Add-in Functions
The following describes and lists some of the available add-in functions.
You will also find a description of the OpenOffice.org Calc add-in interface in the Help. In addition, important functions and their parameters are described in the Help for the OpenOffice.org Calc add-in DLL.
Add-ins supplied
OpenOffice.org contains examples for the add-in interface of OpenOffice.org Calc.
 | In the OpenOffice.org Setup program, you can selectively deinstall the Calc Add-ins. Be aware that you will lose all functions listed under the Add-in category, and several financial and some date/time functions, if you do so. |
DAYSINMONTH
Calculates the number of days of the month in which the date entered occurs.
Syntax
DAYSINMONTH(Date)
Date: Any date in the respective month of the desired year. The Date parameter must be a valid date according to the locale settings of OpenOffice.org.
Example
DAYSINMONTH(A1) returns 29 days if A1 contains 2/17/68, a valid date for February 1968.
DAYSINYEAR
Calculates the number of days of the year in which the date entered occurs.
Syntax
DAYSINYEAR(Date)
Date: Any date in the respective year. The Date parameter must be a valid date according to the locale settings of OpenOffice.org.
Example
DAYSINYEAR(A1) returns 366 days if A1 contains 2/29/68, a valid date for the year 1968.
ISLEAPYEAR
Determines whether a year is a leap year. If yes, the function will return the value 1 (TRUE); if not, it will return 0 (FALSE).
Syntax
ISLEAPYEAR(Date)
Date: Specifies whether a given date falls within a leap year. The Date parameter must be a valid date according to the locale settings of OpenOffice.org.
Example
ISLEAPYEAR(A1) returns 1, if A1 contains 2/29/68, the valid date 29th of February 1968 in your locale setting.
You may also use ISLEAPYEAR("2/29/68").
Never use ISLEAPYEAR(2/29/68), because this would first evaluate 2 divided by 29 devided by 68, and then calculate the ISLEAPYEAR function from this small number as a serial date number.
MONTHS
Calculates the difference in months between two dates.
Syntax
MONTHS(Start date, End date, Type)
Start date: First date
End date: Second date
Type: Calculates the type of difference. Possible values include 0 (interval) and 1 (in calendar months).
ROT13
Encrypts a character string by moving the characters 13 positions in the alphabet. After the letter Z, the alphabet begins again (Rotation). By applying the encryption function again to the resulting code, you can decrypt the text.
Syntax
ROT13(Text)
Text: Enter the character string to be encrypted. ROT13(ROT13(Text)) decrypts the code.
WEEKS
Calculates the difference in weeks between two dates.
Syntax
WEEKS(Start date, End date, Type)
Start date: First date
End date: Second date
Type: Calculates the type of difference. The possible values are 0 (interval) and 1 (in numbers of weeks).
WEEKSINYEAR
Calculates the number of weeks of the year in which the date entered occurs. The number of weeks is defined as follows: a week that spans two years is added to the year in which most days of that week occur.
Syntax
WEEKSINYEAR(Date)
Date: Any date in the respective year. The Date parameter must be a valid date according to the locale settings of OpenOffice.org.
Example
WEEKSINYEAR(A1) returns 53 if A1 contains 2/17/70, a valid date for the year 1970.
YEARS
Calculates the difference in years between two dates.
Syntax
YEARS(Start date, End date, Type)
Start date: First date
End date: Second date
Type: Calculates the type of difference. Possible values are 0 (interval) and 1 (in calendar years).
Add-ins through OpenOffice.org API
Add-ins can also be implemented through the OpenOffice.org API.
Index
add-ins, functions
functions, add-ins
Function Wizard, add-ins
ISLEAPYEAR function
leap year determination
YEARS function
number of years between two dates
MONTHS function
number of months between two dates
ROT13 function
encrypting text
DAYSINYEAR function
number of days, in a specific year
DAYSINMONTH function
number of days,in a specific month of a year
WEEKS function
number of weeks,between two dates
WEEKSINYEAR function
number of weeks,in a specific year
This help text is published from the OpenOffice-Help files under the Public Documentation License 1.0.
