Points Pull

I have a set of points (A) pulled by 3 other points (B,C,D). B,C, and D are only pulling the closest to themselves. Is there a way to find out how many points are pulled to B,C, and D individually?

Replies to This Discussion

Permalink Reply by Chris Tietjen on February 24, 2011 at 6:12pm

Can you post the definition?

Chris

Permalink Reply by federicochavarria on February 24, 2011 at 11:40pm

this definition is made to see if any bus route in my country (Costa Rica) in doing well and if not what to fix, what i needed to know is exactly where to put the bus stops and how many people will use them, hence the first question. The A point being density of people and b,c,d etc the bus stops.

Attachments:

Funcion 3.3.3dm, 3.6 MB
Funcion 3.3 prueba.ghx, 1.4 MB

Permalink Reply by Danny Boyes on February 25, 2011 at 5:22am

The Pull component is a bit limited in its output, where as, if you use the Closest Point Component you get an index of which point is the closest. From this index you can find the group of points around it and using mass addition find their totals.

Note that this only works with the graft applied to the index input of the equals component.

Attachments:

CatchmentTotals.ghx, 582 KB

Permalink Reply by Danny Boyes on February 25, 2011 at 8:23am

Some more ideas for you. In the attached file I've distributed the stops based on the averaging of the CPs of the grid to the bus route. Also I've added a gradient to highlight areas of higher than average catchment numbers.

Attachments:

CatchmentTotals.ghx, 856 KB

Permalink Reply by federicochavarria on February 28, 2011 at 6:18pm

Sorry I wasn't around, i just saw your replay, thank you so much it really helped my project. Thanks for taking the time and patience to build such a great solution.

FChavarria

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