Elements part of a row or column container repeater can also be used in Calculation elements. However, they have a different syntax to normal elements and some specific formulas that will apply to them.
For all elements NOT part of a repeater, the user can simply input ':' and a list of their elements will display, as shown below:
Any element part of a repeater will NOT show in this list.
To access the repeater element the user should use '$'. Inputting this will display all elements part of a repeater:
Rules and Calculations of Repeater Elements:
Returning all results from an element in a repeater:
Inputting $element$ will return the total for that element part of the repeater.
Returning a specific result from a repeater:
To return a specific value from a repeater element the User should use this equation:
INDEX($repeaterElement$, index value)
The index value is 1 based, NOT 0 based like normal programming functionality.
Checking if a repeater contains a value:
To check if a repeater element contains a specific value the User can make use of this function:
Use TRUE or FALSE for Boolean.
Use double quotes(““) for any string values.
Numbers should be inputted as is without any quotes
Dates should be inputted as “YYYY-MM-DD“.
Checking how many results were inputted for an element repeater:
To check how many results were inputted for a repeater element the User can make use of the LEN (short for Length) calculation.
This will return the number of inputted values for the element NOT the number of repeats.
How to Run a Calculation for Each Repeater Container:
In many cases, the User may wish to have a Calculation within each container repeater.
For this scenario it is important they follow this syntax:
INDEX($number-1$, @) - The @ will automatically set the current index values of the element in the repeater.
How to Return the Index of the Repeater:
To return the index of the repeater simply add a Calculation Element with '@' as the formula. This will return the current index value.