title: Using Rattle package on R
body: <p>I am trying to get comfortable with the 'rattle' package in R. I am having issues building a neural network using this package. </p>
  
  <p>I have a training data set of 140 columns and 200000 rows and a target variable that takes values from 0-4 depending on the class it belongs to. It is a classic pattern classification problem. </p>
  
  <p>When I load my data into rattle, the option of 'neural network' under 'Model' tab is de-activated. Is there a pre-requisite that my data doesn't fulfil? </p>
  
  <p>I know I can use neural network specific packages to implement one, but the situation requires me to use rattle. </p>
  
  <p>Any clues/suggestions are very much appreciated. </p>
  
  <p>Thanks in advance!</p>