MATLAB: How to generate a random matrix with a constraint or step range

homeworkMATLABrandomrandom number generator

I want to generate a Nx4 random matrix. In this matrix, each column is considered having different range and step. The random values should be only from these steps.
For e.g. 1st column 0:0.1:1
2nd column > 0:1:10
3rd column > 2:0.5:8
4th column > 0:-1:-10
I want to generate a random matrix of N=5. I should get a matrix with above conditions. Like this
[0 5 3.5 -5 ;
0.8 8 7 -3
0.2 0 2.5 -7
0.6 8 6.5 0
0.9 3 7.5 -9]
The N value could go to any size. Repeated values are permissible. I tried some random functions like randperm, randsample etc but I am not able to produce like this. Randperm is not allowing to produce repeated values.
How could I generate it ? Could you help with a code sample ?

Best Answer

Read about randsample, randperms. 
C1 =  0:0.1:1 ; 
C2 = 0:1:10 ; 
C3 = 2:0.5:8 ; 
C4 = 0:-1:-10 ;
N = 5 ; M = 4 ; 
C = zeros(N,M) ; 
C(:,1) = randsample(C1',5) ; 
C(:,2) = randsample(C2',5) ; 
C(:,3) = randsample(C3',5) ; 
C(:,4) = randsample(C4',5) ;
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