Difference between revisions of "Documentation/How Tos/Calc: ISERROR function"
From Apache OpenOffice Wiki
< Documentation | How Tos
m |
(added Issues section) |
||
Line 28: | Line 28: | ||
'''[[Documentation/How_Tos/Calc: Information functions|Information functions]]''' | '''[[Documentation/How_Tos/Calc: Information functions|Information functions]]''' | ||
+ | |||
+ | === Issues: === | ||
+ | * <tt>'''CHOOSE(0;"A";"B";"C";"D")'''</tt> returns <tt>'''Err:502'''</tt> (correctly - the index is out of range) but <tt>'''ISERROR(CHOOSE(0;"A";"B";"C";"D"))'''</tt> also returns <tt>'''Err:502'''</tt>, rather than <tt>'''TRUE'''</tt>. The error is propagated rather than evaluated. |
Revision as of 13:37, 23 April 2008
ISERROR
Tests for any error value.
Syntax:
ISERROR(value)
- Returns TRUE if value refers to or evaluates to any error value, including #N/A, and FALSE otherwise.
- Use the ISERR function to test for any errors except #N/A.
Example:
ISERROR(SQRT(-1))
- returns TRUE, because taking the squareroot of -1 is an error.
ISERROR(C5)
- where C5 contains 123, returns FALSE, because 123 is not an error.
ISERROR(NA())
- returns TRUE, because NA() returns the #N/A error.
See also:
ISERR function, ISNA function, NA function
Issues:
- CHOOSE(0;"A";"B";"C";"D") returns Err:502 (correctly - the index is out of range) but ISERROR(CHOOSE(0;"A";"B";"C";"D")) also returns Err:502, rather than TRUE. The error is propagated rather than evaluated.