Matlab Everything

Basic Remarks

• Design philosophy:
  1. Designed around arrays
  2. Designed around double-precision complex numbers
  3. Object-oriented design
• All numeric values are double by default
  • This includes the “integers” produced by various rounding methods
• The empty array [] is also of class double
• Array indices start from ++1++
• The default rounding mode is rounding half up away from 0
  • This is also the rounding mode used by round
• Any operation in MATLAB that returns a value will print to the Command Window by default; use a semicolon ; to suppress output, especially in scripts
  • ; also lets you place multiple statements on a single line
  • For example, a = 1; b = 2; a + b returns ans = 3
• Control-flow blocks are terminated with the keyword end
• Two function-call syntaxes: Matlab Command-Function Duality

Function Inputs

MATLAB’s rules for function inputs are unusual — many rules, even more exceptions.

• For binary operations, input arrays must satisfy Matlab Compatible Array Sizes
• Functions designed for matrices typically also work on N-D arrays, usually operating on the plane spanned by the first two dimensions
• Functions that accept numeric arguments often also accept character arguments

Basic Syntax

• The square brackets [] that delimit an array generally cannot be omitted; they may only be dropped when generating a vector with the colon operator :