MATLAB: Generating random numbers from a certain interval

random number generator

Hi, I generated random numbers within the range 0.0 to 0.01 by this code x= 0.0 + (0.01-0.0).*rand() ,but some of generated random numbers x have unwanted value like "1.1902e-004". How can I solve and skip this value to obtain normal values?

Thanks in advance,

Best Answer

area - 1.1902e-004 is an alternative format to writing 0.00011902 which is a valid number within your interval. Try calling

 format long g

before running your code (to generate the random numbers) and you should see how the effect of this format.

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MATLAB: Random number within a decimal range

Hi Akif,

This is exactly a copy paste from MATLAB's help, so for further info type

doc rand

Your solution

r = a + (b-a).*rand(100,1);

Be aware, rand is generates evenly distributed random randi is the same but integer, But randn generates normally distributed random (gaussian distribution)

Good Luck!

MATLAB: Summation of diffrent lengths in vector

I would do this with some logical indexing magic.

a=[0.0 0.0 0.3 0.4 0.5 0.0 0.0 0.0 0.0 1.0 1.1];
step = 0.1;
tmp = a>0; % rule what elements to take
i_sum = tmp(1:end-1) & tmp(2:end)>0; % magic removes 1 element from each group
distances = sum((i_sum))* step % = 0.3

Best Answer

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MATLAB: Random number within a decimal range

MATLAB: Summation of diffrent lengths in vector

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