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WV_FN_HAAR

WV_FN_HAAR

The WV_FN_HAAR function constructs wavelet coefficients for the Haar wavelet function.

Note: The Haar wavelet is the same as the Daubechies wavelet of order 1.

Syntax


Result = WV_FN_HAAR( [Order, Scaling, Wavelet, Ioff, Joff] )

Return Value


The returned value of this function is an anonymous structure of information about the particular wavelet.

Tag

Type

Definition

FAMILY

STRING

‘Haar’

ORDER_NAME

STRING

‘Order’

ORDER_RANGE

INTARR(3)

[1, 1, 1] Valid order range [first, last, default]

ORDER

INT

1

DISCRETE

INT

1 [0=continuous, 1=discrete]

ORTHOGONAL

INT

1 [0=nonorthogonal, 1=orthogonal]

SYMMETRIC

INT

0 [0=asymmetric, 1=symm., 2=near symm.]

SUPPORT

INT

1 [Compact support width]

MOMENTS

INT

1 [Number of vanishing moments]

REGULARITY

DOUBLE

0d [Number of continuous derivatives]

Arguments


Order

A scalar that specifies the order number for the wavelet. The default is 1.

Scaling

On output, contains a vector of double-precision scaling (father) coefficients.

Wavelet

On output, contains a vector of double-precision wavelet (mother) coefficients.

Ioff

On output, contains an integer that specifies the support offset for Scaling.

Joff

On output, contains an integer that specifies the support offset for Wavelet.

Note: If none of the above arguments are present then the function will simply return the Result structure using the default Order.

Keywords


None.

Version History


5.3

Introduced

Resources and References


Daubechies, I., 1992: Ten Lectures on Wavelets, SIAM.

See Also


WV_DWT, WV_FN_COIFLET, WV_FN_DAUBECHIES, WV_FN_SYMLET



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