The size of a model might be measured in several ways.
Firstly, you might mean the dimensions of the area covered.
A model is limited to 2048x2048 tiles. By default, tiles are 500 m square, so this is an area of 1024x1024 km (over 1 million square kilometres). The area of the UK is about 244,000 square kilometres, but the distance from Land's End to John O'Groats is about 1000 km, so it may be possible to have the whole of Great Britain in a single model. I haven't tried this, so I don't promise it!
Furthermore, it is possible to make tiles larger, so then the model could cover a larger area. We do not support or recommend this.
Secondly, you might mean the amount of detail in the model.
There are no built-in limits to the number of objects that you can have in a model. However, you will be limited by the size of the computer memory and the processing time. You do not necessarily get more accurate results by having more detail. The propagation models used by Calculation of Road Traffic Noise and the other calculation methods often make fairly broad assumptions and NoiseMap spends quite a lot of its processing time on condensing down the model detail to the level of the basic assumptions. So a simple model that contains the essential detail will be just as accurate as one that contains a lot of irrelevant detail that must be eliminated before calculation can take place.
Thirdly, you might mean the number of results that you can store.
Results do take up a great deal of storage in the database. Again, there is no limitation on how many results you can store. The new results explorer makes it much easier to see what results you have stored in your database. At the time of writing, there is no system for deleting unwanted results, although if you re-do the same calculation, this will replace the previous calculation.
Remember that loading and calculation time will be heavily dependent on the physical size and amount of detail in a model. We strongly recommend that you use the 'Named Area' feature to divide a large model into smaller areas to make it easier to deal with.
