title: parsing and creating new data set for a selected Mainstep
body: <p>I have huge data file with strings as heading for each column. Among those 17 columns, the 2nd column has <code>MainSteps</code>, which I want to use to plot the parameters present in the remaining columns. For example:</p>
  
  <pre><code>column1 column2     cloumn3    column4    column5   column6   column7 ......
  num1    Mainstep1    num3       num5       num7
  num2    Mainstep1    num4       num6       ...
  ...     ...          ...        ...        ...
  
  ...     Mainstep2    ...       ...         ...
  </code></pre>
  
  <p>The requirement is to parse according to <code>Mainstep1</code>, then get all the parameters recorded from the csv file for only that <code>Mainstep1</code>. With those parameters, plot between <code>column1</code> vs. <code>column3</code> or <code>column5</code> vs. <code>column6</code>.</p>
  
  <p>I am new to programming. Sometimes I struggle to find accurate words that programmers use to ask questions. Please ask if clarification is needed in terms of the question meaning. </p>
  
  <p>The preferred output is to print all the data of two parameters of x- and y-axis corresponding to a specific <code>Mainstep</code>. I hope I have clarity in the question.</p>