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In order for PVcase to sucessfully evaluate terrain data it has to work with clearly distinguished objects that indicate topographical height information.
Some of the topographical surveys have many different indicators clustered together on the same layer which can cause errors in terrain recognition.
Before generating a layout it is best to create a Topography mesh using the terrain data you would use for layout generation and to investigate the mesh and PVcase's estimation of the terrain using the 3DORBIT command of AutoCAD.
Let's review an example terrain survey which has some issues. As you can see in the example below, after I've selected the objects indicating terrain heights and generated a topography mesh I can see that there are steep inclinations which are unrealistic and must be regarded as false.
As I check these areas I can identify issues that can cause such extremities. Here are some of the sample ones that usually come up:
- Comma, instead of a dot, is used as a decimal separator in some height measurements.
Solution: Manually change by hand or use the FIND command to change the decimal comma into a dot.
- Tree height measurements are on the same layer as terrain height measurements. (see image below).
Solution: Manually change the layer of tree height measurements.
- Other topographical or documentation indications are on the same layer as terrain height measurements (see image below).
Solution: Manually put the indicative numbers on another layer.
After these issues are resolved we can generate the Topography mesh again and evaluate the results.
For more information on what types of terrain surveys are currently compatible with the software, please read this article: