Extract specific text lines from R output
<p>I'm trying to extract specific information from a result that I get from a R function package. I'm  only familiar with Python so learning R language gives me some confusion.</p>

<p>Assuming this is the output of appnn (after printing it), a package that predicts protein aggregation</p>

<pre><code>Prediction: 
$sequence
[1] "IFYFYGTTY"

$overall
[1] 1.076839

$aminoacids
          [,1]
 [1,] 1.076839
 [2,] 1.076839
 [3,] 1.076839
 [4,] 1.076839
 [5,] 1.076839
 [6,] 1.076839
 [7,] 1.028888
 [8,] 1.011057
 [9,] 1.011057

$hotspots
$hotspots[[1]]
[1] 1 9
</code></pre>

<p>Now all I need is just read the last 2 numbers (1 and 9), and from that I will have to extract a portion of the given string determined by these number (in this case it is the whole string since its length spans from spot 1 to 9).</p>

<p>In python it's rather simple but I have no idea how to do it with R.
Many thanks.</p>