concepts:views
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concepts:views [2009/10/27 00:15] shona.weldon |
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| ====== Views ====== | ====== Views ====== | ||
| + | A dynamic and flexibile way to extend a model, views are a powerful tool in the whatIf? suite. | ||
| - | The power of views is that they are a dynamic and flexible extention to an otherwise resonably static and rigid model. Models, especially once populated with data are pretty ridgid, changing the design and reloading data. Views provide a mechanism for extending the model either through preprocessing input data or additional analysis of output data. | + | Models, especially once populated with data, are fairly ridgid. Modifying a working model requires changing the design and reloading data. Views provide a mechanism for extending the model either through preprocessing input data or additional analysis of output data without changing the model itself. |
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| + | Here's one example of using a view to extend a model by changing input data: | ||
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| + | Suppose you had a model which had a control variable setting up the market share for new vehicles over time. There are many ways to create that data and one must have been used to load the original model. If new a new behavioural model was developed to suggestHowever with a view a new behavior could be calculated as an optimized | ||
| - | One example of using a view to extend a model is writing a view which builds a control variable which ha | ||
| The model is a rigid structure views add a layer of flexibility to that... | The model is a rigid structure views add a layer of flexibility to that... | ||
concepts/views.txt · Last modified: 2010/01/26 12:52 by shona.weldon
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