title: R cut with open interval to right puts some values in the wrong interval
body: <p>For what I'm working on in R, I need to cut a numeric vector with a range of -1 to 1.3 into intervals of length 0.1. For this I want the intervals to be closed to the left, and open to the right. However, for some of the values equal to the break points, R puts them in the wrong interval. I would like to ask if other people have this problem too. You should easily be able to replicate my problem with the following code:</p>
  
  <pre><code>breaks = seq(-1, 1.3, by=0.1)
  cut(0.3, breaks, right=FALSE)
  </code></pre>
  
  <p>In the above code, since the left intervals are closed and if I'm not mistaken, the value 0.3 should be put into the interval [0.3, 0.4). However, R puts it into the interval [0.2, 0.3). The same is true for other values between 0 and 1 that are equal to the break points. Curiously though, 0 is placed in the correct interval [0, 0.1), as is 1 which is put into [1, 1.1). 1.1 is also placed into the correct interval [1.1, 1.2), but 1.2 is subsequently placed into the same interval when it shouldn't. </p>
  
  <p>Can anybody help me, and tell me whether they can replicate this problem or give any indication as to what I might be doing wrong?</p>
  
  <p>Thanks!</p>