"plot.new has not been called yet" error in rmarkdown (Rstudio 1.0.44) : <p>I am using a recent version of Rstudio with an iMac</p>

<blockquote>
  <p>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)</p>
</blockquote>

<p>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.</p>

<p>And I have an error for the following code: </p>

<pre><code>plot(seq(1,10,1))
abline(a=0,b=1)
</code></pre>

<p>The error is showed below the code chunk : </p>

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

<p>However, when knitting the whole rmarkdown file, there is no error.</p>

<p>So I would like to know how to avoid the error:</p>

<ul>
<li>by using another code</li>
<li>by using the "Plots window"</li>
<li>or another way.</li>
</ul>
