Call out positions of selected data points in your Tableau view using Drop Lines
I am barely using gridlines on my charts. In fact I didn’t even know that Tableau Software has an option to show and format gridlines. Hence I started the original introduction to this post as follows:
Unlike Microsoft Excel, Tableau Software does not provide an option to display gridlines on charts. Tableau allows you to define so called row and column dividers, but only for categorical data, i.e. dimensions.
This statement is totally wrong: Tableau offers gridlines (Format | Lines | Grid Lines) and Rich was kind enough to correct this in the first comment to this post. Thanks Rich. My fault. I apologize for the confusion.
But still: gridlines are very often nothing else than chart junk as Stephen Few points out in this excellent article: Grid Lines in Graphs are Rarely Useful. Tableau has something way more useful than gridlines: the interactive Drop Line.
Today’s short Tableau Quick Tip #4 introduces this extremely helpful interactive feature of Tableau.