i wan to generate the random number between two number with condition

Question

Sun Heat 2020-6-21

0
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https://ww2.mathworks.cn/matlabcentral/answers/552172-i-wan-to-generate-the-random-number-between-two-number-with-condition

编辑： Rik 2020-6-21

i have this kind of code:-

mini=[2 0.2]; maxi=[20 10]; x=zeros(50,2);
for i= 1:var
x(:,i)=mini(i)+(maxi(i)-mini(i))*rand(50,1);
end

i want to generate the number which is 40% less than the number in the 1st coloum for example.

2-0.8,3-1.2,4-1.6,5-2,6-2.4,10-4,11-4.4,15-6,20-7.

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Answer 1

Thiago Henrique Gomes Lobato 2020-6-21

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https://ww2.mathworks.cn/matlabcentral/answers/552172-i-wan-to-generate-the-random-number-between-two-number-with-condition#answer_454939

编辑：Thiago Henrique Gomes Lobato 2020-6-21

在 MATLAB Online 中打开

If your second column has values equal to 40% of the first, then they are not random. You can vectorize this in the following form:

VectorSize = 5;
mini=[2]; maxi=[20 ]; x=zeros(VectorSize,1);
x=mini+(maxi-mini)*rand(VectorSize,1);
% Generate extra columns
NofExtraCollums = 1;
x = x.*(0.4.^([0:NofExtraCollums]))
x(:,2)./x(:,1)
x =
   18.4878    7.3951
    2.0207    0.8083
   10.3241    4.1296
    9.6383    3.8553
   10.2965    4.1186
ans =
    0.4000
    0.4000
    0.4000
    0.4000
    0.4000