Selecting multiple branches in a datatree.

Replies to This Discussion

Permalink Reply by David Rutten on April 28, 2014 at 3:35am

Hi Reinder,

do you know the paths to these branches, or the indices of them, or...?

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David Rutten

david@mcneel.com

Permalink Reply by Danny Boyes on April 28, 2014 at 3:39am

Yes, you can construct the Mask yourself from text. Here's an example:

Attachments:

• dynamicMask.gh, 32 KB

Permalink Reply by Danny Boyes on April 28, 2014 at 3:42am

Another Variation

Permalink Reply by reinder weenink on April 28, 2014 at 4:22am

Hi David and Danny,

Thanks for the replies. I've added my grasshopper file to explain what im after.

Reinder Weenink

Attachments:

• test2.gh, 14 KB

Permalink Reply by Danny Boyes on April 28, 2014 at 4:32am

Without any geometry[1] it still makes it difficult to understand what it should look like. But the Theory remains the same.

[1] You can Internalise Geometry into a GH file By Right Clicking on the Parameter you have referenced Geometry from and selecting Internalise from the Context Menu

Attachments:

• test2_db.gh, 18 KB

Permalink Reply by Arend on April 28, 2014 at 4:49am

Here's the solution I generally use for that (also my #1 tool in debugging datatrees)

Which in essence is a extremely simple C# script, with one DataTree<object> input, one integer input, and the one line of code:

A = tree.Branches[i];

The code in the file contains a little bit more love, not to be thrown around with all kinds of null exceptions.

private void RunScript(DataTree

Attachments:

• selectBranches.gh, 10 KB

Permalink Reply by reinder weenink on April 28, 2014 at 5:01am

Thanks so much!

Reinder Weenink

Permalink Reply by Edward Fransen on March 8, 2019 at 8:13am

Hello everyone,

I have a similar problem, which I cannot solve by the advice already given.

I am trying to extract branches from a tree by indices from branches from another tree. 

So I have tree 1 with 9 branches and tree 2 with 26 branches which each have 4 indices corresponding to one of the branches of tree 1. Now I would like to have for every branch of tree 2 the corresponding 4 branches of tree 1. The result would have a path in the form of {0 to 25;0 to 3}.

So far, the only way I have managed to get something close is by using the 'Explode Tree' component. However, I want it to be dynamical, so that the amount of branches in both trees can vary. In this setting the explode tree component would have to be changed manually to fit the right amount of branches.

Could anyone give me some advice?