Constants for Wavelet Functions and Modules
IMLPlus provides predefined constants to make your wavelet programs easier to write and understand. These constants must be used in place of the SAS macro variables used with the PROC IML wavelet
functions and modules. For example, whereas in PROC IML you would write
call MRAApprox( decomp, &SureShrink, 4, , );
in IMLPlus you must write
call MRAApprox( decomp, WAV_SURESHRINK, 4, , );
You must not use the %WAVINIT macro in an IMLPlus program because IMLPlus does not require or support it.
For an explanation of the function performed by each constant, please refer to the chapter Wavelet Analysis in the SAS/IML User's Guide.
Wavelet Specification Options
| WAV_BOUNDARY |
1 |
| WAV_DEGREE |
2 |
| WAV_FAMILY |
3 |
| WAV_MEMBER |
4 |
Wavelet Specification Option: Boundary Treatment Names
| WAV_ZEROEXTENSION |
0 |
| WAV_PERIODIC |
1 |
| WAV_POLYNOMIAL |
2 |
| WAV_REFLECTION |
3 |
| WAV_ANTISYMMETRICREFLECTION |
4 |
Wavelet Specification Option: Degree Names
| WAV_CONSTANT |
0 |
| WAV_LINEAR |
1 |
| WAV_QUADRATIC |
2 |
Wavelet Specification Option: Wavelet Family Names
| WAV_DAUBECHIES |
1 |
| WAV_SYMMLET |
2 |
Threshold Specification Options
| WAV_POLICY |
1 |
| WAV_METHOD |
2 |
| WAV_VALUE |
3 |
| WAV_LEVELS |
4 |
Threshold Specification Option: Policy
| WAV_NONE |
0 |
| WAV_HARD |
1 |
| WAV_SOFT |
2 |
| WAV_GARROTE |
3 |
Threshold Specification Option: Method
| WAV_ABSOLUTE |
0 |
| WAV_MINIMAX |
1 |
| WAV_UNIVERSAL |
2 |
| WAV_SURE |
3 |
| WAV_SUREHYBRID |
4 |
| WAV_NHOODCOEFFS |
5 |
Threshold Specification Option: Levels
wavget Option
| WAV_NUMPOINTS |
1 |
| WAV_DETAILCOEFFS |
2 |
| WAV_SCALINGCOEFFS |
3 |
| WAV_THRESHOLDINGSTATUS |
4 |
| WAV_SPECIFICATION |
5 |
| WAV_TOPLEVEL |
6 |
| WAV_STARTLEVEL |
7 |
| WAV_FATHERWAVELET |
8 |
wavprint Option
| WAV_SUMMARY |
1 |
| WAV_DETAILCOEFFS |
2 |
| WAV_SCALINGCOEFFS |
3 |
| WAV_THRESHOLDEDDETAILCOEFFS |
4 |
Predefined Wavelet Specifications
| WAV_WAVESPEC |
{ ., ., ., . } |
| WAV_HAAR |
{ WAV_PERIODIC, ., WAV_DAUBECHIES, 1 } |
| WAV_DAUBECHIES3 |
{ WAV_PERIODIC, ., WAV_DAUBECHIES, 3 } |
| WAV_DAUBECHIES5 |
{ WAV_PERIODIC, ., WAV_DAUBECHIES, 5 } |
| WAV_SYMMLET5 |
{ WAV_PERIODIC, ., WAV_SYMMLET, 5 } |
| WAV_SYMMLET8 |
{ WAV_PERIODIC, ., WAV_SYMMLET, 8 } |
Predefined Thresholding Specifications
| WAV_THRESHSPEC |
{ ., ., ., . } |
| WAV_RISKSHRINK |
{ WAV_HARD, WAV_MINIMAX, ., WAV_ALL } |
| WAV_VISUSHRINK |
{ WAV_SOFT, WAV_UNIVERSAL, ., WAV_ALL } |
| WAV_SURESHRINK |
{ WAV_SOFT, WAV_SUREHYBRID, ., WAV_ALL } |