To allow Power BI visuals to change according to the measures or dimensions selected by users, some techniques can help provide a custom-built experience.
Use Dynamic Measure Selection with Switch Statements: First, create a new measure that incorporates the SWITCH function (DAX). The advantage of this technique is that end-users can select from a list of measures that could be configured as a slicer on the report. For example, a user can encounter a slicer with values such as “Sales” or “Profit,” whereby one can implement the SWITCH function to change the measure that is displayed based on the user's selection. An easy one-aspect example in DAX:
SelectedMeasure =
SWITCH(
TRUE(),
'MeasureSelection'[SelectedOption] = "Sales",
[Sales], 'MeasureSelection'[SelectedOption] = "Profit", [Profit],
BLANK()
)
This will modify the displayed metric based on the selected option, avoiding the use of multiple visuals.
Establish Guidelines for Dynamic Colour Changes: Similarly, conditional formatting is able to enhance visual adjustments based on user interactions. In Power BI, colors, backgrounds, and data bars can be formatted conditionally based on rules or fields. Similarly, you can also apply DAX measures that will return a certain color depending on output evaluation conditions, such as thresholds selected by the user. For instance, generate a measure that will give out colour-coded hex depending on how the performance measures:
ColorMeasure =
IF([Performance] > 80, "#4CAF50", IF([Performance] > 50, "#FFC107", "#F44336"))
Next, use this measure on the background or font color in the formatting pane of your visuals for an impressive effect.
Utilize Field Parameters for Switching Dimensions: In Power BI, field parameters are offered to users so that they can easily switch dimensions on different visuals without the trouble of creating other visuals with respect to various sizes. To do this, click on the Modeling tab and generate a field parameter with the dimensions you expect your audience to be able to switch. This is especially important when you want the audience to switch views in the same visual, say by Region, Product, or Time Period.
Using these techniques—dynamic measure selection, conditional formatting, and field parameters—allows one to build interactive, flexible visuals that improve user participation and enhance one’s experience with Power BI.
