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Accepted Answer This is because MATLAB's random number generator is initialized to the same state each time MATLAB starts up. If you wish to generate different random values in each MATLAB session, you can use the system clock to initialize the random number generator once at the beginning of each MATLAB session.
In the C programming language, the rand() function is a library function that generates the random number in the range [0, RAND_MAX]. When we use the rand() function in a program, we need to implement the stdlib. h header file because rand() function is defined in the stdlib header file.
The rand() function generates a pseudo-random integer in the range 0 to RAND_MAX . Use the srand() function before calling rand() to set a seed for the random number generator. If you do not make a call to srand(), the default seed is 1.
Explanation : rand() will generate random number from 0 to RAND_MAX, it's modulus with 100 ensures that our result must be between 0 and 99 inclusive.
There are only 3% of numbers between 1 and 230 which are NOT between 225 and 230. So, this sounds pretty normal :)
Because 225 / 230 = 2-5 = 1/32 = 0.03125 = 3.125%
The lighter green is the region between 0 and 225; the darker green is the region between 225 and 230. The ticks are powers of 2.
You need to be more precise: you want different base 2 logarithm values but what distribution do you want for this? The standard rand() functions generate a uniform distribution, you will need to transform this output using the quantile function associated with the distribution that you want.
If you tell us the distribution then we can tell you the quantile function you need.
If you want different orders of magnitude, why not simply try pow(2, rand())? Or perhaps choose the order directly as rand(), as Harold suggested?
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