Double Take on Dual Axis Graphs: Part III

This quick follow-up on dual axis graphs shows another take on their potential use.  The first suggestion comes from Naomi Robbins in her book “Creating More Effective Graphs.” 1 She suggests that dual axis graphs may be useful to represent data in different – but equivalent – measurement units such as Centigrade (Celsius) and Fahrenheit.  […]

Dual Axis Graphs: Are They Useful?

I have to admit that even after reading Stephen Few’s article on dual axis graphs, I am not quite ready to rule them out entirely.  As is so often the case with data visualization, what we use depends on what we’re trying to do.  I agree with Joe Mako and Stephen Few that, when used […]

Mixed Metaphor: Line Graph + Bar Chart

Many charting tools allow us to combine bar charts and line graphs in the same graphic – but should we?  This question came up when I did a double take the other day while reading a market research report.  In order to focus on function rather than content, I have re-created a similar graph below: