SHOWWP -- shows wavelet packet coefficients and many other things showwp(w, h, g) showwp(w, f, h, g) Displays the tree of the wavelet packet coefficients in w. f is the original vector (possibly an empty vector). If any selections are made, the selected packets are made to stand out. Both f and selection are optional. The display is divided into two parts: in the top part is the tree of the wavelet packet coefficients, the bottom part is used for graphing other things. The original vector is the very first row of the tree. Here white means large values, black small (possibly) negative values. The wavelet packet coefficients form the rest of tree. The left branches are the result of convolution-decimation with the low pass filter (scaling function), right branches with the high pass filter (wavelet). Here only the absolute values of the coefficients are drawn: white means large absolute value, black means zero. Clicking in a box on the first row shows the original vector, clicking in any other box shows the graph of the wavelet packet corresponding to that box. Select menu: Packet toggle the selected/unselected state of a single packet Group toggle the selected/unselected state of a box Fixed level click anywhere in the tree to select a level Wavelet basis selects the wavelet basis Best level selects the level with lowest cost Best basis selects the basis with lowest cost Clear clears all selections Action menu: Inverse transform computes the inverse transform using current selection Phaseplane plot displays the phaseplane plot for the currently selected basis Nonincreasing rearrengement displays the nonincreasing rearrengement of the wavelet packet coefficients Compute cost displays the cost of various things Discard menu: Discards all coefficients whose absolute value is less than the selected percentage of the L2-norm of the whole collection of wavelet packet coefficients. Options menu: Set cost function allows to select the cost function Show cost function shows which cost function is being used Natural order switches the display to natural order Sequency order switches the display to sequency order --> Color switches the display to color --> B/W switches the display to black and white See also PHASEPLN, WMENU, WPDEMO, WPA1, WPS1, BESTBASE, BESTLEVL, FIXLEVEL, WAVBASIS.