Latest posts

 

“Torn paper” look for non-zero axis; Issue #436 April 2 2019

In my Twitter feed I saw a number of well respected data visualization experts liking a recent article by RJ Andrews for the Data Visualization Society. In it he talks about the issue of starting the axis of a graph at a value other than zero. This is a common topic...

Showing future differences; Issue #433 February 19 2019

Showing future differences; Issue #433 February 19 2019

When we want to show the impact of a proposed change, one of the ways we can do it is to show a line graph of the current state and the proposed state with a shaded area between the two to emphasize the difference. This is much better than the default table of values...

Comparing only one value to a standard; Issue #432 February 5 2019

Comparing only one value to a standard; Issue #432 February 5 2019

When you want to compare values to a standard, such as comparing output in various production plants to the goal, a dashed line on a column graph is a good visual to use. The dashed line runs across the graph and it is easy to see if each column is above or below the...

Showing difference with diverging bars; Issue #431 January 22 2019

To see how well we are doing in the current year, we compare this year’s results to last year’s results and to the budget we set at the start of the year. Too often presenters show a spreadsheet of the numbers and expect the audience to figure out the result. My...

Making presentations more accessible; Issue #429 December 11 2018

Last week I was working with an organization who has a library of graphics that they encourage their staff to use. This gives a consistency to the look of their presentations. Each graphic represents a specific role, service, or element of their business. When I was...

Bar charts with long category labels; Issue #428 November 27 2018

How do we create graphs with category labels that contain a lot of text? If you are comparing values to each other, a column graph can get tricky since Excel and PowerPoint will turn the text at an angle and cut off labels that are really long. This makes it very hard...