数学

• d3.random.normal - generate a random number with a normal distribution.
• d3.random.logNormal - generate a random number with a log-normal distribution.
• d3.random.bates - generate a random number with a Bates distribution.
• d3.random.irwinHall - generate a random number with an Irwin–Hall distribution.
• d3.transform - compute the standard form of a 2D matrix transform.