I'm new to R and bio3d and have been unable to find any answers to my problem. I'm trying to find a way to save graphs/plots generated by bio3d (a R package). So far I have to manually click save as when the graph appears and I have tried many variations of R language to save the graph which either result in no saved file or a small file that cannot be opened. Can anyone give me some pointers please?
In an R script you may try with the following lines:
pdf('nameoftheplot.pdf', width=..., height=...)
Then you can write the R-code that generates your plot, and at the end you should add this last line:
dev.off()
Select all the lines and run them with cmd+R (Windows) or cmd+enter (OS X). The output pdf file with the plot should be located in your current working directory. Hope this works.
Edit: if you want a .png file as an output you have to replace the first line with:
png('nameoftheplot.pdf', width=..., height=..., res=...)
Edit2: Example:
pdf("firstplot.pdf", width=6, height=3)
qplot(carat, data = diamonds, geom = "density")
dev.off()
If you have already created your plot (i.e. it is displayed in the active quartz or x11 window) you can use dev.copy2pdf() and it relatives, e.g.
plot(c(1:10))
dev.copy2pdf(file="example.pdf")
If you want to do this without plotting to the quartz/x11 window then issue a call to png() or pdf() etc before your plot() call and then follow it with a dev.off() call, e.g.
pdf(file="example2.pdf")
plot(c(1:10))
dev.off()
The 'plot.new figure margins too large' error can occur when your plot window is too small to take all the graphic output you are trying to produce. Often making your window bigger will solve this.
Related
I want to use a R script which is publicly available from Wikipedia: https://commons.wikimedia.org/wiki/File:Correlation_examples2.svg .
This program is supposed to output an image but for some reason when I paste the code to Rstudio it doesn't plot.
What can I do to make it output the image?
Two main reasons:
The script by itself doesn't plot anything. It just sets up the function that will generate the image. So pasting the code by itself won't help and you need to call the 'output' function.
However the function by itself doesn't plot anything either. It saves the plot as Rplots.svg which contains the .svg code to plot the images.
To display the plot in RStudio, use for example the magick package.
output()
magick::image_read_svg('Rplots.svg')
Alternatively you can open the Rplots.svg file with a browser of your choice.
Is there any way to save the plots by code in RStudio?
Like something in Python save.plt().
I have noticed the function savePlot can save the figures but I cannot load it in RStudio, since it reports the errors in loading X11().
This leads me to think about another question... What is your way to using R or what is the proper way to using R? As a beginner I found RStudio is super easy to use and I like the idea that saving all the environments into a single file. But apparently it is no need to using X11() in plotting...
If you want to save from code the plot that is displayed in the RStudio plot tab then you have to call for example
rstudioapi::savePlotAsImage("test.png",width=300,height=150)
Plots can be saved as a jpg:
jpeg("Name_of_your_plot.jpg")
# your plot for example
plot(x,y)
dev.off()
Instead of jpg you can choose other image formats such as png, pdf or PostScript. The above code can be modified as:
png("Name_of_your_plot.png")
# your plot for example
plot(x,y)
dev.off()
If you have a ggplot you can use ggsave.
I've generated a number of plots in R, but two specific ones are giving me fits. I have two point processes from R (.ppp objects) that I've generated plots from, but no matter what file type I save them as, Texmaker will not read them in properly. I've tried using .eps files and the epstopdf package, but would only get an empty plot (only the axes and no points). I've tried saving the plot as a .png, .jpeg, and .pdf using the instructions (minus rsweave) here Getting R plots into LaTeX?, but every time I try to compile, I get the error "no output PDF file produced!" because "reading image file failed". I'm at my wit's end here.
I'm using Texmaker along with miktex 2.9, if that helps.
Edit: Don't use dev.new() after using png() when saving images in R (shown in the link). That is what was causing the load error.
I have the following problem using R and not found a solution so far:
I have a script where I run several operation and generate some plots. At the end, I would like to have a nice piece of code that automatically saves all the plots generated into the current working directory. So far, I am using:
trellis.device(device="png", filename="Plot_A.png")
print(Plot_A)
dev.off()
Which is working fine for just one specific plot. Now I am looking for some kind of for loop that takes all the plots and saves them with the name of the plot as a png file
In grid based plotting packages (lattice and ggplot), you can store the plot in an object and call print on them to trigger actual rendering of the plot. What you could do is not render the image on the spot, but append any plots to a list. Then, at the end, you can loop over the plots and output them.
plot_list = list()
lattice_plot = xyplot()
plot_list = append(plot_list, lattice_plot)
for(plot in plot_list) {
png('name.png')
print(plot)
dev.off()
}
Not exactly an answer but an alternative workflow.
If you are saving your plots in order to use it somewhere else, for example to include them in a Word document or in a presentation, you could just put your code in an RMarkdown document and knitr it to generate an html or doc document with all the output generated by the code, including plots. With RStudio all that could be done with a few clicks.
It may even be easier to take all plots from the Word document than from a folder of png files.
I wonder how to redirect R graphs to MS Word? Like sink() redirect the R output to any file but not the graphs. I tried R2Wd but sometimes it doesn't work properly. Any comment and help will be highly appreciated. Thanks
To answer your direct question, the best way to get the results of R scripts and plots into word is probably via some form of Sweave. Look up odfweave to send R output to a LibreOffice file that can then be converted to word, or even opened directly in Word if you have the right plugin.
To create plots that can be editable (i.e you can alter the look of plots, move the legend etc) I would recommend saving the plot to an svg format (scalable vector graphic) that you can then edit using the excellent free vector graphics app inkscape.
For instance, if I create my ggplot2 graph as an object
library(ggplot2)
dataframe<-data.frame(fac=factor(c(1:4)),data1=rnorm(400,100,sd=15))
dataframe$data2<-dataframe$data1*c(0.25,0.5,0.75,1)
testplot<-qplot(x=fac, y=data2,data=dataframe, colour=fac, geom=c("boxplot", "jitter"))
You can use the Cairo package, which allows creation of svg files, I can then edit these in Inkscape.
library(Cairo)
Cairo(600,600,file="testplot.svg",type="svg",bg="transparent",pointsize=8, units="px",dpi=400)
testplot
dev.off()
Cairo(1200,1200,file="testplot12200.png",type="png",bg="transparent",pointsize=12, units="px",dpi=200)
testplot
dev.off()
For more info read this previous question that has more good answers Create Editable plots from R
Also, you can follow this advice from Hadley, and save the actual ggplot2 object, then load it later and modify it
save(testplot, file = "test-plot.rdata")
# Time passes and you start a new R session
load("test-plot.rdata")
testplot + opts(legend.position = "none")
testplot + geom_point()
To get sink() like behavior with MSword look at the wdTxtStart function in the TeachingDemos package. This uses R2wd internally, so you will see similar functionality, this just sends everything you do to the word document.
Graphs are not sent automatically since you may be adding to them, but once you know you are finished with the graph you can use wdtxtPlot to send the current graph to the word document.
If you know what you want to do ahead of time then sweave or something similar is probably the better approach (as has already been mentioned). The group that created Rexcel are also working on Sword that does sweave like things within MSword.