Step1: Create Parameter (2 times):
1st: Moving Average Period with Data type: String, List, day, month, year
2nd: Moving Average Duration, Integer data type, current value: 10
Step2: Create Calculated Field:
Moving Average Period (Name), function: Datetrunc([Moving Average Period], [Time])
Change the datatype to date -> Then drag it to the "columns"
drag the "count" to "rows"
Create a 'Set' for "Moving Average Period", then it pops up a list of date and click ok
Create calculated field -> name: min month, function: {Min(If [Moving Average Period Set] Then [Moving Average Period] End)}
then duplicate the calculated field and amend min to max and change the function name accordingly
drag min and max month to detail (continuous)
Step3: Show Set for "Moving Average Period Set" ( Then the date inside the dataset will be shown)
Step4: On top of the app menu, click "Worksheet" -> "Actions" -> "Add Actions" -> " Change Set Values"
A new window pops up, rename it with " Update Moving Average Period Set" -> Under Target Set click Moving Ave Period Set.
At Clearing the selection will -> Keep set values
\ DONE
(a function to let user to create interactive relationships between data, dashboard
Step5: Building bands when select points on dashboard
Click Analytics -> "Reference Band " (Under Custom) ->Drag it tp Moving Average Period -> New Window pops up -> band from: "min" to "max", "none" for label and tooltip
Step 6: Changing the color of the selected data point/range
Create calculated field -> Name: In Range, Function: [Moving Average Period]>= [Min Month]
AND
[Moving Average Period]<= [Max Month (copy)]
Then drag it to "colour" marks