how to add "null" to a list of 3dpoint?

I have a list of 3dpoint, I want to Assign a "null" value to it , I use add(nothing) method,but the result become “0,0,0” ,How can i add "null" to a list of 3dpoint?

thanks.

Replies to This Discussion

Permalink Reply by ng5 Alex on August 6, 2017 at 7:54am

Hello,

you can try Insert items component.

best

alex

Permalink Reply by chu on August 6, 2017 at 8:39am

for examples? I am newbie.

Permalink Reply by ng5 Alex on August 6, 2017 at 8:42am

in the description you can see that it will insert a null to the index you specify, if no value to insert is given.

Permalink Reply by chu on August 6, 2017 at 8:50am

thanks very much ,but I need to insert "null" in my vb script component.

Permalink Reply by David Rutten on August 6, 2017 at 9:29am

You didn't post this in the C#/VB forum, which is why you're getting regular solutions. I'll move the discussion.

Permalink Reply by ng5 Alex on August 6, 2017 at 8:54am

I am sorry, i did not realize the vb part. (no flags despite the add(nothing method).

I guess maybe you have seen this. Maybe it could help you.

Permalink Reply by chu on August 6, 2017 at 8:55am

thanks.

Permalink Reply by David Rutten on August 6, 2017 at 9:30am

You cannot assign nulls to collections containing value types. Value types by their definition are never null. You can assign Point3d.Unset, which is an invalid point.

If you want to output nulls, you'll have to make a List(Of GH_Point). Assign Point3ds to the ones that exist and leave the rest null.

Permalink Reply by chu on August 6, 2017 at 5:41pm

thanks very much .

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