MATLAB: How to sort only first column in matlab

MATLAB

X=0.5 1.0;0.1 2;2.5 4 output must be like 0.1 2;0.5 1.0;2.5 4

Best Answer

Use the sortrows funciton:

X = [0.5 1.0;0.1 2;2.5 4];
Output = sortrows(X, 1)
Output =
          0.1            2
          0.5            1
          2.5            4

Related Solutions

MATLAB: Find series of maxima of array (and matrix) within blocks of size n

You could use rehsape and max:

[reshape(max(reshape(A',5,[])), [], size(A,1))]'

Test:

A=[1 2 5 1 0 0 5 0 1 2 4 0 5 3 2 0 1 0 0 5] 
[reshape(max(reshape(A',5,[])), [], size(A,1))]'
A=[1 2 5 1 0 0 5 0 1 2 4 0 5 3 2 0 1 0 0 5; 1 2 5 1 0 0 7 0 1 2 4 0 7 3 2 0 1 0 0 5; 1 2 5 1 0 0 5 0 1 2 4 0 5 3 2 0 1 0 0 5;] 
[reshape(max(reshape(A',5,[])), [], size(A,1))]'

ans =

5 5 5 5

ans =

5 5 5 5

5 7 7 5

5 5 5 5

MATLAB: How can i create matrix for all possible combination

Use ndgrid:

>> [deltaM,phiM] = ndgrid(delta,phi);
>> [phiM(:),deltaM(:)]
ans =
         0.05         0.05
         0.05          0.1
         0.05         0.25
         0.05          0.5
         0.05            1
         0.05            2
         0.05            3
          0.1         0.05
          0.1          0.1
          0.1         0.25
          0.1          0.5
          0.1            1
          0.1            2
          0.1            3
          0.2         0.05
          0.2          0.1
          0.2         0.25
          0.2          0.5
          0.2            1
          0.2            2
          0.2            3
          0.5         0.05
          0.5          0.1
          0.5         0.25
          0.5          0.5
          0.5            1
          0.5            2
          0.5            3

Best Answer

Related Solutions

MATLAB: Find series of maxima of array (and matrix) within blocks of size n

MATLAB: How can i create matrix for all possible combination

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