Editing Discretization error (section)

{{Short description|Error from taking a finite number of steps in a computation to approximate an infinite process}}
{{refimprove|date=December 2009}}
In [[numerical analysis]], [[computational physics]], and [[simulation]], '''discretization error'''  is the [[error]] resulting from the fact that a [[function (mathematics)|function]] of a [[continuum (set theory)|continuous]] variable is represented in the computer by a finite number of evaluations, for example, on a [[lattice model (physics)|lattice]].  Discretization error can usually be reduced by using a more finely spaced lattice, with an increased [[Computational complexity theory|computational cost]].