IDL Wavelet Toolkit User's Guide
IDL Wavelet Toolkit User's Guide
IDL Wavelet Toolkit User's Guide
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Chapter 4: <strong>IDL</strong> <strong>Wavelet</strong> <strong>Toolkit</strong> Reference 85WV_FN_HAARThe WV_FN_HAAR function constructs wavelet coefficients for the Haar waveletfunction.NoteThe Haar wavelet is the same as the Daubechies wavelet of order 1.SyntaxResult = WV_FN_HAAR( [Order, Scaling, <strong>Wavelet</strong>, Ioff, Joff] )Return ValueThe returned value of this function is an anonymous structure of information aboutthe particular wavelet.Tag Type DefinitionFAMILY STRING ‘Haar’ORDER_NAME STRING ‘Order’ORDER_RANGE INTARR(3) [1, 1, 1] Valid order range [first, last, default]ORDER INT 1DISCRETE 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]Table 4-9: Structure Tags for Result<strong>IDL</strong> <strong>Wavelet</strong> <strong>Toolkit</strong>WV_FN_HAAR
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