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| <title>Creating a new Sequencer Tutorial</title> |
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| <h1>Creating a new Sequencer Tutorial</h1> |
| <p>Every scenario must also include a "sequencer" which basically is a clock |
| that<br> |
| regulates time, and an "infector" which sets the initial infectious population. |
| Stem has a build in default<br> |
| sequencer called the "Sequential Sequencer" but you will no doubt want to create |
| your own to specify<br> |
| start time, step size, end time, etc.</p> |
| <p>To create a new sequencer click on the New Sequencer Icon which appears as a |
| little clock.<br> |
| Alternatively, on the menu bar you can select >NEW>SEQUENCER</p> |
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| <img border="0" src="img/sequencer3.jpg" width="58" height="56"></td> |
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| <td align="center"><b>Figure 1: The New Sequencer Icon</b></td> |
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| <p> </p> |
| <p>The "New Sequential Sequencer" Dialog will open as shown in figure 2 below.<br> |
| Specify in which Project to put the Sequencer (it will always go in your |
| Sequencers folder).<br> |
| Give it a name, and select the cycle period and unit. At this point in time STEM |
| only supports<br> |
| constant time steps. In the future new Sequencers will be created that allow |
| variable time steps.</p> |
| <p>Select the starting date.</p> |
| <p>If you wish to specify and End Date be sure to check the <b>"Specify End |
| Date" </b>checkbox.<br> |
| This check box MUST be set for the end date to be editable later.</p> |
| <p>You will then be allowed to set the End Date in the second calendar. <br> |
| </p> |
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| <td align="center"><b> |
| <img border="0" src="img/sequencer1.jpg" width="455" height="636"></b></td> |
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| <td align="center"><b>Figure 2: The New Sequential Sequencer Dialog |
| helps you configure a Sequencer.</b></td> |
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| <p> </p> |
| <p>Once you have created your sequencer it must be dragged into your scenario |
| folder. Follow the instructions<br> |
| under <a href="scenariotutorial.html">"Creating a Scenario". </a> The |
| sequencer can be edited after creation by opening the scenario, selecting the |
| <br> |
| sequencer, and double clicking to open it in the "property editor" at the bottom |
| of the screen (See figure 3).</p> |
| <p> </p> |
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| <td><img border="0" src="img/sequencer2.jpg" width="659" height="586"></td> |
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| <td>Figure 3: Changing the sequencer in the property editor after it has |
| been added to a scenario.</td> |
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