# isdef

##

Last updated Sun Sep 19 11:54:40 1999

Check if a variable is defined

## 1. SYNOPSIS

a = isdef(w)

## 2. DESCRIPTION

This function checks if a variable is defined. With higher version of Matlab, it has become obsolete, as one can use the Matlab function exist.

## 3. PARAMETERS

w

  The output of Matlab function who.

var

  A string containing the variable name.

## 4. RETURNS

a

  An array with 1 if the corresponding variable is defined,0 otherwise.

## 5. AUTHORS

Pierre Jaccard, Geophysical Institute, University of Bergen, 1999