[libreoffice-users] Re: Can't Sum() time measurements

Am 08.08.2012 18:12, teknow wrote:
> I have a list of measured times in [H]:MM:SS format and I would like to sum
> them.  If I put in a formula:
>
> = B2+B3+B4+B5
>
> it works, but if I try:
>
> =Sum(B2:B5)
>
> I get "00:00:00" as a result.  What am I missing?
>
> I have tried both LibO 3.5.5.3 and 3.6.0.4
>
> Thanks.


Works for me with all numbers but not with text:
> http://www.mediafire.com/file/la4iwk9q3vm64be/times_add.ods


LibreOffice and Excel suffer from the same bug. They do an implicit 
conversion from string to number when arithmetic operators are used with 
strings. The arithmetic functions are designed to ignore all strings.
A properly programmed spreadsheet application would never convert any 
string unless you tell it to do so and it would throw a #VALUE! error 
whenever a string comes in the way of an arithmetic operation.
Unfortunately, typical Excel users prefer easy data over correct ones 
which leads to massive confusion about very simple facts.



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