Some visual types (bars, lines, areas, and grouped bars) may be trellised on measures,
simply by adding more fields to the measurement shelf.
Here, we can change the chart developed in Bars (Country vs.
Life Expectancy) into a visual trellised on three measures: Life
Expectancy, Population, and GDP per Capita. We
accomplish this by placing all three measurements on the Y Axis
shelf.
Click the Y Axis shelf. Life Expectancy is
already on the shelf.
With the shelf active, click the population field in the
Data menu.
Click the gdp_per_capita field in the Data
menu.
Click Refresh Visual.
This setup produces a measurement-trellised bar chart visual.
To compare this approach with plotting two measures onto the same line chart, see
Creating line visuals with dual axes.