RStudio suddenly stopped showing plots in the plot pane

Question

RStudio is not showing the generated plots in the plot pane anymore. Instead they open in a separate file with the name "Quartz". Here's my session info.:

> sessionInfo() R version 3.3.1 (2016-06-21) Platform: x86_64-apple-darwin13.4.0 (64-bit) Running under: OS X 10.9.5 (Mavericks)  locale: [1] en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8  attached base packages: [1] stats     graphics  grDevices utils     datasets  methods   base       other attached packages: [1] cluster_2.0.4 tm_0.6-2      NLP_0.1-9     ggplot2_2.1.0  loaded via a namespace (and not attached):  [1] colorspace_1.2-6 scales_0.4.0     plyr_1.8.4       parallel_3.3.1   tools_3.3.1      gtable_0.2.0     Rcpp_0.12.5      slam_0.1-35       [9] grid_3.3.1       munsell_0.4.3    

I tried tools > global options > panes > plots is selected.

I don't know what other info to share. I can see the plot pane with "plots" tab active. But it's blank.

Screen:

Notice the new menu with "Quartz" appear. Not sure what this is, but it comes up when R generates the plot and the usual RStudio menu disappears.

How do I get RStudio to display plots in the plots pane?

Answer 1

Try running this:

dev.off() 

Check if it works:

plot(rnorm(50), rnorm(50)) 

Answer 2

I am working with Rmarkdown, and in my case I solved this problem like this:

1. Go to Tools->Global Options->Rmarkdown

2. In "Show output preview in" select "Viewer Pane"

3. Uncheck the box "Show output inline for all R Markdown documents"