lists, matrices, branches in python

Hi all,

a bit of confusion when you import/export data/trees in python components. Attached is a screen-shot of a simple comparison example (x is on Tree Access) if anyone can tell me how after transposing a matrix of data in python I can reconstruct the data as tree branches, similiar to the flip matrix component. Why are guids appearing instead of point

is there a good reference online for python/gh data management and rhino.common? trying to avoid as much as possible gh components.

thanks

Pav

Attachments:

flipmatrixpython.jpg, 573 KB

Replies to This Discussion

Permalink Reply by Giulio Piacentino on December 6, 2013 at 12:57pm

Hi Pavlos

Grasshopper does not understand enumerables of enumerables, so you cannot return a list with lists inside. By itself, I do not think that it makes much sense to try to redo Grasshopper components, except if it's for the sake of satisfying curiosity. For DataTrees, especially, I would even suggest to try to avoid them as they are somehow a irksome topic in general.

However, if necessary, the specificity of Grasshopper datatrees was covered in detail in this somewhat long discussion. Does it help?

Giulio
--
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Permalink Reply by Pavlos Fereos on December 6, 2013 at 1:17pm

hi Giulio,

i'm not trying to redo GH components... but ok yes I am ! i'm just trying to iterate through a large set of point matrices that need to be transposed, without needing to use in GH a separate tree branch and flip matrix everytime the input points are changed.

Your link though has a lot of reading, the answer could be there !

thanks

Pav

Permalink Reply by Manuel Muehlbauer on September 8, 2016 at 10:44pm