Ability to change the categories of measures

This general-sounding change is actually quite niche when you look into it.  It seems to have been included almost entirely to allow for the inclusion of dynamic URLs in matrices, so I'll give an example of this.

So suppose you've published a report containing this chart:

You want to make the chart show data just for a particular region's towns and a particular environment's habitats.

Getting the Report URL

After publishing, the unique URL of a report will be of this format:

where XXX is some long series of identifying numbers and letters unique to your user acccount.  To this you want to add the region id and environment id in a parameter string - the syntax is this:

Notice the very picky syntax!  If you can read it, admittedly ...

Creating a measure to get the URL

So what I've done now is to create a measure which builds up this URL:

Not for the faint-hearted!

Note that I've used the VALUES function to pick out the only environment id and only region id, so I must hide the matrix grand total (since these will refer to data from more than one environment and more than one region).

I now need to tell Power BI that this measure is a URL:

Select the measure, and choose to make it into a web URL.  This is the change introduced in this Power BI update!

Creating the matrix

I can now create a matrix displaying this measure:

I've chosen to display the URL as an icon, otherwise the text would be way too long!

The final system

I can now click on one of the icons to see data for just that region and environment:

Sales for the environment and region chosen.