pcfind function question

[MadMax50]

Hi,I have a  question in regards to the pcfind function. 

I notice that when I look up the @P attribute I get a random  point order in my array vs when I look up the @Cd attribute.

Why am I getting a random point order in my array when I use @P vs when I use @Cd. 

The expressions im using is this:

i[]@test = pcfind(1,"P",@P,100,5); 

returns:

[ 29, 15, 6, 20, 22 ]

[ 19, 4, 12, 20, 8 ]

[ 28, 2, 18, 11, 35 ]

[ 28, 2, 14, 18, 22 ]

...

...

 

i[]@test = pcfind(1,"P",@Cd,100,5); 

returns:

[ 29, 15, 6, 20, 22 ]

[ 29, 15, 6, 20, 22 ]

[ 29, 15, 6, 20, 22 ]

[ 29, 15, 6, 20, 22 ]

...

...

 

As you can see, The @Cd lookup is returning all the same point order in the array , whereas the @P lookup is giving me a random point order. 

Why is this ?

I will attach my file for anyone that wants to see. 

Thank you

 

pcfind_attributes.hipnc

Edited September 25, 2020 by MadMax50

[anim]

it's not random order, it's ordered by proximity

you are looking up n-points in 2nd input whose "P" attrib value is within certain radius from certain value

1. from value of @P, which is different for each point, therefore you will get different points that are closest to that value @P ordered from closest

2. from value of @Cd, which is the same for each point (since nonexistent on first input it's the default value of) {1, 1, 1}, therefore for each point you will get the same array of points ordered by proximity to {1, 1, 1}

[MadMax50]

@anim Thank you for the reply anim. Not sure I understand fully. How is the pcfind function searching for the closest point ? Isn't it based of distance? Why would it matter if the @Cd value is the same .

Thank you