CALL LOGISTIC Routine

Applies the logistic function to each argument.

Category:

Mathematical

Syntax

CALL LOGISTIC(argument<, argument, ...> );

Required Argument

argument

is a numeric variable.

Restriction

The CALL LOGISTIC routine only accepts variables as valid arguments. Do not use a constant or a SAS expression because the CALL routine is unable to update these arguments.

Details

The CALL LOGISTIC routine replaces each argument by the logistic value of that argument. For example

x_{j}

is replaced by

\begin{matrix} \frac{ε^{x_{j}}}{1 + ε^{x_{j}}} \end{matrix}

If any argument contains a missing value, then CALL LOGISTIC returns missing values for all the arguments.

Example

The following SAS statements produce these results.

SAS Statement	Result
x=0.5; y=-0.5; call logistic(x,y); put x= y=;	x=0.6224593312 y=0.3775406688

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