expNoise

expNoise (b)

The expNoise function returns a pseudo-random value from an exponential distribution whose average and standard deviation are b and the probability distribution function is

$$\displaystyle f(x)=\frac{1}{b} \exp \left(-\frac{x}{b}\right) .$$

The random number generator initializes using the system clock when Igor Pro starts. This almost guarantees that you will never repeat a sequence. For repeatable "random" numbers, use SetRandomSeed. The algorithm uses the Mersenne Twister random number generator.

See Also

SetRandomSeed, Noise Functions, Statistical Analysis