title: Why do vector indices in R start with 1, instead of 0?
body: <p>What is the reason that vector indices in <code>R</code> start with <code>1</code>, instead of the usual <code>0</code>?</p>
  
  <p>Example:</p>
  
  <pre><code>&gt; arr&lt;-c(10,20)
  &gt; arr[0]
  numeric(0)
  &gt; arr[1]
  [1] 10
  &gt; arr[2]
  [1] 20
  </code></pre>
  
  <p>Is it just that they want to store extra information about the vector and didn't know where to store it except as the vector's first element? </p>