"plot.new has not been called yet" error in rmarkdown (Rstudio 1.0.44)

Question

I am using a recent version of Rstudio with an iMac

Version 1.0.44 – © 2009-2016 RStudio, Inc. Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_1) AppleWebKit/602.2.14 (KHTML, like Gecko)

And I noticed the notebook function for rmarkdown files. When generating plots, the usual "Plots window" is not used any more, and the plots are generated just below the code chunk.

And I have an error for the following code:

plot(seq(1,10,1)) abline(a=0,b=1) 

The error is showed below the code chunk :

Error in int_abline(a = a, b = b, h = h, v = v, untf = untf, ...) : plot.new has not been called yet 

However, when knitting the whole rmarkdown file, there is no error.

So I would like to know how to avoid the error:

• by using another code
• by using the "Plots window"
• or another way.

Answer 1

The following will work

{plot(seq(1,10,1))  abline(a=0,b=1)} 

Answer 2

In RStudio, there's a setting in Preferences -> R Markdown to "Show output inline for all R Markdown documents". To get rid of the error, make sure this is unchecked.