Specifying Condition

Condition is used to select observations to be painted. The syntax of condition is

variable compare value

or

variable compare value logical variable compare value

where

variable

is one of the following:

• a variable name in the input data set

• OBS., which is the observation number

• keyword., where keyword is a keyword for a statistic requested in the OUTPUT statement

compare

is an operator that compares variable to value. Compare can be any one of the following: <, <=, >, >=, =, =. The operators LT, LE, GT, GE, EQ, and NE, respectively, can be used instead of the preceding symbols. Refer to the "Expressions" section in SAS Language Reference: Concepts for more information about comparison operators.

value

gives an unformatted value of variable. Observations are selected to be painted if they satisfy the condition created by variable compare value. Value can be a number or a character string. If value is a character string, it must be eight characters or less and must be enclosed in quotes. In addition, value is case-sensitive. In other words, the statements

   paint name='henry';

and

   paint name='Henry';

are not the same.

logical

is one of two logical operators. Either AND or OR can be used. To specify AND, use AND or the symbol &. To specify OR, use OR or the symbol |.

Here are some examples of the variable compare value form:

   paint name='Henry';
   paint residual.>=20;
   paint obs.=99;

Here are some examples of the variable compare value logical variable compare value form:

   paint name='Henry'|name='Mary';
   paint residual.>=20 or residual.<=10;
   paint obs.>=11 and residual.<=20;

Using ALLOBS

Instead of specifying condition, the ALLOBS option can be used to select all observations. This is most useful when you want to unpaint all observations. For example,

   paint allobs / reset;

resets the symbols for all observations.

Options in the PAINT Statement

The following options can be used when either a condition is specified, the ALLOBS option is specified, or nothing is specified before the slash. If only an option is listed, the option applies to the observations selected in the previous PAINT statement, not to the observations selected by reapplying the condition from the previous PAINT statement. For example, in the statements

   paint r.>0 / symbol='a';
   reweight r.>0;
   refit;
   paint / symbol='b';

the second PAINT statement paints only those observations selected in the first PAINT statement. No additional observations are painted even if, after refitting the model, there are new observations that meet the condition in the first PAINT statement.

Note:Options are not available when either the UNDO or STATUS option is used.

You can specify the following options after a slash (/).

STATUS and UNDO

Instead of specifying condition or the ALLOBS option, you can use the STATUS or UNDO option as follows: