Dear All
Please excuse my ignorance, I am trying to understand a GHpyhon code from a tutorial as attached.
I understood most of it, except that I couldn’t figure out what the “i” does in the function
def (r,i):
I guess the “r” can be replaced by a geometry to form a loop, but what is the role of the i?
if anyone can let me know in simple “English”(lol I am rather overwhelmed by codes ) I would really be grateful!
Thank you all!
yutaka
function i meaning.gh (2.7 KB)
The i input parametter is never called within the function, it therefore does nothing:
That, plus the extensive use of the ghpythonlib.components namespace, suggests that whomever wrote this code probably shouldn’t be making tutorials.
Hi Anders!
Thanks for your answers, do you mean the ghpthon library should be used less?
Would you have any suggestions of where to learn ghpthon properly?
Thanks !
Correct, it’s basically a Python module that wraps the RhinoCommon node-in-code namespace, which in turn wraps parts of Grasshopper. That’s a whole lot of indirection, when one can usually simply implement RhinoCommon directly (i.e. import Rhino). That said, a lot of Grasshopper components go beyond RhinoCommon and therefor may require using ghpythonlib.components if one cannot implement their underlying functionality directly.
I see that the Rhino.Python Guides appear to have mostly removed its GhPython content. But there is still a lot of relevant learning material there. If you’re willing/able to pay for it I’d suggest enrolling in this class the next time it’s available. It would be great if it was made publicly available similar to the C# classes @LongNguyen has taught over the years.
This McNeel produced video content might also help:
And some quite old, but maybe still relevant video series:
Forgot about this old link too, might be relevant for your fractal funz:
Thank you Anders for your knowledgeable guidance! I will certainly dive into those , glad I posted here !
You are a light house 
