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Reference for Processing (BETA) version 0135+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.

Name

### random()

Examples

    for(int i=0; i<100; i++) {
      float r = random(50);
      stroke(r*5);
      line(50, i, 50+r, i);
    }

    for(int i=0; i<100; i++) {
      float r = random(-50, 50);
      stroke(abs(r*5));
      line(50, i, 50+r, i);
    }

Description

Generates random numbers. Each time the random() function is called, it returns an unexpected value within the specified range. If one parameter is passed to the function it will return a float between zero and the value of the high parameter. The function call random(5) returns values between 0 and 5. If two parameters are passed, it will return a float with a value between the the parameters. The function call random(-5, 10.2) returns values between -5 and 10.2. To convert a floating-point random number to an integer, use the int() function.

Syntax

    random(high);
    random(low, high);

Parameters

high | int or float
low | int or float

Usage | Web & Application
Related | randomSeed() noise()

Updated on March 26, 2008 10:43:13pm PDT