printAndSave: Function printAndSave

In jrthompson54/DGE.Tools2: A function library to facilitate Differential Gene Expression Analysis

Description

printAndSave is a wrapper around ggsave. It prints a ggplot2 object to the console/knitr report and saves as a graphic file. It defaults to larger fonts for the graphic file (more suitable for PPT). Graphic filetype is taken from the given filename and can be one of (png, bmp, tiff, jpg, pdf, svg).

Usage

printAndSave(
  plotObject,
  filename,
  width = 7,
  height = 5,
  units = "in",
  res = 300,
  scale = 1,
  printFontSize = 12,
  saveFontSize = 24,
  scaleLegend = TRUE,
  printPlot = TRUE,
  savePlot = TRUE
)

Arguments

plotObject	A ggplot2 plotobject
filename	A path/filename for the graphic
width	Graphic width in inches (default = 7)
height	Graphic height in inches (default = 5)
units	Units for height and width ("in"|"cm"|"mm") (Default = "in")
res	Resolution in ppi (default=300)
scale	Multiplicative scaling factor (Default = 1)
printFontSize	Base font size for the graphic on the console/knitr (default=12)
saveFontSize	Base font size for the graphic file (default=24)
scaleLegend	Scale the legend smaller if font > 14 (Default = TRUE)
printPlot	Print to console if TRUE (Default=TRUE)
savePlot	Print to file if TRUE (Default = TRUE)

Details

I found I didn't like the default Legend sizes. I inserted code to increase the size of the print/knitr legend and decrease the size of the legend in the saved graphic file. This works well for images of about 5-7 inches but may not scale well to other image sizes. Set scaleLegend to FALSE to get the default behavior back or use legend.key.size in a theme to tweak to your own specifications.

Value

The print object

Author(s)

John Thompson, [e-mail]

Examples

printAndSave (Myggplot, "myfile.png") #all defaults
printAndSave (Myggplot, "myfile.png", width=5, height=4, res=150, printFontSize=10,
               saveFontSize=18)  #set a few options

jrthompson54/DGE.Tools2 documentation built on May 12, 2021, 8:47 p.m.