Schneirographs

A Blog about Data Analysis and Visualization Using R

My lua filters

lua

pandoc

A collection of lua filters

W. Joel Schneider

Making a custom arrowhead for ggplot2 using ggarrow and arrowheadr

ggplot2

The ggarrow package allows any polygon to be an arrowhead.

W. Joel Schneider

Annotated equations in ggplot2

ggplot2

Importing latex into ggplot2

W. Joel Schneider

Creating collapsible output with knitr chunk hooks

knitr

markdown

How to make the output of a knitr code chunk collapsible using knitr hooks.

W. Joel Schneider

Splitting sentence texts into roughly equal segments

ggplot2

For long text labels on the y-axis, splitting them into roughly equal segments can look better.

W. Joel Schneider

Insert Text from One Markdown Document into Another

markdown

A function for retrieving a div or span from another markdown document

W. Joel Schneider

Making text labels the same size as axis labels in ggplot2

ggplot2

The geom_text and geom_label functions do not specifiy text size the same way as the rest of ggplot2 elements do. For consistent text sizes, we can apply a simple conversion.

W. Joel Schneider

Bar chart labels on smooth paths in ggplot2

ggplot2

Placing stacked bar chart labels on a smooth path makes them easier to compare.

W. Joel Schneider

Point labels perpendicular to a curve in ggplot2

ggplot2

How to place legible labels for points on a curve in ggplot2

W. Joel Schneider

Caption on same line as axis title in ggplot2

ggplot2

You can put the caption on the line as the x-axis title

W. Joel Schneider

Concatenating vectors unless a vector is empty

R

The paste and paste0 functions have a recycle0 argument that returns an empty vector when any part of the string is empty.

W. Joel Schneider