isna

Test whether a value is #N/A.

Syntax

v = isna(value)

Description

Returns true if value is the #N/A (not available) error specifically.

Example

isna(NA())               % 1

See also

• iserror — Test whether a value is any error.
• iserr — Test for any error except #N/A.
• na — Return the #N/A error value.