Omit cartesian coordinate visual aids.
theme_scaffold()
theme_biplot()A ggplot theme.
Geometric data analysis concerns the intrinsic geometry of data. Analyses often use artificial or arbitrary coordinate systems that carry no useful interpretation but instead serve as scaffolding, especially for graphical elements like axes that represent other variables (Gardner, 2001). In such cases, the visual aids (tick marks and labels, grid lines) used to recover the coordinates of the row and column markers would add unnecessary clutter and should be omitted. This partial theme updates the current theme by removing these elements. The biplot theme is an alias included for convenience and backward compatibility.
Gardner S (2001) Extensions of biplot methodology to discriminant analysis with applications of non-parametric principal components. PhD thesis, Stellenbosch University. http://hdl.handle.net/10019.1/52264