MATLAB: How to recieve only the negative or the positive of an integer

integerloopnegativepositiverandomsame integer

I want to get only the negative or positive of a specific integer but randomly each time. For example inside a for loop i want to recieve the number -3 or +3 each time it loops.

Best Answer

One way is,

 your_integer = 3;
 number = randsample([-1 1],1)*your_integer

Related Solutions

MATLAB: Random seed has to be an integer

No, the internal states are integers.

MATLAB: How can i do the scaling with negative integer.. i have done this with the positive integer

To have negative steps with the colon operator, you need to make sure your first element is larger than your third element. Try out the following lines one by one to see the differences.

1:0.5:3
1:-0.5:3
3:-0.5:1
3:0.5:1

It might be easiest to create your vector with a positive scale and reverse it if your scale is negative:

t=0:abs(a):10;
if a<0, t=t(end:-1:1);end

Note that this can be different from 10:a:0 if 10 is not a multiple of a.

You could also use a conditional in the first place:

if a>=0
    t=0:a:10;
else
    t=10:a:0;
end

Best Answer

Related Solutions

MATLAB: Random seed has to be an integer

MATLAB: How can i do the scaling with negative integer.. i have done this with the positive integer

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