jchitpin / R2pgf

A matlab2tikz inspired wrapper to convert ggplot2 objects into beautiful pgfplot graphs in LaTeX.

Motivation

• You like LaTeX
• You like consistent looking text and figures
• You use ggplot2 for plotting
• You've tried tikzDevice but hate tinkering to make it look less 'R'-like
• You want an automated method of generating pgfplot figures from ggplot2 objects

Notes

• Depending on how complex your plots are, you may have to edit the .tex file for final tweaks
• Please double check the pgfplots graphs with the ggplot2 one to make sure everything looks right

Updates

• This is a heavy work in progress!
• 30/05/2019 - First started on |scatter2pgf|
• TBD: Marker sizes and linewidth are directly converted to 'pt' (too small)
• TBD: Specifying legend aesthetic requires 'x' and 'y' column name for g
• TBD: Specifying legend aesthetic makes x/y-labels 'x' and 'y'
• TBD: Add support for separate fill/border colours
• TBD: Title support

Workflow

1. g <- ggplot(...)
2. g <- ggplot_build(g)
3. R2pgf::function(g, ...)

General features

• User-defined plot width and height
• Redesigned pgfplots marker table for ggplot2 shapes (fill and border colours are the same)

scatter2pgf

• Plots all points separated by aesthetic
• (Marker) size, alpha, fill, and stroke, are all handled automatically (converted to pt)
• stat_smooth linear regression is implemented (no standard error bars yet)
• geom_line for vertical lines is implemented (because vertical lines aren't handled by stat_smooth
• Aesthetic legend groups are automatically generated (need to re-label x/y axis on the plots)