TWiki Spreadsheet Plugin

This Plugin adds speadsheet capabilities to TWiki topics. Formulae like %CALC{"$INT(7/3)"}% are evaluated at page view time. They can be placed in table cells and outside of tables. In other words, this Plugin provides general formula evaluation capability, not just classic spreadsheet functions.

Example:

Region:	Sales:
Northeast	320
Northwest	580
South	240
Europe	610
Asia	220
Total:	1970

Interactive example:

Formula: %CALC{""}%
Result: guest

The formula next to "Total" is %CALC{"$SUM( $ABOVE() )"}%.
(you see the formula instead of the sum in case the Plugin is not installed or not enabled.)

Syntax Rules
Built-in Functions
Bug Tracking Example
Plugin Settings
Plugin Installation Instructions
Plugin Info

Syntax Rules

The action of this Plugin is triggered by the %CALC{"..."}% variable, which gets rendered according to the built-in function(s) found between the quotes.

Built-in function are of format $FUNCNAME(parameter)
Functions may be nested, e.g. %CALC{"$SUM( R2:C$COLUMN(0)..R$ROW(-1):C$COLUMN(0) )"}%
Functions are evaluated from left to right, and from inside to outside if nested
The function parameter can be text; a mathematical formula; a cell address; or a range of cell addresses
Multiple parameters form a list; they are separated by a comma, followed by optional space, e.g. %CALC{"$SUM( 3, 5, 7 )"}%
A table cell can be addressed as R1:C1. Table address matrix:

R1:C1 R1:C2 R1:C3 R1:C4

R2:C1 R2:C2 R2:C3 R2:C4
A table cell range is defined by two cell addresses separated by "..", e.g. "row 1 through 20, column 3" is: R1:C3..R20:C3
Lists can refer to values and/or table cell ranges, e.g. %CALC{"$SUM( 3, 5, $T(R1:C7), R1:C11..R1:C15 )"}%
Formulae can only reference cells in the current or preceeding row of the current table; they may not reference cells below the current table row
Formulae can also be placed outside of tables; they can reference cells in the preceeding table

Built-in Functions

Conventions for Syntax:

Required parameters are indicated in ( bold )
Optional parameters are indicated in ( bold italic )

ABOVE( ) -- address range of cells above the current cell

Syntax: $ABOVE( )
Example: %CALC{"$SUM($ABOVE())"}% returns the sum of cells above the current cell
Related: $LEFT(), $RIGHT()

ABS( num ) -- absolute value of a number

Syntax: $ABS( num )
Example: %CALC{"$ABS(-12.5)"}% returns 12.5
Related: $SIGN()

AND( list ) -- logcial AND of a list

Syntax: $AND( list )
Example: %CALC{"$AND(1, 0, 1)"}% returns 0
Related: $NOT(), $IF(), $OR()

AVERAGE( list ) -- average of a list or a range of cells

Syntax: $AVERAGE( list )
Example: %CALC{"$AVERAGE(R2:C5..R$ROW(-1):C5)"}% returns the average of column 5, excluding the title row
Related: $LIST(), $MAX(), $MEDIAN(), $MIN()

CHAR( number ) -- ASCII character represented by number

Syntax: $CHAR( number )
Example: Example: %CALC{"$CHAR(97)"}% returns a
Related: $CODE()

CODE( text ) -- ASCII numeric value of character

The ASCII numeric value of the first character in text
Syntax: $CODE( text )
Example: %CALC{"$CODE(abc)"}% returns 97
Related: $CHAR()

COLUMN( offset ) -- current column number

The current table column number with an optional offset
Syntax: $COLUMN( offset )
Example: %CALC{"$COLUMN()"}% returns 2 for the second column
Related: $ROW(), $T()

COUNTITEMS( list ) -- count individual items in a list

Syntax: $COUNTITEMS( list )
Example: %CALC{"$COUNTITEMS($ABOVE())"}% returns Closed: 1, Open: 2 assuming one cell above the current cell contains Closed and two cells contain Open
Related: $COUNTSTR(), $LIST()

COUNTSTR( list, str ) -- count the number of cells in a list equal to a given string

Count the number of cells in a list equal to a given string (if str is specified), or counts the number of non empty cells in a list
Syntax: $COUNTSTR( list, str )
Example: %CALC{"$COUNTSTR($ABOVE())"}% counts the number of non empty cells above the current cell
Example: %CALC{"$COUNTSTR($ABOVE(), DONE)"}% counts the number of cells equal to DONE
Related: $COUNTITEMS(), $LIST()

DEF( list ) -- find first non-empty list item or cell

Returns the first list item or cell reference that is not empty
Syntax: $DEF( list )
Example: %CALC{"$DEF(R1:C1..R1:C3)"}%
Related: $COUNTSTR(), $LISTIF(), $LIST()

EVAL( formula ) -- evaluate a simple formula

Addition, substraction, multiplication, division and modulus of numbers are supported. Any nesting is permitted
Syntax: $EVAL( formula )
Example: %CALC{"$EVAL( (5 * 3) / 2 + 1.1 )"}% returns 8.6
Related: $INT(), $MOD(), $ROUND(), $VALUE()

EXACT( text1, text2 ) -- compare two text strings

Compares two text strings and returns 1 if they are exactly the same, or 0 if not
Syntax: $EXACT( text1, text2 )
Example: %CALC{"$EXACT(foo, Foo)"}% returns 0
Example: %CALC{"$EXACT(foo, $LOWER(Foo))"}% returns 1
Related: $IF(), $TRIM()

FIND( string, text, start ) -- find one string within another string

Finds one text string, within another text, and returns the number of the starting position of string, from the first character of text. This search is case sensitive and is not a regular expression search; use $SEARCH() for regular expression searching. Starting position is 1; a 0 is returned if nothing is matched.
Syntax: $FIND( string, text, start )
Example: %CALC{"$FIND(f, fluffy)"}% returns 1
Example: %CALC{"$FIND(f, fluffy, 2)"}% returns 4
Example: %CALC{"$FIND(@, fluffy, 1)"}% returns 0
Related: $REPLACE(), $SEARCH()

FORMAT( type, prec, number ) -- format a number to a certain type and precision

Type can be COMMA for comma format, DOLLAR for Dollar format, NUMBER for number, and PERCENT for percent format
Syntax: $FORMAT( type, prec, number )
Example: %CALC{"$FORMAT(COMMA, 2, 12345.6789)"}% returns 12,345.68
Example: %CALC{"$FORMAT(DOLLAR, 2, 12345.67)"}% returns $12,345.68
Example: %CALC{"$FORMAT(NUMBER, 1, 12345.67)"}% returns 12345.7
Example: %CALC{"$FORMAT(PERCENT, 1, 0.1234567)"}% returns 12.3%
Related: $ROUND()

FORMATTIME( serial, text ) -- convert a serialized date into a date string

The following variables in text are expanded: $second (seconds, 00..59); $minute (minutes, 00..59); $hour (hours, 00..23); $day (day of month, 01..31); $month (month, 01..12); $mon (month in text format, Jan..Dec); $year (4 digit year, 1999); $ye (2 digit year, 99), $wd (day number of the week, 1 for Sunday, 2 for Monday, etc), $wday (day of the week, Sun..Sat), $weekday (day of the week, Sunday..Saturday), $yearday (day of the year, 1..365, or 1..366 in leap years). Date is assumed to be server time; add GMT to indicate Greenwich time zone.
Syntax: $FORMATTIME( serial, text )
Example: %CALC{"$FORMATTIME(0, $year/$month/$day GMT)"}% returns 1970/01/01 GMT
Related: $FORMATGMTIME(), $TIME(), $TIMEADD(), $TIMEDIFF(), $TODAY()

FORMATGMTIME( serial, text ) -- convert a serialized date into a GMT date string

The date string represents the time in Greenwich time zone. Same variable expansion as in $FORMATTIME().
Syntax: $FORMATGMTIME( serial, text )
Example: %CALC{"$FORMATGMTIME(1041379200, $day $mon $year)"}% returns 01 Jan 2003
Related: $FORMATTIME(), $TIME(), $TIMEADD(), $TIMEDIFF(), $TODAY()

GET( name ) -- get the value of a previously set variable

Specify the variable name (alphanumeric characters and underscores). An empty string is returned if the variable does not exist. Use $SET() to set a variable first. Unlike table ranges, variables live for the time of the page view and persist across tables, i.e. you can use it to summarize results across several tables.
Syntax: $GET( name )
Example: %CALC{"$GET(my_total)"}% returns the value of the my_total variable
Related: $SET(), $SETM()

IF( condition, value if true, value if 0 ) -- return a value based on a condition

The condition can be a number (where 0 means condition not met), or two numbers with a comparison operator < (less than), <= (less than or equal), == (equal), != (not equal), >= (greater than or equal), > (greater than).
Syntax: $IF( condition, value if true, value if 0 )
Example: %CALC{"$IF($T(R1:C5) > 1000, Over Budget, OK)"}% returns Over Budget if value in R1:C5 is over 1000, OK if not
Example: %CALC{"$IF($EXACT($T(R1:C2),), empty, $T(R1:C2))"}% returns the content of R1:C2 or empty if empty
Example: %CALC{"$SET(val, $IF($T(R1:C2) == 0, zero, $T(R1:C2)))"}% sets a variable conditionally
Related: $AND(), $EXACT(), $LISTIF(), $NOT(), $OR()

INT( formula ) -- evaluate formula and round down to nearest integer

Addition, substraction, multiplication, division and modulus of numbers are supported. Any nesting is permitted
Syntax: $INT( formula )
Example: %CALC{"$INT(10 / 4)"}% returns 2
Related: $EVAL(), $ROUND(), $VALUE()

LEFT( ) -- address range of cells to the left of the current cell

Syntax: $LEFT( )
Example: %CALC{"$SUM($LEFT())"}% returns the sum of cells to the left of the current cell
Related: $ABOVE(), $RIGHT()

LENGTH( text ) -- length of text in bytes

Syntax: $LENGTH( text )
Example: %CALC{"$LENGTH(abcd)"}% returns 4
Related: $LISTSIZE()

LIST( range ) -- convert content of a cell range into a list

Convert the content of a range of cells into a flat list, delimited by comma. Cells containing commas are merged into the list
Syntax: $LIST( range )
Example: %CALC{"$LIST($LEFT())"}% returns Apples, Lemons, Oranges, Kiwis assuming the cells to the left contain | Apples | Lemons, Oranges | Kiwis |
Related: $AVERAGE(), $COUNTITEMS(), $COUNTSTR(), $DEF(), $LISTIF(), $LISTITEM(), $LISTMAP(), $LISTREVERSE(), $LISTSIZE(), $LISTSORT(), $LISTUNIQUE(), $MAX(), $MEDIAN(), $MIN(), $PRODUCT(), $SUM(), $SUMDAYS(), $SUMPRODUCT()

LISTIF( condition, list ) -- remove elements from a list that do not meet a condition

In addition to the condition described in $IF(), you can use $item to indicate the current element, and $index for the list index, starting at 1
Syntax: $LISTIF( condition, list )
Example: %CALC{"$LISTIF($item > 12, 14, 7, 25)"}% returns 14, 25
Example: %CALC{"$LISTIF($NOT($EXACT($item,)), A, B, , E)"}% returns non-empty elements A, B, E
Example: %CALC{"$LISTIF($index > 2, A, B, C, D)"}% returns C, D
Related: $IF(), $LIST(), $LISTITEM(), $LISTMAP(), $LISTREVERSE(), $LISTSIZE(), $LISTSORT(), $LISTUNIQUE(), $SUM()

LISTITEM( index, list ) -- get one element of a list

Index is 1 to size of list; use a negative number to count from the end of the list
Syntax: $LISTITEM( index, list )
Example: %CALC{"$LISTITEM(2, Apple, Orange, Apple, Kiwi)"}% returns Orange
Example: %CALC{"$LISTITEM(-1, Apple, Orange, Apple, Kiwi)"}% returns Kiwi
Related: $COUNTITEMS(), $COUNTSTR(), $LIST(), $LISTIF(), $LISTMAP(), $LISTREVERSE(), $LISTSIZE(), $LISTSORT(), $LISTUNIQUE(), $SUM()

LISTMAP( formula, list ) -- evaluate and update each element of a list

In the formula you can use $item to indicate the element; $index to show the index of the list, starting at 1
Syntax: $LISTMAP( formula, list )
Example: %CALC{"$LISTMAP($index: $EVAL(2 * $item), 3, 5, 7, 11)"}% returns 1: 6, 2: 10, 3: 14, 4: 22
Related: $COUNTITEMS(), $COUNTSTR(), $LIST(), $LISTIF(), $LISTITEM(), $LISTREVERSE(), $LISTSIZE(), $LISTSORT(), $LISTUNIQUE(), $SUM()

LISTREVERSE( list ) -- opposite order of a list

Syntax: $LISTREVERSE( list )
Example: %CALC{"$LISTREVERSE(Apple, Orange, Apple, Kiwi)"}% returns Kiwi, Apple, Orange, Apple
Related: $COUNTITEMS(), $COUNTSTR(), $LIST(), $LISTIF(), $LISTITEM(), $LISTMAP(), $LISTSIZE(), $LISTSORT(), $LISTUNIQUE(), $SUM()

LISTSIZE( list ) -- number of elements in a list

Syntax: $LISTSIZE( list )
Example: %CALC{"$LISTSIZE(Apple, Orange, Apple, Kiwi)"}% returns 4
Related: $COUNTITEMS(), $COUNTSTR(), $LIST(), $LISTIF(), $LISTITEM(), $LISTMAP(), $LISTREVERSE(), $LISTSORT(), $LISTUNIQUE(), $SUM()

LISTSORT( list ) -- sort a list

Sorts a list in ASCII order, or numerically if all elements are numeric
Syntax: $LISTSORT( list )
Example: %CALC{"$LISTSORT(Apple, Orange, Apple, Kiwi)"}% returns Apple, Apple, Kiwi, Orange
Related: $COUNTITEMS(), $COUNTSTR(), $LIST(), $LISTIF(), $LISTITEM(), $LISTMAP(), $LISTREVERSE(), $LISTSIZE(), $LISTUNIQUE(), $SUM()

LISTUNIQUE( list ) -- remove all duplicates from a list

Syntax: $LISTUNIQUE( list )
Example: %CALC{"$LISTUNIQUE(Apple, Orange, Apple, Kiwi)"}% returns Apple, Orange, Kiwi
Related: $COUNTITEMS(), $COUNTSTR(), $LIST(), $LISTIF(), $LISTITEM(), $LISTMAP(), $LISTREVERSE(), $LISTSIZE(), $LISTSORT(), $SUM()

LOWER( text ) -- lower case string of a text

Syntax: $LOWER(text)
Example: %CALC{"$LOWER( $T(R1:C5) )"}% returns the lower case string of the text in cell R1:C5
Related: $PROPER(), $PROPERSPACE(), $TRIM(), $UPPER()

MAX( list ) - biggest value of a list or range of cells

Syntax: $MAX( list )
Example: To find the biggest number to the left of the current cell, write: %CALC{"$MAX($LEFT())"}%
Related: $LIST(), $MEDIAN(), $MIN()

MEDIAN( list ) -- median of a list or range of cells

Syntax: $MEDIAN( list )
Example: %CALC{"$MEDIAN(3, 9, 4, 5)"}% returns 4.5
Related: $LIST(), $MAX(), $MIN()

MIN( list ) -- smallest value of a list or range of cells

Syntax: $MIN( list )
Example: %CALC{"$MIN(15, 3, 28)"}% returns 3
Related: $LIST(), $MAX(), $MEDIAN()

MOD( num, divisor ) -- reminder after dividing `num` by `divisor`

Syntax: $MOD( num, divisor )
Example: %CALC{"$MOD(7, 3)"}% returns 1
Related: $EVAL(), $()

NOP( text ) -- no-operation

Useful to change the order of Plugin execution. For example, it allows preprossing to be done before %SEARCH{}% is evaluated. The percent character '%' can be escaped with $per
Syntax: $NOP( text )

NOT( num ) -- reverse logic of a number

Returns 0 if num is not zero, 1 if zero
Syntax: $NOT( num )
Example: %CALC{"$NOT(0)"}% returns 1
Related: $AND(), $IF(), $OR()

OR( list ) -- logcial OR of a list

Syntax: $OR( list )
Example: %CALC{"$OR(1, 0, 1)"}% returns 1
Related: $AND(), $IF(), $NOT()

PRODUCT( list ) -- product of a list or range of cells

Syntax: $PRODUCT( list )
Example: To calculate the product of the cells to the left of the current one use %CALC{"$PRODUCT($LEFT())"}%
Related: $LIST(), $PRODUCT(), $SUM(), $SUMPRODUCT()

PROPER( text ) -- properly capitalize trxt

Capitalize letters that follow any character other than a letter; convert all other letters to lowercase letters
Syntax: $PROPER( text )
Example: %CALC{"PROPER(a small STEP)"}% returns A Small Step
Example: %CALC{"PROPER(f1 (formula-1))"}% returns F1 (Formula-1)
Related: $LOWER(), $PROPERSPACE(), $TRIM(), $UPPER()

PROPERSPACE( text ) -- properly space out WikiWords

Properly spaces out WikiWords preceeded by white space, parenthesis, or ][. Words listed in the DONTSPACE TWikiPreferences variable or DONTSPACE Plugins setting are excluded
Syntax: $PROPERSPACE( text )
Example: Assuming DONTSPACE contains MacDonald: %CALC{"PROPERSPACE(Old MacDonald had a ServerFarm, EeEyeEeEyeOh"}% returns Old MacDonald had a Server Farm, Ee Eye Ee Eye Oh
Related: $LOWER(), $PROPER(), $TRIM(), $UPPER()

RAND( max ) -- random number

Random number, evenly distributed between 0 and max, or 0 and 1 if max is not specified
Syntax: $RAND( max )
Related: $EVAL()

REPEAT(text) -- repeat text a number of times

Syntax: $REPEAT( text )
Example: %CALC{"$REPEAT(/\, 5)"}% returns /\/\/\/\/\

REPLACE( text, start, num, new ) -- replace part of a text string

Replace num number of characters of text string text, starting at start, with new text new. Starting position is 1; use a negative start to count from the end of the text
Syntax: $REPLACE( text, start, num, new )
Example: %CALC{"$REPLACE(abcdefghijk,6,5,*)"}% returns abcde*k
Related: $FIND(), $SEARCH(), $SUBSTITUTE(), $TRANSLATE()

RIGHT( ) -- address range of cells to the right of the current cell

Syntax: $RIGHT( )
Example: %CALC{"$SUM($RIGHT())"}% returns the sum of cells to the right of the current cell
Related: $ABOVE(), $LEFT()

ROUND( formula, digits ) -- round a number

Evaluates a simple formula and rounds the result up or down to the number of digits if digits is positive; to the nearest integer if digits is missing; or to the left of the decimal point if digits is negative
Syntax: $ROUND( formula, digits )
Example: %CALC{"$ROUND(3.15, 1)"}% returns 3.2
Example: %CALC{"$ROUND(3.149, 1)"}% returns 3.1
Example: %CALC{"$ROUND(-2.475, 2)"}% returns -2.48
Example: %CALC{"$ROUND(34.9, -1)"}% returns 30
Related: $INT(), $FORMAT()

ROW( offset ) -- current row number

The current table row number with an optional offset
Syntax: $ROW( offset )
Example: To get the number of rows excluding table heading (first row) and summary row (last row you are in), write: %CALC{"$ROW(-2)"}%
Related: $COLUMN(), $T()

SEARCH( string, text, start ) -- search a string within a text

Finds one text string, within another text, and returns the number of the starting position of string, from the first character of text. This search is a RegularExpression search; use $FIND() for non-regular expression searching. Starting position is 1; a 0 is returned if nothing is matched
Syntax: $SEARCH( string, text, start )
Example: %CALC{"$SEARCH([uy], fluffy)"}% returns 3
Example: %CALC{"$SEARCH([uy], fluffy, 3)"}% returns 6
Example: %CALC{"$SEARCH([abc], fluffy,)"}% returns 0
Related: $FIND(), $REPLACE()

SET( name, value ) -- set a variable for later use

Specify the variable name (alphanumeric characters and underscores) and the value. The value may contain a formula; formulas are evaluated before the variable assignment. This function returns no output. Use $GET() to retrieve variables. Unlike table ranges, variables live for the time of the page view and persist across tables, i.e. you can use it to summarize results across several tables
Syntax: $SET( name, value )
Example: %CALC{"$SET(my_total, $SUM($ABOVE()))"}% sets the my_total variable to the sum of all table cells located above the current cell and returns an empty string
Related: $GET(), SETM()

SETM( name, formula ) -- update an existing variable based on a formula

Specify the variable name (alphanumeric characters and underscores) and the formula. The formula must start with an operator to + (add), - (subtract), * (multiply), or / (divide) something to the variable. This function returns no output. Use $GET() to retrieve variables
Syntax: $SETM( name, formula )
Example: %CALC{"$SETM(total, + $SUM($LEFT()))"}% adds the sum of all table cells on the left to the total variable, and returns an empty string
Related: $GET(), $SET()

SIGN( num ) -- sign of a number

Returns -1 if num is negative, 0 if zero, or 1 if positive
Syntax: $SIGN( num )
Example: %CALC{"$SIGN(-12.5)"}% returns -1
Related: $ABS(), $EVAL(), $INT(), $NOT()

SUBSTITUTE( text, old, new, instance, option ) -- substitute text

Substitutes new text for old text in a text string. instance specifies which occurance of old you want to replace. If you specify instance, only that instance is replaced. Otherwise, every occurance is changed to the new text. A literal search is performed by default; a RegularExpression search if the option is set to r
Syntax: $SUBSTITUTE( text, old, new, instance, option )
Example: %CALC{"$SUBSTITUTE(Good morning, morning, day)"}% returns Good day
Example: %CALC{"$SUBSTITUTE(Q2-2002,2,3)"}% returns Q3-3003
Example: %CALC{"$SUBSTITUTE(Q2-2002,2,3,3)"}% returns Q2-2003
Example: %CALC{"$SUBSTITUTE(abc123def,[0-9],9,,r)"}% returns abc999def
Related: $REPLACE(), $TRANSLATE()

SUM( list ) -- sum of a list or range of cells

Syntax: $SUM( list )
Example: To sum up column 5 excluding the title row, write %CALC{"$SUM(R2:C5..R$ROW(-1):C5)"}% in the last row; or simply %CALC{"$SUM($ABOVE())"}%
Related: $LIST(), $PRODUCT(), $SUMPRODUCT(), $WORKINGDAYS()

SUMDAYS( list ) -- sum the days in a list or range of cells

The total number of days in a list or range of cells containing numbers of hours, days or weeks. The default unit is days; units are indicated by a h, hours, d, days, w, weeks suffix. One week is assumed to have 5 working days, one day 8 hours
Syntax: $SUMDAYS( list )
Example: %CALC{"$SUMDAYS(2w, 1, 2d, 4h)"}% returns 13.5, the evaluation of (2*5 + 1 + 2 + 4/8)
Related: $SUM(), $TIME(), $FORMATTIME()

SUMPRODUCT( list, list ) -- scalar product on ranges of cells

Syntax: $SUMPRODUCT( list, list, list... )
Example: %CALC{"$SUM(R2:C1..R4:C1, R2:C5..R4:C5)"}% evaluates and returns the result of ($T(R2:C1) * $T(R2:C5) + $T(R3:C1) * $T(R3:C5) + $T(R4:C1) * $T(R4:C5))
Related: $LIST(), $PRODUCT(), $SUM()

T( address ) -- content of a cell

Syntax: $T( address )
Example: %CALC{"$T(R1:C5)"}% returns the text in cell R1:C5
Related: $COLUMN(), $ROW()

TRANSLATE( text, from, to ) -- translate text from one set of characters to another

The translation is done from a set to a set, one character by one. The text may contain commas; all three parameters are required. In the from and to parameters you can write $comma to escape comma, $sp to escape space
Syntax: $TRANSLATE( text, from, to )
Example: %CALC{"$TRANSLATE(boom,bm,cl)"}% returns cool
Example: %CALC{"$TRANSLATE(one, two,$comma,;)"}% returns one; two
Related: $REPLACE(), $SUBSTITUTE()

TIME( text ) -- convert a date string into a serialized date number

Serialized date is seconds since the Epoch, e.g. midnight, 01 Jan 1970. Current time is taken if the date string is empty. Supported date formats: 31 Dec 2009; 31 Dec 2009 GMT; 31 Dec 09; 31-Dec-2009; 31/Dec/2009; 2009/12/31; 2009-12-31; 2009/12/31; 2009/12/31 23:59; 2009/12/31 - 23:59; 2009-12-31-23-59; 2009/12/31 - 23:59:59; 2009.12.31.23.59.59. Date is assumed to be server time; add GMT to indicate Greenwich time zone
Syntax: $TIME( text )
Example: %CALC{"$TIME(2003/10/14 GMT)"}% returns 1066089600
Related: $FORMATTIME(), $FORMATGMTIME(), $TIMEADD(), $TIMEDIFF(), $TODAY(), $WORKINGDAYS()

TIMEADD( serial, value, unit ) -- add a value to a serialized date

The unit is seconds if not specified; unit can be second, minute, hour, day, week, month, year. Note: An approximation is used for month and year calculations
Syntax: $TIMEADD( serial, value, unit )
Example: %CALC{"$TIMEADD($TIME(), 2, week)"}%
Related: $(), $() returns the serialized date two weeks from now
Related: $FORMATTIME(), $FORMATGMTIME(), $TIME(), $TIMEDIFF(), $TODAY()

TIMEDIFF( serial_1, serial_2, unit ) -- time difference between two serialized dates

The unit is seconds if not specified; unit can be specified as in $TIMEADD(). Note: An approximation is used for month and year calculations. Use $FORMAT() or $INT() to format real numbers
Syntax: $TIMEDIFF( serial_1, serial_2, unit )
Example: %CALC{"$TIMEDIFF($TIME(), $EVAL($TIME()+90), minute)"}% returns 1.5
Related: $FORMAT(), $FORMATTIME(), $FORMATGMTIME(), $INT(), $TIME(), $TIMEADD(), $TODAY(), $WORKINGDAYS()

TODAY( ) -- serialized date of today at midnight GMT

In contrast, the related $TIME() returns the serialized date of today at the current time, e.g. it includes the number of seconds since midnight GMT
Syntax: $TODAY( )
Example: %CALC{"$TODAY()"}% returns the number of seconds since Epoch
Related: $FORMATTIME(), $FORMATGMTIME(), $TIME(), $TIMEADD(), $TIMEDIFF()

TRIM( text ) -- trim spaces from text

Removes all spaces from text except for single spaces between words
Syntax: $TRIM( text )
Example: %CALC{"$TRIM( eat spaces )"}% returns eat spaces
Related: $EXACT(), $PROPERSPACE()

UPPER( text ) -- upper case string of a text

Syntax: $UPPER( text )
Example: %CALC{"$UPPER($T(R1:C5))"}% returns the upper case string of the text in cell R1:C5
Related: $LOWER(), $PROPER(), $PROPERSPACE(), $TRIM()

VALUE( text ) -- convert text to number

Extracts a number from text. Returns 0 if not found
Syntax: $VALUE( text )
Example: %CALC{"$VALUE(US$1,200)"}% returns 1200
Example: %CALC{"$VALUE(PrjNotebook1234)"}% returns 1234
Example: %CALC{"$VALUE(Total: -12.5)"}% returns -12.5
Related: $EVAL(), $INT()

WORKINGDAYS( serial_1, serial_2 ) -- working days between two serialized dates

Working days are Monday through Friday (sorry, Israel!)
Syntax: $WORKINGDAYS( serial_1, serial_2 )
Example: %CALC{"$WORKINGDAYS($TIME(2004/07/15), $TIME(2004/08/03))"}% returns 13
Related: $SUMDAYS(), $TIME(), $TIMEDIFF()

Bug Tracking Example

Bug#:	Priority:	Subject:	Status:	Days to fix
Bug:1231	Low	File Open ...	Open	3
Bug:1232	High	Memory Window ...	Fixed	2
Bug:1233	Medium	Usability issue ...	Assigned	5
Bug:1234	High	No arrange ...	Fixed	1
Total: 4	High: 2 Low: 1 Medium: 1	.	Assigned: 1 Fixed: 2 Open: 1	Total: 11

The last row is defined as:

| Total: %CALC{"$ROW(-2)"}% \ 
  | %CALC{"$COUNTITEMS( R2:C$COLUMN()..R$ROW(-1):C$COLUMN() )"}% | . \ 
  | %CALC{"$COUNTITEMS( R2:C$COLUMN()..R$ROW(-1):C$COLUMN() )"}% \ 
  |  Total: %CALC{"$SUM( R2:C$COLUMN()..R$ROW(-1):C$COLUMN() )"}% |

Above table is created manually. Another Plugin could build the table dynamically, e.g. by pulling data out of a bug tracking system. The Spreadsheet Plugin can be used to display table data statistics.

Plugin Settings

Plugin settings are stored as preferences variables. To reference a plugin setting write %<plugin>_<setting>%, i.e. %SPREADSHEETPLUGIN_SHORTDESCRIPTION%

One line description, is shown in the TextFormattingRules topic:
- Set SHORTDESCRIPTION = Add spreadsheet calculation like "$SUM( $ABOVE() )" to tables located in TWiki topics.

Debug plugin: (See output in data/debug.txt)
- Set DEBUG = 0

Do not handle %CALC{}% tag in included topic while including topic: (default: 1)
- Set SKIPINCLUDE = 1

WikiWords to exclude from being spaced out by the $PROPERSPACE(text) function. This comma delimited list can be overloaded by a DONTSPACE preferences variable:
- Set DONTSPACE = CodeWarrior, MacDonald, McIntosh, RedHat, SuSE

Plugin Installation Instructions

Note: You do not need to install anything on the browser to use this plugin. Below installation instructions are for the administrator who needs to install this plugin on the TWiki server.

Download the ZIP file from the SpreadSheetPlugin home

Unzip SpreadSheetPlugin.zip in your twiki installation directory. Content:

File:	Description:
`data/TWiki/SpreadSheetPlugin.txt`	Plugin topic
`data/TWiki/SpreadSheetPlugin.txt,v`	Plugin topic repository
`lib/TWiki/Plugins/SpreadSheetPlugin.pm`	Plugin Perl module

Test if the "Total" in the first table in this topic is correct.

Plugin Info

Plugin Author:	TWiki:Main/PeterThoeny
Plugin Version:	17 Jul 2004
Change History:
17 Jul 2004:	Added $WORKINGDAYS(), contributed by TWiki:Main/CrawfordCurrie
24 May 2004:	Refactored documentation (no code changes)
03 Apr 2004:	Added $ABS(), $LISTIF(); fixed $VALUE() to remove leading zeros; changed $FIND() and $SEARCH() to return 0 instead of empty string if no match
21 Mar 2004:	Added $LISTITEM(); fixed call to unofficial function
16 Mar 2004:	Added $LISTMAP(), $LISTREVERSE(), $LISTSIZE(), $LISTSORT(), $LISTUNIQUE(), $SETM(); retired $COUNTUNIQUE() in favor of $COUNTITEMS($LISTUNIQUE()); fixed evaluation order issue of $IF(); fixed missing eval error messages suppressed since version 06 Mar 2004; redirect stderr messages to warning
08 Mar 2004:	Added $LIST()
06 Mar 2004:	Added $AND(), $MOD(), $NOT(), $OR(), $PRODUCT(), $PROPER(), $PROPERSPACE(), $RAND(), $REPEAT(), $SIGN(), $VALUE(); added digits parameter to $ROUND(); renamed $MULT() to $PRODUCT(); $MULT() is deprecated and undocumented
27 Feb 2004:	Added $COUNTUNIQUE()
24 Oct 2003:	Added $SET(), $GET(), $MEDIAN(); added $SUMPRODUCT(), inspired by TWiki:Main/RobertWithrow; added $SUMDAYS(), contributed by TWiki:Main/SvenDowideit
21 Oct 2003:	Added support for lists `(1, 2, 3)` and lists of table ranges `(R1:C1..R1:C5, R3:C1..R3:C5)` for all functions that accept a table range; added $TIMEADD(); in $TIMEDIFF() added week unit; in $FORMATTIME() changed $weekday to $wd and added $wday and $weekday
14 Oct 2003:	Added $TIME(), $TODAY(), $FORMATTIME(), $FORMATGMTIME(), $TIMEDIFF()
13 Oct 2003:	Added $MULT(), contributed by TWiki:Main/GerritJanBaarda
30 Jul 2003:	Added $TRANSLATE()
19 Jul 2003:	Added $FIND(), $NOP(), $REPLACE(), $SEARCH(), $SUBSTITUTE(), contributed by TWiki:Main/PaulineCheung
19 Apr 2003:	Added $COUNTSTR(), $EXACT(), $IF(), $ROUND(), $TRIM(); added $FORMAT(), contributed by TWiki:Main/JimStraus; support `%` modulus operator in $EVAL, $INT, and $ROUND; fixed bug in $DEF
07 Jun 2002:	Added $DEF(), contributed by TWiki:Main/MartinFuzzey; allow values with HTML formatting like `<u>102</u>`, suggested by TWiki:Main/GladeDiviney; added SKIPINCLUDE setting
12 Mar 2002:	Support for multiple functions per nesting level
15 Jan 2002:	Added $CHAR(), $CODE() and $LENGTH()
12 Nov 2001:	Added $RIGHT()
12 Aug 2001:	Fixed bug of disappearing multi-column cells
19 Jul 2001:	Fixed incorrect $SUM calculation of cell with value `0`
14 Jul 2001:	Changed to plug & play
01 Jun 2001:	Fixed insecure dependencies for $MIN and $MAX
16 Apr 2001:	Fixed div by 0 bug in $AVERAGE
17 Mar 2001:	Initial version
CPAN Dependencies:	none
TWiki:Plugins/Benchmark:	GoodStyle 99%, FormattedSearch 99%, SpreadSheetPlugin 95%
Other Dependencies:	none
Perl Version:	5.000 and up
Plugin Home:	http://TWiki.org/cgi-bin/view/Plugins/SpreadSheetPlugin
Feedback:	http://TWiki.org/cgi-bin/view/Plugins/SpreadSheetPluginDev

Related Topics: TWikiPreferences, TWikiPlugins

-- TWiki:Main/PeterThoeny - 17 Jul 2004

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