Replace a value in a list with another

Replies to This Discussion

Permalink Reply by djordje on November 26, 2012 at 6:20am

Hi Dimitris,

Use the "Replace members" component:

Attachments:

• replace members.gh, 7 KB

Permalink Reply by DIMITRIS VENIZELOS on November 26, 2012 at 6:31am

Thank you very much! this is the one ! There is something else I would like to ask.. Is there a component that checks if a surface is inside a border, the same way the component

Permalink Reply by djordje on November 26, 2012 at 6:34am

Can you clear that a little bit? Or post a screenshot/sketch of what you want?

You have a closed polygon or curve, and you want to check if the surface is inside of it?

Permalink Reply by DIMITRIS VENIZELOS on November 26, 2012 at 7:08am

Sorry for the delay.. my internet connection is more than bad.. Ok here is te thing . In the uploaded picture you can see a piece of urban fabric.. The aim is to put the buldings into groups so that each group of buildings corresponds to its square. Namely, I want to relate the buildings to their squares. The initial thought was to represent buildings with points and check with ConEx , if each point( and therefore building) is inside the square or not. Then I keep only the points that are inside the area of the square. However, this method cannot provide a relation between actual buildings (as polylines or surfaces) to the squares. So I need to group the polylines that represent the buildings with their respective square, in order to compare several quantities such as built/unbuilt per square etc.. Any ideas?

Attachments:

• PIC1.jpg, 1.1 MB

Permalink Reply by djordje on November 26, 2012 at 7:16am

Sorry I do not understand you.
Maybe somebody else will.

Permalink Reply by DIMITRIS VENIZELOS on November 26, 2012 at 7:18am

ok thanks anyway!

Permalink Reply by David Rutten on November 26, 2012 at 8:54am

There is no check to see whether an entire surface is within a boundary. You can test individual points though, so you could use the Area Centroid if you know that a shape is never part of more than one boundary. Containment Ex is indeed the component you're looking for.

--

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by DIMITRIS VENIZELOS on November 27, 2012 at 4:35am

Thanx David, I quess it should be enough. It is an urban planning project with more or less easy geimetries.. so a building is whether entirely inside a square, or outside. so i guess it is ok to use its centroid .
thnx again

Permalink Reply by djordje on November 27, 2012 at 6:06am

Hi Dimitris,

I was not aware of that component David mentioned, and it seems the solution lies within it.

Maybe this will work for you:

(green surfaces are inside of boundary, orange partly inside, red surfaces are out)

Attachments:

• surfaces.gh, 11 KB
• surfaces.3dm, 69 KB

Permalink Reply by DIMITRIS VENIZELOS on November 27, 2012 at 6:30am

awsome. thats great,

thanx guys.