Hlep With sun analysis

[Harpy]

Panel_Triangle Bent.rfa (292 KB) Hi all,
I am hoping someone can give me some insight here. I have been looking into using Dynamo too create a thermal map on a surface using the sun settings. I have created the graph and in principle it works, shading the panels (red = high exposure down to green = low exposure) however as you can see, it creates some unexpected result (ie green panels when they should be red).
This is using an adaptive component family on a mass (which is loaded into the project)
I have attached some images, the graph and the panel family. If anyone can tell me why this is not working correctly, I would greatly appreciate it.

SunAngle Effect_Short.dyn (35.7 KB)

[Vikram_Subbaiah]

@Harpy Try normalizing the vectors

SunAngle Effect_Short-1.dyn (31.9 KB)

[Harpy]

HI Vikram,
That worked perfectly. Thank you.
Can you perhaps explain why your process worked and mine didn’t? Why would normalizing he vectors fix the issue?

Thanks again.