Tag Archives: padding

Eddie Van Halen and Dashed Lines

Mastery can be magic. I can remember a time as a young person when I just started to have a clue about how music was made hearing an Eddie Van Halen solo on the radio and wondering, “How does one person make that many notes???” Or the scene in The Empire Strikes Back where Yoda lifts the X-Wing out of the bog and Luke is hornswoggled. Amazement, disbelief, and “I want to do that too!” all rolled into one feeling, when the heretofore impossible becomes, for an instant, possible.

One of the things Tableau doesn’t do is let you draw line charts with dashed lines, to create a view like this that could be from Excel or another application:

Solid and Dashed

Except that Tableau can do this, and you’re about to learn how – actually, three entirely different techniques. Along the way you’ll learn some more about how Tableau draws Line Marks and table calculation domain padding.

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Blending Secondary Data into Primary Without Linking Data In Primary

Tableau is a Swiss army knife for data visualization, with a bunch of component tools – the view types, calculated fields, table calculations, custom SQL, mapping, performance optimization, etc. As I’ve been learning Tableau I’ve been mastering new bits. Lately I’ve been exploring Tableau’s Show Missing Values feature, otherwise known as “date padding” or sometimes “domain padding”, and made an interesting discovery. Continue reading