IDL Wavelet Toolkit User's Guide

Chapter 4: IDL Wavelet Toolkit Reference 71Tag Type DefinitionCOEFFICIENTS LONG Number of coefficients retainedPERCENT DOUBLE Percent of coefficients retainedTable 4-4: The Structure Tags for DENOISE_STATE (Continued)NoteIf the DOUBLE keyword is set, then the arrays will be of type double.Upon input, if DENOISE_STATE is set to a structure with the above form, thenDWT, WPS, SORTED, and CUMULATIVE will not be recomputed byWV_DENOISE. This is useful if you want to make multiple calls to WV_DENOISEusing the same Array.WarningNo error checking is made on the input values. The values should not be modifiedbetween calls to DENOISE_STATE.DOUBLESet this keyword to force the computation to be done using double-precisionarithmetic.DWT_FILTEREDSet this keyword to a named variable in which the filtered discrete wavelet transformwill be returned.PERCENTSet this keyword to a scalar specifying the percentage of cumulative power to retain.NoteIf neither COEFFICIENTS nor PERCENT is present then all of the coefficients areretained (i.e. no filtering is done).IDL Wavelet ToolkitWV_DENOISE