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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:

Interactive example:
 
The formula next to "Total" is

The action of this Plugin is triggered by the %CALC{"..."}%
variable, which gets rendered according to the builtin function(s) found between the quotes.
$FUNCNAME(parameter)
%CALC{"$SUM( R2:C$COLUMN(0)..R$ROW(1):C$COLUMN(0) )"}%
%CALC{"$SUM( 3, 5, 7 )"}%
R1:C1
. Table address matrix:
R1:C1  R1:C2  R1:C3  R1:C4 
R2:C1  R2:C2  R2:C3  R2:C4 
".."
, e.g. "row 1 through 20, column 3" is: R1:C3..R20:C3
%CALC{"$SUM( 3, 5, $T(R1:C7), R1:C11..R1:C15 )"}%
Function  Description 

"$ABOVE()"  The address range of cells above the current cell 
"$ABS(num)"  The absolute value of a number. Example: %CALC{"$ABS(12.5)"}% returns 12.5 
"$AND(list)"  The logcial AND of a list. Example: %CALC{"$AND(1, 0, 1)"}% returns 0 
"$AVERAGE(list)"  The average of a list or a range of cells. Example: To get the average of column 5 excluding the title row, write in the last row: %CALC{"$AVERAGE( R2:C5..R$ROW(1):C5 )"}% 
"$CHAR(number)"  The ASCII character represented by number. Example: %CALC{"$CHAR(97)"}% returns a 
"$CODE(text)"  The ASCII numeric value of the first character in text. Example: %CALC{"$CODE(abc)"}% returns 97 
"$COLUMN(offset)"  The current column number with an optional offset 
"$COUNTITEMS(list)"  Counts individual items in a list. Example: %CALC{"$COUNTITEMS( $ABOVE() )"}% returns Closed: 1, Open: 2 assuming one cell above the current cell contains Closed and two cells contain Open 
"$COUNTSTR(list, str)"  Counts 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. Example: To count the number of non empty cells above the current cell, write %CALC{"$COUNTSTR( $ABOVE() )"}% ; to count the number of cells equal to DONE , write %CALC{"$COUNTSTR( $ABOVE(), DONE )"}% ; 
"$DEF(list)"  Returns the first list item or cell reference that is not empty. Example: %CALC{"$DEF( R1:C1..R1:C3 )"}% 
"$EVAL(formula)"  Evaluates a simple formula. Only addition, substraction, multiplication, division and modulus of numbers are supported. Any nesting is permitted. Example: %CALC{"$EVAL( (5 * 3) / 2 + 1.1 )"}% returns 8.6 
"$EXACT(text1, text2)"  Compares two text strings and returns 1 if they are exactly the same, or 0 if not. Example: %CALC{"$EXACT( foo, Foo )"}% returns 0 ; %CALC{"$EXACT( foo, $LOWER(Foo) )"}% returns 1 
"$FIND(search_string, text, start_index)"  Finds one text string search_string , within another text string text , and returns the number of the starting position of search_string , from the first character of text . This search is case sensitive and is not a regular expression search; use $SEARCH() for regular expression searching. Starting position is 1; a 0 is returned if nothing is matched. Examples: %CALC{"$FIND(f, fluffy)"}% returns 1 %CALC{"$FIND(f, fluffy, 2)"}% returns 4 %CALC{"$FIND(@, fluffy, 1)"}% returns 0 
"$FORMAT(type, prec, number)"  Formats a number to a certain type and precision. Types with examples:  %CALC{"$FORMAT( COMMA, 2, 12345.6789 )"}% returns 12,345.68  %CALC{"$FORMAT( DOLLAR, 2, 12345.67 )"}% returns $12,345.68  %CALC{"$FORMAT( NUMBER, 1, 12345.67 )"}% returns 12345.7  %CALC{"$FORMAT( PERCENT, 1, 0.1234567 )"}% returns 12.3% 
"$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. See also $TIME() , $TODAY() , $FORMATGMTIME() , $TIMEDIFF() . Example: %CALC{"$FORMATTIME(0, $year/$month/$day GMT)"}% returns 1970/01/01 GMT 
"$FORMATGMTIME(serial, text)"  Convert a serialized date into a date string in Greenwich time zone. Same variables expansion as in $FORMATTIME() . Example: %CALC{"$FORMATGMTIME(1041379200, $day $mon $year)"}% returns 01 Jan 2003 
"$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. See also $SET() . Example: %CALC{"$GET(my_total)"}% returns the value of the my_total variable 
"$IF(condition, value if true, value if 0)"  Returns one value if a condition is met, and another value if not. The condition can be a number (where 0 means condition not met), or two numbers with a comparison operator < (less than), <= (less than or equal), == (equal), != (not equal), >= (greater than or equal), > (greater than). Examples:%CALC{"$IF( $T(R1:C5) > 1000, Over Budget, OK)"}% returns Over Budget if value in R1:C5 is over 1000, OK if not%CALC{"$IF( $EXACT($T(R1:C2),), empty, $T(R1:C2))"}% returns the content of R1:C2 or empty if empty%CALC{"$SET(val, $IF( $T(R1:C2) == 0, zero, $T(R1:C2)))"}% sets a variable conditionally 
"$INT(formula)"  Evaluates a simple formula and rounds the result down to the nearest integer. Example: %CALC{"$INT(10 / 4)"}% returns 2 
"$LEFT()"  The address range of cells to the left of the current cell 
"$LENGTH(text)"  The length in bytes of text. Example: %CALC{"$LENGTH(abcd)"}% returns 4 
"$LIST(range)"  Converts the content of a range of cells into a flat list, delimited by comma. Cells containing commas are merged into the list. Example: %CALC{"$LIST( $LEFT() )"}% returns Apples, Lemons, Oranges, Kiwis assuming the cells to the left contain  Apples  Lemons, Oranges  Kiwis  
"$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 $index for the list index, starting at 1. Examples: %CALC{"$LISTIF($item > 12, 14, 7, 25)"}% returns 14, 25 %CALC{"$LISTIF($NOT($EXACT($item,)), A, B, , E)"}% returns nonempty elements A, B, E %CALC{"$LISTIF($index > 2, A, B, C, D)"}% returns C, D 
"$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. Examples:%CALC{"$LISTITEM(2, Apple, Orange, Apple, Kiwi)"}% returns Orange %CALC{"$LISTITEM(1, Apple, Orange, Apple, Kiwi)"}% returns Kiwi 
"$LISTMAP(formula, list)"  Evaluate and update each element of a list. In the formula you can use $item to indicate the element; $index to show the index of the list, starting at 1. Example: %CALC{"$LISTMAP($index: $EVAL(2 * $item), 3, 5, 7, 11)"}% returns 1: 6, 2: 10, 3: 14, 4: 22 
"$LISTREVERSE(list)"  The opposite order of a list. Example: %CALC{"$LISTREVERSE(Apple, Orange, Apple, Kiwi)"}% returns Kiwi, Apple, Orange, Apple 
"$LISTSIZE(list)"  The number of elements in a list. Example: %CALC{"$LISTSIZE(Apple, Orange, Apple, Kiwi)"}% returns 4 
"$LISTSORT(list)"  Sorts a list in ASCII order, or numerically if all elements are numeric. Example: %CALC{"$LISTSORT(Apple, Orange, Apple, Kiwi)"}% returns Apple, Apple, Kiwi, Orange 
"$LISTUNIQUE(list)"  Removes all duplicates from a list. Example: %CALC{"$LISTUNIQUE(Apple, Orange, Apple, Kiwi)"}% returns Apple, Orange, Kiwi 
"$LOWER(text)"  The lower case string of a text. Example: %CALC{"$LOWER( $T(R1:C5) )"}% returns the lower case string of the text in cell R1:C5 
"$MAX(list)"  The biggest value of a list or range of cells. Example: To find the biggest number to the left of the current cell, write: %CALC{"$MAX( $LEFT() )"}% 
"$MEDIAN(list)"  The median of a list or range of cells. Example: %CALC{"$MEDIAN(3, 9, 4, 5)"}% returns 4.5 
"$MIN(list)"  The smallest value of a list or range of cells. Example: %CALC{"$MIN(15, 3, 28)"}% returns 3 
"$MOD(num, divisor)"  The reminder after dividing num by divisor . Example: %CALC{"$MOD(7, 3)"}% returns 1 
"$NOP(text)"  A nooperation. Allows one to defy the order of Plugin execution. For example, it will allow preprossing to be done before %SEARCH{}% is evaluated. Use $per to escape '%'. 
"$NOT(num)"  The reverse logic of a number. Returns 0 if num is not zero, 1 if zero. Example: %CALC{"$NOT(0)"}% returns 1 
"$OR(list)"  The logcial OR of a list. Example: %CALC{"$OR(1, 0, 1)"}% returns 1 
"$PRODUCT(list)"  The product of a list or range of cells. Example: to calculate the product of the cells to the left of the current one use %CALC{"$PRODUCT($LEFT())"}% 
"$PROPER(text)"  Capitalizes letters in text that follow any character other than a letter. Converts all other letters to lowercase letters. Examples:%CALC{"PROPER(a small STEP)"}% returns A Small Step %CALC{"PROPER(f1 (formula1))"}% returns F1 (Formula 1) 
"$PROPERSPACE(text)"  Properly spaces out WikiWords preceeded by white space, parenthesis, or ][ . Words listed in the DONTSPACE TWikiPreferences variable or DONTSPACE Plugins setting are excluded. Example, assuming DONTSPACE contains McIntosh: %CALC{"PROPERSPACE(Old MacDonald had a ServerFarm, EeEyeEeEyeOh"}% returns Old MacDonald had a Server Farm, Ee Eye Ee Eye Oh 
"$RAND(max)"  Random number, evenly distributed between 0 and max , or 0 and 1 if max is not specified. 
"$REPEAT(text)"  Repeat text a number of times. Example: %CALC{"$REPEAT(/\, 5)"}% returns /\/\/\/\/\ 
"$REPLACE(text, start_num, num_chars, new_text)"  Replaces part of text string text , based on the starting position start_num , and the number of characters to replace num_chars . The characters are replaced with new_text . Starting position is 1; use a negative start_num to count from the end of the text. See also $SUBSTITUTE() , $TRANSLATE() . Example: %CALC{"$REPLACE(abcdefghijk,6,5,*)"}% returns abcde*k 
"$RIGHT()"  The address range of cells to the right of the current cell 
"$ROUND(formula, digits)"  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. Examples: %CALC{"$ROUND(3.15, 1)"}% returns 3.2 %CALC{"$ROUND(3.149, 1)"}% returns 3.1 %CALC{"$ROUND(2.475, 2)"}% returns 2.48 %CALC{"$ROUND(34.9, 1)"}% returns 30 
"$ROW(offset)"  The current row number with an offset. Example: To get the number of rows excluding table heading ( first row) and summary row (last row you are in), write: %CALC{"$ROW(2)"}% 
"$SEARCH(search_string, text, start_index)"  Finds one text string search_string , within another text string text , and returns the number of the starting position of search_string , from the first character of text . This search a RegularExpression search; use $FIND() for nonregular expression searching. Starting position is 1; a 0 is returned if nothing is matched. Examples: %CALC{"$SEARCH([uy], fluffy)"}% returns 3 %CALC{"$SEARCH([uy], fluffy, 3)"}% returns 6 %CALC{"$SEARCH([abc], fluffy,)"}% returns 0 
"$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. See also $GET() . Example: %CALC{"$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 
"$SETM(name, formula)"  Updates 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 $GET() to retrieve variables. Example: %CALC{"$SETM( total, + $SUM($LEFT()) )"}% adds the sum of all table cells on the left to the total variable, and returns an empty string 
"$SIGN(num)"  The sign of a number. Returns 1 if num is negative, 0 if zero, or 1 if positive. Example: %CALC{"$SIGN(12.5)"}% returns 1 
"$SUBSTITUTE(text, old, new, instance, option)"  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 . See also $REPLACE() , $TRANSLATE() . Examples: %CALC{"$SUBSTITUTE(Good morning, morning, day)"}% returns Good day %CALC{"$SUBSTITUTE(Q22002,2,3)"}% returns Q33003 %CALC{"$SUBSTITUTE(Q22002,2,3,3)"}% returns Q22003 %CALC{"$SUBSTITUTE(abc123def,[09],9,,r)"}% returns abc999def 
"$SUM(list)"  The sum of a list or range of cells. 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( $ABOVE() )"}% 
"$SUMDAYS(list)"  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. Example: %CALC{"$SUMDAYS( 2w, 1, 2d, 4h )"}% returns 13.5 , the evaluation of (2*5 + 1 + 2 + 4/8) 
"$SUMPRODUCT(list, list, ...)"  The scalar product on ranges of cells. Example: %CALC{"$SUM( R2:C1..R4:C1, R2:C5..R4:C5 )"}% evaluates and returns ($T(R2:C1) * $T(R2:C5) + $T(R3:C1) * $T(R3:C5) + $T(R4:C1) * $T(R4:C5)) 
"$T(address)"  The content of a cell. Example: %CALC{"$T(R1:C5)"}% returns the text in cell R1:C5 
"$TRANSLATE(text, from, to)"  Translate text from a set of characters to another set, one character by one. The text may contain commas; the last two comma separated parameters are required. For from and to parameters, you can write $comma to escape comma, $sp to escape space. See also $REPLACE() , $SUBSTITUTE() . Examples: %CALC{"$TRANSLATE(boom,bm,cl)"}% returns cool %CALC{"$TRANSLATE(one, two,$comma,;)"}% returns one; two 
"$TIME(text)"  Converts a date string into a serialized date number (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 ; 31Dec2009 ; 31/Dec/2009 ; 2009/12/31 ; 20091231 ; 2009/12/31 ; 2009/12/31 23:59 ; 2009/12/31  23:59 ; 200912312359 ; 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. See also $TODAY() , $FORMATTIME() , $FORMATGMTIME() , $TIMEDIFF() . Example: %CALC{"$TIME( 2003/10/14 GMT )"}% returns 1066089600 
"$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. See also $TIME() , $TIMEDIFF() , $TODAY() , $FORMATTIME() . Example: %CALC{"$TIMEADD( $TIME(), 2, week )"}% returns the serialized date two weeks from now 
"$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. See also $TIME() , $TIMEADD() , $TODAY() , $FORMATTIME() . Example: %CALC{"$TIMEDIFF( $TIME(), $EVAL($TIME()+90), minute )"}% returns 1.5 
"$TODAY()"  Get the serialized date of today at midnight GMT. The related $TIME() returns the serialized date of today at the current time, e.g. it includes the number of seconds since midnight GMT. See also $FORMATTIME() , $FORMATGMTIME() , $TIMEDIFF() . Example: %CALC{"$TODAY()"}% returns the number of seconds since Epoch 
"$TRIM(text)"  Removes all spaces from text except for single spaces between words. Example: %CALC{"$TRIM( eat spaces )"}% returns eat spaces . 
"$UPPER(text)"  The upper case string of a text. Example: %CALC{"$UPPER( $T(R1:C5) )"}% returns the upper case string of the text in cell R1:C5 
"$VALUE(text)"  Extracts a number from text . Returns 0 if not found. Examples:%CALC{"$VALUE(US$1,200)"}% returns 1200 %CALC{"$VALUE(PrjNotebook1234)"}% returns 1234 %CALC{"$VALUE(Total: 12.5)"}% returns 12.5 
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$COLUMN() )"}% 
Above table is created manually. Another Plugin could build the table dynamically, e.g. by pulling data out of a bug tracking system. The Spreadsheet Plugin can be used to display table data statistics.
Plugin settings are stored as preferences variables. To reference
a plugin setting write %<plugin>_<setting>%
, i.e. %SPREADSHEETPLUGIN_SHORTDESCRIPTION%
"$SUM( $ABOVE() )"
to tables located in TWiki topics.
data/debug.txt
)
%CALC{}%
tag in included topic while including topic: (default: 1)
$PROPERSPACE(text)
function. This comma delimited list can be overloaded by a DONTSPACE preferences variable:
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.
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 
Plugin Author:  TWiki:Main/PeterThoeny 
Plugin Version:  03 Apr 2004 
Change History:  
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 multicolumn 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/cgibin/view/Plugins/SpreadSheetPlugin 
Feedback:  http://TWiki.org/cgibin/view/Plugins/SpreadSheetPluginDev 
Related Topics: TWikiPreferences, TWikiPlugins
 TWiki:Main/PeterThoeny  03 Apr 2004