title: How to write results from simulate to a csv file and import them for parmest
body: <p>I am new with Pyomo, and I am starting with some examples available. One of the applications I would like to handle with Pyomo is parameter estimation especially from DAE models.</p>
  <p>My questions are:</p>
  <ol>
  <li>how to save the data obtained from a simulation (using the Simulator) to a .csv file? Here, data are the time instants and the solution profiles;</li>
  <li>how to import a .csv file for parameter estimation?
  Any suggestions are welcome.</li>
  </ol>