# wavefun2

Wavelet and scaling functions 2-D

## Syntax

## Description

`[`

returns an approximation `s`

,`w1,w2,w3`

,`xyval`

] = wavefun2(`wname`

,`iter`

)`s`

of the 2-D scaling function and
approximations `w1`

, `w2`

, and
`w3`

of the three 2-D wavelet functions associated with the
orthogonal wavelet `wname`

. `xyval`

is a 2-D
grid of points. The positive integer `iter`

specifies the number
of iterations.

The approximations are the tensor products of the one-dimensional scaling and
wavelet functions associated with the orthogonal wavelet `wname`

.
For more information, see Algorithms.

## Examples

## Input Arguments

## Output Arguments

## Algorithms

The `wavefun2`

function returns approximations of the 2-D scaling
function and the three 2-D wavelet functions resulting from the tensor products of the
one-dimensional scaling and wavelet functions associated with the orthogonal wavelet
`wname`

.

If ```
[phi,psi,xval] =
wavefun(
```

, then:`wname`

,`iter`

)

For more information, see `wavefun`

.

## References

[1] Daubechies, I. *Ten
Lectures on Wavelets*. CBMS-NSF Regional Conference Series in Applied
Mathematics. Philadelphia, PA: Society for Industrial and Applied Mathematics,
1992.

[2] Strang, G., and T. Nguyen.
*Wavelets and Filter Banks*. Wellesley, MA: Wellesley-Cambridge
Press, 1996.

## Version History

**Introduced before R2006a**