Hide Card Values until that Value Type is selected on the Chart?

[Boveitj]

Example: I have a chart that tracks operators performance with most of the charts having operators name on the x-axis and a performance metric on the y-axis. When the dashboard is loaded, a random name populates the card visual which I would like to show as just a blank card until an operator is selected. I use this card so operators names can be read since often times they are small or cut off on the chart. 

[KHorseman · Accepted solution]

Write a measure and use that on the card.

Selected Operator = IF(
	HASONEVALUE(TableName[OperatorName]),
	FIRSTNONBLANK(TableName[OperatorName], 1),
	" "
)

[Boveitj]

Amazing, Thank you so much!