MATLAB: Hi everyone, can you help me to solve following program

interleaver

A= [1 2 3, 4 5 6, 7 8 9]

B= [2 2 2, 2 2 2, 2 2 2] C matrix should be in follwoing form

 C=
  1     2     2
  4     2     2
  7     5     3
  2     8     6
  2     2     9

How can I get this resultant matrix C? Thanks

Best Answer

>> A = [1,2,3;4,5,6;7,8,9];
>> B = 2*ones(3);
>> C = [A;B];
>> C = reshape(C(1:end-3),[],3)
C =
   1   2   2
   4   2   2
   7   5   3
   2   8   6
   2   2   9

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>> A = [1 1 1 1 4 4 4 4 6 6 6 6 6 6];
>> B = [2 2 2 2 2 2 2 2 2 2 7 7 7 7 7 7 7 7 8 8 8 8 9 9 9 9];
>> N = min(numel(A),numel(B));
>> C = [reshape([A(1:N);B(1:N)],1,2*N),A(N+1:end),B(N+1:end)]
C =
   1   2   1   2   1   2   1   2   4   2   4   2   4   2   4   2   6   2   6   2   6   7   6   7   6   7   6   7   7   7   7   7   8   8   8   8   9   9   9   9

MATLAB: How to fit a series of datapoints using 3 piecewise linear fit lines

Use this FEX

load data.mat % attached above
ydata(end) = []; % your xdata/ydata do not match in length ! 
slope0 = struct('p', 1, 'x', [min(xdata) max(xdata)], 'v', [0 0]);
% Download BSFK function here
% https://www.mathworks.com/matlabcentral/fileexchange/25872-free-knot-spline-approximation
pp = BSFK(xdata,ydata, 2, 3, [], struct('KnotRemoval', 'none', 'pntcon', slope0)); 
% Check
figure
xi = linspace(min(xdata),max(xdata));
yi = ppval(pp,xi)
plot(xdata,ydata,'b',xi,yi,'r');
for xb=pp.breaks
    xline(xb);
end
grid on

Best Answer

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MATLAB: Create a new array from an intersection of two previous arrays

MATLAB: How to fit a series of datapoints using 3 piecewise linear fit lines

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