option only, then LIMITS=BOTH is the default. Specify one of the following values:

BOTH

adds lower and upper limit lines to the plot.

LOWER

adds lower limit lines to the plot.

UPPER

adds upper limit lines to the plot.

By default, no limit lines are displayed. However, if you specify the LIMITSTAT= option, then the default is BOTH.

Interaction:

Limit lines are displayed only when you specify STAT= MEAN.

LIMITSTAT= CLM | STDDEV | STDERR

specifies the statistic for the limit lines. Specify one of the following statistics:

CLM

confidence limits

STDDEV

standard deviation

STDERR

standard error

Default:	CLM
Interaction:	If you specify the LIMITSTAT= option only, then the default value for the LIMITS= option is BOTH. Limits lines are displayed only when you specify STAT=MEAN.

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

specifies the appearance of the markers in the plot. You can specify the appearance by using a style element or by using suboptions. If you specify a style element, you can additionally specify suboptions to override specific appearance attributes.

options can be one or more of the following:

COLOR= color

specifies the color of the markers. For more information about specifying colors, see SAS/GRAPH Colors and Images in the SAS/GRAPH Software: Reference, Volumes 1 and 2.

Default:

For ungrouped data, the default color is specified by the ContrastColor attribute of the GraphDataDefault style element in the current style. For grouped data, the default color is specified by the ContrastColor attribute of the GraphData1 ... GraphDatan style elements in the current style.

SIZE= n <units >

specifies the size of the markers. You can also specify the unit of measurement. The default unit is pixels. See Units of Measurement for a list of the measurement units that are supported.

Default:

The default marker size is specified by the MarkerSize attribute of the GraphDataDefault style element in the current style.

SYMBOL= symbol-name

specifies the symbol for the markers. See Marker Symbols for a list of valid marker symbols.

Default:

For ungrouped data, the default marker symbol is specified by the MarkerSymbol attribute of the GraphDataDefault style element in the current style. For grouped data, the default marker symbol is specified by the MarkerSymbol attribute of the GraphData1 ... GraphDatan style elements in the current style.

MISSING

processes missing values as valid category value and creates a dot for it.

NAME= "text-string"

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

NUMSTD= n

specifies the number of standard units for the limit lines, when you specify LIMITSTAT= STDDEV or LIMITSTAT= STDERR. You can specify any positive number, including decimals.

Default:

1

RESPONSE= response-variable

specifies a numeric response variable for the plot. The summarized values of the response variable for each category value are displayed on the horizontal axis.

STAT= FREQ | MEAN | SUM

specifies the statistic for the horizontal axis. Specify one of the following statistics:

FREQ

the frequencies for the category variable. This is the default value when you do not specify the RESPONSE= option.

MEAN

the mean of the response variable.

SUM

the sum of the response variable. This is the default value when you specify the RESPONSE= option.

If you do not specify the RESPONSE= option, then only the FREQ statistic can be used. If you specify the RESPONSE= option, then you can use either the SUM or MEAN statistics.

TRANSPARENCY= numeric-value

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

Default:

0.0

WEIGHT= numeric-variable

specifies that each observation is weighted by a factor of w for computational purposes, where w is the value of the numeric variable. w can be any numeric value. If w is 0, negative or missing, then that observation is excluded from the analysis.

Interaction:

If your plot is overlaid with other categorization plots, then the first WEIGHT variable that you specified is used for all of the plots.

Copyright © 2007 by SAS Institute Inc., Cary, NC, USA. All rights reserved.