Excel won't display hidden data in a chart unless you flip the switch. Learn which option controls this behavior. By default, Excel displays only visible data in a chart. Consequently, if you hide ...

One of the advantages of using Excel as your spreadsheet application is that you can display a simple piece of information just as effectively as a complicated collection of data. For instance, you ...

Statistician Howard Wainer and psychologist Michael Friendly are numbers magicians — they make the invisible visible. Two of the world’s leading figures in the field of data visualization, they are co ...

For the past few years, I've been trying to understand how to make graphs using RRDtool (Round-Robin Database tool) after failing miserably to understand MRTG (Multi-Router Traffic Grapher) before ...