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Create a new Power BI Desktop file, and load the Excel workbook from the folder above. Use this to create a table showing the number of offences for each offence subgroup:
The first few rows of the table.
We want to be able to filter this to show only those offences for a particular group:
The offence groups. It would be nice to be able to type one of these into a parameter box, and see the table change!
In Query Editor, create a new parameter called OffenceGroup, and set its default value to Robbery (if for no other reason than that it's the shortest offence group name to type in!):
Your parameter should look something like this.
Still in Query Editor, filter the table of offences to show only those ones for the offence group specified by your parameter:
After returning to your report, you should now see your table is much shorter!
We could do with a title for our report. Go back to Query Editor, and tell Power BI Desktop that you want to load your parameter into your data model:
In Query Editor, choose to enable loading for your parameter.
Set the title of the visual to be an expression:
Click here to set the title to be the value of a field, then choose to show the first value of your parameter (it is of course also the only value of it!).
Your table should now display the offence group name as a title:
The title shows the offence group name.
Without leaving Power BI, use this option to change the offence group to Drug offences:
You can change the value of a parameter using this option.
Refresh your data, and check that your table updates:
The corresponding data for drug offences.
Save this as Was it worth it, then close down the Power BI instance you're using.
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