Help sorting a matrix into other matrix

I have one matrix that we will call the postitions matrix

positions = (1 2 3, 4 5 6, 7 8 9);

Then we have the matrix that needs to be sorted into the positions matrix

XYColor =
     1     3     1     1     1
     1     2     1     0     1
     1     1     0     1     0
     2     1     0     0     1
     2     2     1     1     1
     2     3     1     0     0
     3     1     1     0     0
     3     2     1     0     0
     3     3     1     1     0
    %x     y     rgb triplet associated with the x and y 

What I need to do is take the x and y and put it a certain place in the position matrix and name that place by its color

This is a example i hand typed

    WCent =
    
Green   Blue    Red
(1 1)   (2 1)   (3 1)

Orange  White   Red
(1 2)   (2 2)   (3 2)

White   Red     Yellow
(1 3)   (2 3)   (3 3)

so position 3 was replaced by the color white, which was the color for the x=1 and y=3 XYColor

My intial idea was to a triple for loop along with some ifs, but I am not able to due to my beginner status

Answer 1

[darova]

What about interpolation?

clc,clear

XYColor = [
     1     3     1     1     1
     1     2     1     0     1
     1     1     0     1     0
     2     1     0     0     1
     2     2     1     1     1
     2     3     1     0     0
     3     1     1     0     0
     3     2     1     0     0
     3     3     1     1     0];
x = XYColor(:,1);
y = XYColor(:,2);
r = XYColor(:,3);
g = XYColor(:,4);
b = XYColor(:,5);

FR = scatteredInterpolant(x,y,r);
FG = scatteredInterpolant(x,y,g);
FB = scatteredInterpolant(x,y,b);

[x1,y1] = meshgrid(1:0.2:3);
r1 = FR(x1,y1);

surf(x1,y1,r1)