LexicographicalView< RandomAccessIterator > Class Template Reference

### A free/open-source library for quantitative finance

Public Types | Public Member Functions
LexicographicalView< RandomAccessIterator > Class Template Reference

Lexicographical 2-D view of a contiguous set of data. More...

`#include <ql/math/lexicographicalview.hpp>`

List of all members.

## Public Types
typedef RandomAccessIterator | x_iterator
| iterates over with fixed.
typedef boost::reverse_iterator < RandomAccessIterator > | reverse_x_iterator
| iterates backwards over with fixed.
typedef step_iterator < RandomAccessIterator > | y_iterator
| iterates over with fixed.
typedef boost::reverse_iterator < y_iterator > | reverse_y_iterator
| iterates backwards over with fixed.
## Public Member Functions
| LexicographicalView (const RandomAccessIterator &begin, const RandomAccessIterator &end, Size xSize)
| attaches the view with the given dimension to a sequence
Element access
y_iterator | operator[] (Size i)
Iterator access
x_iterator | xbegin (Size j)
x_iterator | xend (Size j)
reverse_x_iterator | rxbegin (Size j)
reverse_x_iterator | rxend (Size j)
y_iterator | ybegin (Size i)
y_iterator | yend (Size i)
reverse_y_iterator | rybegin (Size i)
reverse_y_iterator | ryend (Size i)
Inspectors
Size | xSize () const
| dimension of the array along x
Size | ySize () const
| dimension of the array along y

## Detailed Description

### template<class RandomAccessIterator>
class QuantLib::LexicographicalView< RandomAccessIterator >

Lexicographical 2-D view of a contiguous set of data.

This view can be used to easily store a discretized 2-D function in an array to be used in a finite differences calculation.