title: Possible to re-calculate a response surface design experiment in R from old results in StatEase?
body: <p>I am trying to replicate some results which was produced using an old StatEase 6 software several years ago. I had done a constrained design, response surface model, D-optimal design.</p>
  <p>Parameter 1 ranged from a value of 12 to 10.5. Parameter 2 ranged from 18 to 3. I wanted to optimise the yield of my reaction.
  I just want the final equations which can generate the relevant 3Dplot and corresponding statistical analysis of significance.</p>
  <p>Back then, the table the software generated (and the corresponding results generated in the lab) are shown in the table below:</p>
  <p>|Block 1|</p>
  <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th style="text-align: left;">Parameter1</th>
  <th style="text-align: left;">Parameter2</th>
  <th style="text-align: center;">Yield</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td style="text-align: left;">10.5</td>
  <td style="text-align: left;">3.0</td>
  <td style="text-align: center;">5.8</td>
  </tr>
  <tr>
  <td style="text-align: left;">10.5</td>
  <td style="text-align: left;">18.0</td>
  <td style="text-align: center;">6.1</td>
  </tr>
  <tr>
  <td style="text-align: left;">11.25</td>
  <td style="text-align: left;">10.5</td>
  <td style="text-align: center;">7.9</td>
  </tr>
  <tr>
  <td style="text-align: left;">11.25</td>
  <td style="text-align: left;">10.5</td>
  <td style="text-align: center;">8.7</td>
  </tr>
  <tr>
  <td style="text-align: left;">11.25</td>
  <td style="text-align: left;">10.5</td>
  <td style="text-align: center;">11.8</td>
  </tr>
  <tr>
  <td style="text-align: left;">12.00</td>
  <td style="text-align: left;">3.0</td>
  <td style="text-align: center;">4.8</td>
  </tr>
  <tr>
  <td style="text-align: left;">12.00</td>
  <td style="text-align: left;">18.0</td>
  <td style="text-align: center;">8.7</td>
  </tr>
  </tbody>
  </table>
  </div>
  <p>|Block 2|</p>
  <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th style="text-align: left;">Parameter1</th>
  <th style="text-align: left;">Parameter2</th>
  <th style="text-align: center;">Yield</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td style="text-align: left;">10.19</td>
  <td style="text-align: left;">10.5</td>
  <td style="text-align: center;">8.5</td>
  </tr>
  <tr>
  <td style="text-align: left;">11.25</td>
  <td style="text-align: left;">0.0</td>
  <td style="text-align: center;">0.21</td>
  </tr>
  <tr>
  <td style="text-align: left;">11.25</td>
  <td style="text-align: left;">10.5</td>
  <td style="text-align: center;">9.4</td>
  </tr>
  <tr>
  <td style="text-align: left;">11.25</td>
  <td style="text-align: left;">10.5</td>
  <td style="text-align: center;">8.5</td>
  </tr>
  <tr>
  <td style="text-align: left;">11.25</td>
  <td style="text-align: left;">10.5</td>
  <td style="text-align: center;">10.1</td>
  </tr>
  <tr>
  <td style="text-align: left;">12.31</td>
  <td style="text-align: left;">10.5</td>
  <td style="text-align: center;">8.9</td>
  </tr>
  <tr>
  <td style="text-align: left;">12.31</td>
  <td style="text-align: left;">21.1</td>
  <td style="text-align: center;">8.5</td>
  </tr>
  </tbody>
  </table>
  </div>
  <p>I am unable to plug these values and do the analysis even after referring to this nice tutorial: <a href="https://bookdown.org/gerhard_krennrich/doe_and_optimization/doe2.html#optimal-designs" rel="nofollow noreferrer">https://bookdown.org/gerhard_krennrich/doe_and_optimization/doe2.html#optimal-designs</a></p>
  <p>I would appreciate the help.</p>