Write key message titles for charts and graphs

The rationale behind inverted pyramid writing holds for graphics as well. Busy web users want to grab key messages from the graphics just as they

You can keep the map show many aspects, such as rivers and roads.

You can keep the map show many aspects, such as rivers and roads.

It was raining in Tasmania and very dry in most of Australia when I captured this map.

¡Jro*4i 0riinf»li (3 Itfiiitniflg a 6C«nutet y mwKxn y.j c,*ii medum v bflhtntrifl detected ever the cast three hours * displayed »nd «6 f»ded from white (most current) to blue (eldest) through red.

Rainfall since Sam tocaJ trme '9 ¿«splayed with coloured dcts.

It was raining in Tasmania and very dry in most of Australia when I captured this map.

¡Jro*4i 0riinf»li (3 Itfiiitniflg a 6C«nutet y mwKxn y.j c,*ii medum v bflhtntrifl detected ever the cast three hours * displayed »nd «6 f»ded from white (most current) to blue (eldest) through red.

Rainfall since Sam tocaJ trme '9 ¿«splayed with coloured dcts.

Figure 11-14 Pictures can send powerful messages. When possible, let your web users decide how much data to combine in one picture. www.weatherzone.com.au

do from the text. But the traditional way of titling charts and graphs just by their subject matter ("gasoline use per month for the last 2 years") forces the web user to work at analyzing the chart and extracting the key message. Instead, you can help people take away the key message of your chart or graph by putting that message in the title ("gasoline prices have been rising steadily over the last 2 years"). The researchers at the U. S. Economic Research Service do a good job of giving illustrations key message titles, as in Figure 11-15.

©The key message title tells you the main point of the chart.

But people still have to extract the second key S^y message: Income level doesn't matter.

✓^S The chart also has clearly ' labeled axes, a color-coded legend, well-grouped data, and a scale that starts at

But people still have to extract the second key S^y message: Income level doesn't matter.

✓^S The chart also has clearly ' labeled axes, a color-coded legend, well-grouped data, and a scale that starts at

Why are the drinks in this f • * \ order from left to right? They are not ordered by quantity. They are not ordered alphabetically. They seem to be in random order.

Figure 11-15 Key message titles on charts and graphs help busy web users. www.ers.usda.gov

Why are the drinks in this f • * \ order from left to right? They are not ordered by quantity. They are not ordered alphabetically. They seem to be in random order.

zero.

Figure 11-15 Key message titles on charts and graphs help busy web users. www.ers.usda.gov

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