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Helper I

## Calculating Summation of a Column over a Period of Time

Hello everyone.

I have a "Resource Assignment" table. This table is based on the resources and tasks. So for each resource and task, we have a unique row. Here is a picture:

Each project has some tasks and for each task we have some resources allocated to that task.

Now in this table I have a DAX calculated column, that computes the average daily work for each resource and for each task.

For example, if the effort for completing a task is 20 hours and we have 4 days to complete it, then the average hourly work is 5 hours per day.
This is the code:

``````Average Hours per Task =
DIVIDE(
'Resource Assignment'[Effort],
DATEDIFF('Resource Assignment'[Start], 'Resource Assignment'[Finish], DAY),
0
)``````

Now I want a table like this:

But instead of availability, I want to calculate sum of average hours per day.

This is the logic: imagine for the same period of 4 days, there is another task allocated to the same resource with effort of 20 hours. It means the average of 5 hours a day. Now in total for the 4 days, the resource has to work 10 hours per day to finish both tasks, but the maximum hours that a resource can work on a day is 8 hours a day. so this way the customer can see they are allocating this resource more than the max hours per day and they can know they are doing something wrong.

I want the customer to filter based on dates, so they would for example use a slicer and then this table would shrink to those dates and then I check in the Resource Assignment table, see if the finish and start dates of resources fit in the slicer dates and filter based on the resources and sum over all the averages to get a total average for each resource based on different tasks they are involved with.

Sorry it was long.

I'm fairly new to DAX an I don't exactly know how to implement this.

Super User

Please provide sample data (with sensitive information removed) that covers your issue or question completely, in a usable format (not as a screenshot). Leave out anything not related to the issue.
https://community.fabric.microsoft.com/t5/Community-Blog/How-to-provide-sample-data-in-the-Power-BI-...
Please show the expected outcome based on the sample data you provided.

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