While you are twiddling your trackball thumbs waiting for the DACA explosion. something slightly useful.
I finally bought Edward Tufte’s classic of graphical design The Visual Display of Quantitative Information. It’s so good it has no competitors, like the Department of Water Engineering at the Technical University of Delft. Struggling to find a niggle against a nearly perfect work, my only complaint is that he compares his masterpiece to Strunk and White’s error-packed The Elements of Style: a “malign little compendium of bad advice” (Stephen Dodson); “the book’s toxic mix of purism, atavism, and personal eccentricity is not underpinned by a proper grounding in English grammar” (Geoffrey Pullum). If you have any serious professional or even amateur interest in charts, buy Tufte’s book: he gets all your money as self-publisher, as commercial publishing houses refused to cede him the full graphical control he demanded. More fools they.
The book lucidly combines general graphical principles on “the revelation of the complex” and a plethora of striking and even amazing examples of good and bad practice. It would be a disservice to offer a dummy’s summary on this blog. What I tried to do was to investigate how much of his specific good advice, as opposed to the general principles, can be put into effect using a standard office software suite. I have LibreOffice. Most of the features apply in Excel, which does offer more: in some case misguidedly, in the 3D pyramid stacked histograms, with a variable lie factor as the data correspond to the heights of the pyramid slices while the eye reads their volume. If you want to make marginal or bubble plots, you will need specialised software like this or this.
I’ll take a worked example. Warning: the page below the fold is large, with many images, pushing the envelope on resolution. The WordPress software seems to muddy the resolution of images so you will need to click on each to get a proper view. Continue Reading…