GGM return the Geometric Average of all of the values in the date range specified by the GroupOffset and Grouping for the variable.

SYNTAX:

GGM(VarNum,GroupOffset/StartDate,Grouping/EndDate, GType) 

VarNum:  The variable number to get the total for.

GroupOffset/StartDate: Used with the Grouping parameter to set the dates to calculate the stat for.  Sets the number of Groups (set by the Grouping Parameter) to be added to set the dates.  See examples below. If this field is a date string (i.e. "07/16/2004") or refers to a cell with a date in it, it is assumed to be the start date to calculate the stat for.

Grouping/EndDate: Used to set which dates to calculate the stat for.  If the Grouping is a date literal string (i.e. "07/16/2004") or refers to a cell with a date in it, it is assumed to be the end date to calculate the stat for. Common Groupings are:

"D" Days
“M” Monthly 
"R" Report Dates
Click here for available Grouping options

GType: Sets how zero's are handled in the calculation.

0 - Ignore zeros
1 - Convert 0 to 1
2 - Add one to all
 

Type	Values	Values Used	Result
0	200,0,52,74	200,52,74	91.6
1	200,0,52,74	200,1,52,74	29.6
2	200,0,52,74	201,1,53,75	28.9 (29.9-1)

 

NOTES:

In Design, Spread Reports use Locate, Group Summary to place this formula on a report.

EXAMPLES: