Using fill opacity and stroke opacity properties

Contents[Hide]

1. Overview

This article shows you how to use the Fill Opacity and Stroke Opacity properties to more easily customize the transparency of a chart series. These options are useful for setting up semi-transparent data points for bubble, scatter plot, area, and range charts.

2. Fill Opacity

Consider the following scatter plot chart.

Scatter plot chart
Scatter plot chart

This chart has overlapping data points but it is impossible to tell with the current settings.

To identify the overlapping points, go to Properties for the chart series. Click Look.

Then set the Fill Opacity property to 50%. This will make the data points semi-transparent and appear lighter. The data points that are overlapping are the ones that appear darker than the rest.

Overlapping data points appear darker
Overlapping data points appear darker

3. Stroke Opacity

Consider the following area chart. To make the series in front semi-transparent go to Properties for that series and click Look.

Then set the Fill Opacity and Stroke Opacity to 25%. The Stroke Opacity determines the opacity of the outline of the data points (areas).

Area chart with two series
Area chart with two series

4. See also

Dundas Data Visualization, Inc.
500-250 Ferrand Drive
Toronto, ON, Canada
M3C 3G8

North America: 1.800.463.1492
International: 1.416.467.5100

Dundas Support Hours: 7am-6pm, ET, Mon-Fri