MATLAB: How to prevent over-writing in the for loop

for loopinterpolationlooploops

My interpolation for loop keeps over-writing the last value, even though I assigned x2=zeros(N,2).
clear; clc;
  Folder = cd;
  N=100;
  x2     = zeros(N, 2);
  for k = 1:N;
    Driftt  = sprintf('Drift%d.out', k);
    Reactt  = sprintf('React%d.out', k);
    matDrift     = importdata(fullfile(Folder, Driftt));
    matReact = importdata(fullfile(Folder, Reactt));
    x1= matDrift(:,2);
    y1= -sum(matReact(:,2:11),2);
  [x3, ix] = unique(x1);
  y3       = y1(ix);
    [y2] = [500000, 5000000, 7000000, 8000000, 900000, 13000000, 14000000];
    x2 = interp1(y3, x3, y2, 'linear')
    end

Best Answer

Your loop needs to provide an index into x2
x2(something)= interp1(y3, x3, y2, 'linear')
to tell it where to store things.
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