Unwanted line that generated when importing ground data by .csv

[Solaranger]

So, i was modelling a shading scene and used a ground data from .csv, but when i import the data, there are some lines that generated in the model even there're no data in my csv file that location point. I'm wondering will this line affect on the near shading simulation? because from the 3d perspective this line is higher than the PV sheds.

Edited March 20 by Solaranger
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[Stéphane]

Hi, the triangulation tries to connect all dots of the model, hence the lines you see. To get better accuracy you can import points for those areas as well. However since the checkbox "Enable shadow casting" is not checked it will have no impact on the simulation. Ground objects are usually used to properly position the PV panels and they are usually not casting shadows, except in specific cases. So you should be good to go.