Chop List by index

Lists-Logic
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1

Hello,

I’m currently working on a furniture family library that should place all types of my families in order to find some bugs in my families. I wrote a script that loads my families, sorts them into categories (seating, tables, lighting, …) via a text parameter they have.

I use the placeInstance.byCoordinate node, so i have coordinates in X,Y and Z direction, Z are different categories as layers, Y are the different families and in X direction all the types of the families should be placed. I figured most of it out somehow.

Now I have a node that has a list of all family types of one cateory and I got a node with a list of indexs which tells me where each family starts, like this:

List1: 0 Table1Type1, 1 Table1Type2, 2 Table1Type3, 3 Table2Type1, 4 Table3Type1, 5 Table3Type2
List2: 0, 3, 4

Does anybody know how I can chop my lists with the help of these indices? There is no way to do it manually with over 300 families and over 800 types…

Thank you!

2

Hi, @vanessa.welsch!

Can you share excel and dyn files? I’ve done similar task some time ago.

3

Hi @Vladimir ,
Sadly I’m not allowed to share the Dynamo file due to company restrictions.
But here is a screenshot with the data:

image

4

Hello, if it can help

image
image1608×877 171 KB

python script

tab=IN[0]
last_index=IN[1]
chop=[]
for i in range(0,len(tab)-1):
    a=tab[i+1]-tab[i]
    chop.append(a)
chop.append(last_index)
OUT = chop

Cordially
christian.stan

5

This could work. I guess we would have to modify the first part as the name of my families are not numbered as in the first example I gave.
How would I count them then? :thinking:

6

maybe:
chop.dyn (18.6 KB)

and one more:
chop2.dyn (22.2 KB)

7

maybe this way

image
image1590×803 149 KB

cordially
christian.stan

8

Thank you!
I tried it with my data and it works perfectly!
I’ll make a custom node out of it and add it to my script. :smiley:

image
image998×459 134 KB

9

@vanessa.welsch, compare my 2 versions, there’s differences at the end of list!

All credits of chop goes to Spring’s node ꟿ List.Subpairs :slight_smile:

10

Thank you!
Both scripts give me the exact same list at the end :smiley:

@christian.stan Thank you too! I appreciate your effort. :smiley: Sadly I wasn’t able to recreate your script as I need the data type “family type” at the end. Your script works well for strings though.

11

The script also returns the family and family type, but it doesn’t matter, the main thing is to have your goal (the means are like the roads to Rome)
I did a training exercise. (good for progress :wink:)
Have a good day
Cordially
christian.stan