title: Mathematica: How to apply function to a certain column of a table
body: <p>I would like to apply a function to a specific column of a table. Say to the i-th column of a (m x n) table. Actually I just want to multiply all elements in that column with a scalar, but the application of a general function would be fine as well.</p>
  
  <p>It probably just needs some Map or MapAt command, maybe combined with a Transpose in order to apply to rows instead of columns - but I can't figure out the correct syntax for addressing an entire column (or row)..</p>
  
  <p>Any hints would be highly appreciated.</p>