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Plotting in LaTeX with ggplot2 in R and using tikzdevice

5 messages · Ecstasia Tisiphoni, Jeff Newmiller, Paul Murrell +2 more

Original
Ecstasia Tisiphoni
# 
Hello,
not totally sure if this is a R or a LaTeX topic...

I am a total newbie to R and LaTeX, and trying to write my masters
thesis right now... I tried to get this answered via
https://cran.r-project.org/web/packages/tikzDevice/vignettes/tikzDevice.pdf
 ...but I failed... :(

I am creating plots in R via ggplot2, and converting them to TeX
format via tikzDevice.

Now many of my plots have a legend on the right, which differs in size
(depending of course on the legend title and text).

If I now convert my Rplot using tikz() it only scales the size for the
whole image it creates.

What I want is: the rectangular plot itself to always be the same size
for all my plots (no matter how big/small the legend and the axis
numbers are)...

My Rscript with some test Data:

library(ggplot2)
library(scales)
require(grid)
library(tikzDevice)


#setting time zone
options(tz="Europe/Berlin")

tikz(file = "my_output_file.tex", standAlone=F,width = 6, height = 3)


cars['dt'] = seq(Sys.Date(),Sys.Date()-980,-20)
plot <- ggplot(cars,aes(y=speed,x=dist,color=as.integer(dt)))+
               geom_point(size=2,alpha=0.7)+
               xlab("distance")+
               ylab("speed")+
               scale_color_gradientn("dt",
                                     colours=rainbow(6)
                                     )+

#textsize
theme_bw()+
theme(legend.position="right",
      legend.key.height=unit(2,"lines"),
      legend.title=element_text(size=rel(0.8)),
      legend.text=element_text(size=rel(0.8)),
      axis.text.y=element_text(angle=90,
                               hjust=0.5),
      axis.title=element_text(size=rel(0.8))
 )

print(plot)

dev.off()


If I change now the legend text to a slightly longer text, the output
of course has a completely different plot-size.
Is there a way to maintain the plot size?

I hope somebody can help me, or lead me to the information I need...
Jeff Newmiller
# 
I would think knitr package would be useful in this endeavor. And possibly RStudio....

If that doesn't do it,  someone here may have a better hint, but solving this kind of question can require studying both the input (R code) and output (tikz/LaTeX code). While the R code belongs here, details of the rest get OT pretty quick.
Paul Murrell
# 
Hi

You might need an approach that converts the ggplot object to a gtable 
and then either combine the gtables as here ...

http://stackoverflow.com/questions/16255579/how-can-i-make-consistent-width-plots-in-ggplot-with-legends

... or explicitly control the width of the plot within the gtable layout 
as here ...

http://stackoverflow.com/questions/30571198/how-achieve-identical-facet-sizes-and-scales-in-several-multi-facet-ggplot2-grah/30571289#30571289

Hope that helps

Paul
On 04/08/16 09:20, Ecstasia Tisiphoni wrote:

  
    

      
      
    

  


  


      

    

    

      
      

        


  

        

      Ulrik Stervbo
    

    

      
      #
    

  


  

      
I saved my plots as pdf and used pdflatex. It's a few years ago and now you
can even use the r-package cowplot to create panels with subfigures. That
means more work with r, less manual work.

I believe kable from the knitr package can export tables for latex too.

Hope this helps.
Ulrik

Paul Murrell <paul at stat.auckland.ac.nz> schrieb am Do., 4. Aug. 2016 03:50:

            

      
      
      
    

        

      
      
    

        

      
      
    

        

  
  


  


      

    

    

      
      

        


  

        

      Richard M. Heiberger
    

    

      
      #
    

  


  

      
I suggest the microplot package that I placed on CRAN several weeks ago.

Description:

     Prepare lists of R graphics files to be used as microplots
     (sparklines) in tables in either LaTeX or HTML files.  For LaTeX
     use the Hmisc::latex() function or xtable::xtable() with Sweave,
     knitr, rmarkdown, or Emacs org-mode to construct latex tabular
     environments which include the graphs.  For HTML files use either
     Emacs org-mode or the htmlTable::htmlTable() function to construct
     an HTML file containing tables which include the graphs.  Examples
     are shown with lattice graphics, base graphics, and ggplot2
     graphics.  Examples for LaTeX include Sweave (both LaTeX-style and
     Noweb-style), knitr, emacs org-mode, and rmarkdown input files and
     their pdf output files.  Examples for HTML include org-mode and
     Rmd input files and their webarchive HTML output files.  In
     addition, the as.orgtable function can display a data.frame in an
     org-mode document.

For your task, the idea would be to construct a multi-panel plot using ggplot
and then capture each panel into a separate pdf file.
The files would then all be scaled identically.
Capture the legend material into a separate pdf file.
Use the as.includegraphics function on each pdf filename
and place the resulting strings into a LaTeX table with the
Hmisc::latex function.

Please see the vignette included with the microplot package for details.
    vignette("rmhPoster", package="microplot")
The vignette is my poster session from the useR conference last month
at Stanford.
The complete R code for all examples in the vignette is in file
    paste0(system.file(package="microplot"), "/doc/rmhPoster.R")

The vignette and the examples use lattice.

A simple working example using ggplot is included in the ?microplot help file.
Simple working examples are also shown for base graphics and for all the
output options listed in the Description.

Rich

        
On Wed, Aug 3, 2016 at 5:20 PM, Ecstasia Tisiphoni <ecstasia1 at gmail.com> wrote: