Gantt-Chart offers you additional information for steering your tasks based on earned value analysis since Gantt-Chart version 3.2.

Please open the Gantt menu (cog icon) on the right top, choose menu item "configure columns & rows" and switch to tab "columns". Select the preferred column you want to add and click on button "add". The new column will be appended within the preview. If the preview exceeds your screen width, you can scroll left/right. Clicking on arrow icons per column name, you can re-order the columns or remove them via click on the trash icon.

Please click on button "finish" to store your choice and switch back to the Gantt diagram.

Schedule Variance

The planned duration will be determined as amount of working days between planned start date and planned end date taking the assignee's calender into account as well as weekends, company holidays etc. The baseline duration will be calculated accordingly using baseline start date and baseline end date. The acutal duration will be calculated as sum of estimated remaining effort and the amount of working days between actual start date and actual end date. If an issue has not been finished, the actual end date has not been set and is unavailable. In that case, the current date (today) will be used instead.

System Admin TODO

To set the content of custom field "actual end" to current date, it is necessary to configure your JIRA's workflow to send an event "ISSUE_RESOLVED".

Schedule Variance based on actual planning (SVa)

SVa = (actual duration - planned duration) / planned duration * 100

Schedule Variance based on baseline (SVb)

SVb = (actual duration - baseline duration) / baseline duration * 100

Meanings:

If the Schedule Variance is a positive percent value, you are ahead of schedule.
If the Schedule Variance is a negative percent value, you are behind schedule.
When the project is completed, Schedule Variance becomes zero because at the end of the project, all the Planned Values have been earned.

Schedule Performance Index (SPI)

The earned value (EV) will be calculated as time spent / (time spent + remaining estimated effort). If (time spent + remaining estimated effort) is zero, the original estimated effort will be used instead to avoid division by zero. The planned value (PV) will be calculated as amount of working days between planned start date of an issue and minimum(planned end date, today) divided by duration in working days.

SPI = EV / PV

Meaning:

If the SPI is greater than 100%, this means more work has been completed than the planned work. In other words, you are ahead of schedule.
If the SPI is less than 100%, this means less work is completed than the planned work. In other words, you are behind schedule.
If the SPI is equal to 100%, this means all work is completed.

Cost Performance Index (CPI)

Prerequisite for calculation of CPI is the creation of an additional custom field e.g. named "progress" of JIRA standard field type "number". This custom field has to be mapped within the add-on configuration by the JIRA system administrator. Therefore, you can name it as you want within your preferred language.

That actually archieved progress as percentage has to be maintained by the user(s) frequently. This custom field will be used to represent the actual costs (AC), whereas the earned value (EV) will be calculated as time spent / (time spent + remaining estimated effort). If (time spent + remaining estimated effort) is zero, the original estimated effort will be used instead to avoid division by zero.

CPI = EV / AC

Meaning:

If the CPI is less than 100%, you are earning less than the spending. In other words, you’re over budget.
If the CPI is greater than 100%, you are earning more than the spending. In other words, you are under budget.
If the CPI is equal to 100%, this means earning and spending are equal. Or you can say that you are proceeding exactly as per the planned budget spending, although this rarely happens.

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