6*3 matrix and put each value row wise in equation f(x,y,z)= [(X-0.33).^2+(Y-0.33).^2+(Z-0.33).^2] and calculate the answer and store that value as 4th column in matrix

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Pratik Anandpara 2016-12-16

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https://ww2.mathworks.cn/matlabcentral/answers/317131-6-3-matrix-and-put-each-value-row-wise-in-equation-f-x-y-z-x-0-33-2-y-0-33-2-z-0-33-2-a

回答： Image Analyst 2016-12-17

firstpop =

     x     y     z  f(x,y,z)
   1     2  
   5     2   
   1     1
   6     1
   2     6
   0     9

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Answer 1

KSSV 2016-12-16

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What is there to do in your question? It is very easy and straight forward. I advice you to read MATLAB basics, it is very straight forward job.

Let data be your 6X3 matrix.
Take x,Y and Z from the data. X = data(:,1) ; Y = data(:,2) ; Z = data(:,3) ;
Define your formula: f= (X-0.33).^2+(Y-0.33).^2+(Z-0.33).^2 ;
You got f, append it to the data.

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Answer 2

Image Analyst 2016-12-17

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If a 3D array is wanted for f instead of a 1-D vector (it's hard to tell from your description), then you need to use meshgrid().

%   x     y     z  f(x,y,z)
firstpop =[...
  6     1     2
  2     5     2
  7     1     1
  2     6     1
  1     2     6
  0     0     9]
x = firstpop(:, 1);
y = firstpop(:, 2);
z = firstpop(:, 3);
% Get all possible combinations
[X, Y, Z] = meshgrid(x, y, z);
% Now compute the 3-D matrix:
f = (X-0.33).^2+(Y-0.33).^2+(Z-0.33).^2;