<< Click to Display Table of Contents >> Navigation:  Project design > Shadings > Near shadings: Orientations > Introduction

In PVsyst you can define and simulate projects without defining a shading scene, doing so will require you to define your fields orientation in the "Orientations" part of the variant editing dialog.

But when you choose to define a shading scene, you have to match two things :
- the orientations defined in the variant "Orientations" part,
- the active PV area defined in the "System" part by the sub-arrays for each orientation.

If one of these two elements is not matching, PVsyst will not be able to run the simulation.

 

By default PVsyst will try to identify orientations automatically from your scene with a given tolerance, and limit it to 8 different orientations. But the shadings orientation tool allows you to manually define your scene orientations, by grouping PV fields the way you want. It also gives you a lot of information about the current and expected PV areas and orientations in order to match the variant definition.

 

In the following sections you'll also find three use cases :
 
- Checking the scene validity by analyzing the current definition
- Understanding how PVsyst behaves when you import a full scene from Helios3D
- Defining the orientations for a random complex scene