Hi guys,
Yesterday I started with Design Scripting and I like it very much! 
Can someone explain to me how lacing works?
Behind which part of my input should I apply the lacing?
For example v6 or vp1
// Sheets ophalen (Get Sheets)
t1 = DocumentTools.Documents.activeDocument();
t2 = DesignScript.Dictionary.ValueAtKey(t1, "activeDocument");
t3 = Category.ByName("Sheets");
t4 = Collector.ElementsOfCategoryInDocument(t2, t3);
// Sheet sorteren ahv gegevens (Sort Sheets)
t5 = Elements.Element.GetParameterValueByName(t4, "Sheet Number");
t6 = String.Contains(t5,"L", true);
t7 = String.Contains(t5,"W", true);
t8 = List.FilterByBoolMask(t4, t6)["in"];
t9 = List.FilterByBoolMask(t4, t7)["in"];
t10 = List.Join([t8,t9]);
t11 = Elements.Element.GetParameterValueByName(t10, "Sheet Number");
t12 = List.GetItemAtIndex(t10, 3);
// Views selecteren en sorteren (Sort en select views)
v1 = Category.ByName("Views");
v2 = Collector.ElementsOfCategoryInDocument(t2, v1);
v3 = String.Split(t11, "_");
v4 = List.GetItemAtIndex(v3<1L>, 1);
v5 = Elements.Element.Name(v2);
v6 = String.Contains(v5<1L>,v4<1L>,true);
v7 = List.FilterByBoolMask(v2,v6)["in"];
v8 = List.GetItemAtIndex(v7,4);
// View plaatsen (Place view on sheet)
vp1 = Rhythm.Elements.Viewport.Create(t12<1L>,v8<1L>,Point.ByCoordinates(0,0,0));
Thanks in advance
Thank you for you’re answer, I did read this topic too but I don’t understand when I need to use <1> or (<2> I dont know of this is available)? And after which input do I have to place this lacing symbol?
good question, i ve never wrote it separtly, i did just code to block
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Haha, so:
Shorterst : <1> after both inputs
Longest : <1L> after both inputs
Cross : 1 input <1> and 1 input <2>
Does it matter which input gets the 1 or the 2?
And what’s happend with more than 2 inputs…
I do the same with the code to node tool but I want to understand how dynamo is thinking haha.
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and two links about advanced lacing:
Teaching people to fish here rather than giving an answer. 
Find a function which takes two inputs produce a clear result, say Point.ByCoordinates(x<1>,y<2>).
Feed it a range like 0…3 for both inputs.
Then disable the geometry preview. Note the list structure should be a list of lists.
Now add a List.FirstItem node to pull the first sublist out of the results.
Now change the <1> to <2> and check the results. Then change the <2> to <1> and see what happens.
Keep playing with input numbers - add a <4> somewhere. Really go nuts with it - after a few it will click.
7 Likes
Ah that is a really nice way to learn this! Thanks!
So this function is more than just lacing?
Yup! It also dictates what input is dominant and the hierarchy of all inputs An excerpt from my Introduction to DesignScript course at BILT EUR 2018 may help explain.
10 Likes
Thank you Sol Amour!
This is a really nice document !
1 Like
