figure195.m

时间序列分析中很用的源码,书的原名为时间序列分析的小波方法.

% figure195 - Calculate and plot MODWT expanded view of MRA of ocean shear to replicate Figure 195 of WMTSA.
% 
% Usage:
%   figure195
%

% $Id: figure195.m 569 2005-09-12 19:37:21Z ccornish $

% Load the data
[X, x_att] = wmtsa_data('msp');

% Compute MODWT coefficients
wtfname = 'la8';
J0 = 7;
boundary = 'reflection';

[WJt, VJt, w_att] = modwt(X, wtfname, J0, boundary);

% Compute inverse MODWT MRA reconstruction.
[DJt, SJt, mra_att] = imodwt_mra(WJt, VJt, w_att);

title_str = {};
title_str(1) = {['\bfFigure 195.\rm Expanded view of detail series']};
title_str(2) = {['MODWT multiresolution analysis of vertical ' ...
                 'shear measurements']};
title_str(3) = {['(in inverse seconds) versus depth (in meters).']};
title_str(4) = {['Wavelet: ' wtfname ',  NLevels: ', int2str(J0), ',  Boundary: ' ...
                 boundary]};

delta_z = 0.1;        % vertical sampling in meters
depth_offset = 350.0; % uppermost depth of profile
xaxis = (1:length(X)) * delta_z + depth_offset;

clear MRAplotAxesProp;
MRAplotAxesProp.XLim      = [300 1050];
MRAplotAxesProp.XTick     = [300:50:1050];
MRAplotAxesProp.XTickLabel  = [300:50:1050];

% Plot MRA coefficients

[hMRAplotAxes] = plot_imodwt_mra(DJt, [], [], mra_att, ...
           title_str, xaxis, 'depth (meters)', MRAplotAxesProp);

% Plot overlay of lines marking depths at 489.5 and 899.0 meters

x_489 = 489.5;
x_899 = 899.0;

lineProp.Color = 'green';
lineProp.LineWidth = .35;


% Plot overlay on MRA plot.
ylim = get(hMRAplotAxes, 'YLim');
y1 = ylim(1);
y2 = ylim(2);
set(get(hMRAplotAxes, 'Parent'), 'CurrentAxes', hMRAplotAxes);

linesegment_plot(x_489, y1, x_489, y2, lineProp);
linesegment_plot(x_899, y1, x_899, y2, lineProp);

figure_datestamp(mfilename, gcf);