Evaluating Mathematical Expressions with the Number-data and Eval-data Macros

This page provides the information on the eval-data macro from the Atlassian site.

The eval-data macro allows evaluation of mathematical expressions using data in number-data macros.

Basic Mathematics

The following calculates the value of a fraction, initially 1/2.

Numerator: {number-data:Numerator|decimal=true}1{number-data}
Denominator: {number-data:Denominator|decimal=true}2{number-data}

Result: {eval-data:Result|format=#0.0}${Numerator}/${Denominator}{eval-data}
Percentage: {eval-data:Percentage|format=##0\%}round(${Result} * 100, 0){eval-data}

Observation: The Basic Mathematics example, with the formatting by the java.text.DecimalFormat rules shown in the example from Atlassian, yields the result 5000%. To obtain 50 it was necessary to remove

\%

which is the correct percentage markup and shows the percent sign.

Numerator:
Denominator:

Result:

Evaluating Data in Tables

In the Editview, the text-data and number-data macros present a plus sign with the table. Clicking the plus sign opens the table to accept names of variables and values for them. The eval-data macros calculate the sum and the average.

An example follows.

{table-data:Values}
|| Name || Value ||
| {text-data:Name}{text-data} | {number-data:Value}{number-data} |
{table-data}

Sum: {eval-data:Sum}sumtable("Values", "Value"){eval-data}
Average: {eval-data:Average}avgtable("Values", "Value"){eval-data}

Sum: 0
Average: 0