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%(第一步加载原始数据并绘图)m文件保存代码;而mat文件保存工作区里面已经加载或计算好的数据 %当前文件夹显示的路径一定要是保存数据和保存代码的文件夹 %“relt”是包含分解结果的矩阵,第一列是原始输入(“gsta(:,2)”),最后一列是趋势。 中间是IMF频率从高到低。 %应该注意的是,由于在eemd.m中,IMF的总数m被指定为log2(N)-1,在某些情况解的线条进行了合并 %因此会比实际分解得到的减少,但在计算周期和表现显著性的时候要将每个模态的周期和显著性计算在内。
EEMD程序.zip
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NCU2009 folder ---40 m files ==============total-list==================================== 2009/10/08 AM 01:34 4,316 blocknormalize.m 2009/10/08 PM 04:07 5,770 confidenceLine.m 2009/10/08 PM 04:07 2,115 dist_value.m 2009/10/08 PM 03:59 5,276 eemd.m 2009/10/08 PM 03:37 853 emax.m 2009/10/08 PM 03:36 867 emin.m 2009/10/08 PM 04:52 9,997 endprocess1.m 2009/10/13 PM 09:40 5,152 ex02d.m 2009/10/08 PM 03:59 4,361 extrema.m 2009/10/27 AM 04:03 7,935 fa.m 2009/10/08 AM 01:39 3,356 FAacos.m 2009/10/21 PM 04:40 3,013 FAcosfor.m 2009/10/08 AM 01:42 1,528 FAhilbert.m 2009/10/27 AM 04:11 1,603 FAimphilbert.m 2009/10/08 AM 01:42 7,896 FAquadrature.m 2009/10/08 AM 01:38 6,695 FAzc.m 2009/10/08 PM 03:46 3,103 findcriticalpoints.m 2009/10/08 PM 04:41 6,536 findEE.m 2009/10/12 AM 01:41 11,957 findEEfsp.m 2009/10/11 PM 12:08 13,153 fspecial.m 2009/10/12 AM 12:01 3,794 FSPHSP.m 2009/10/11 PM 04:47 2,207 hilbert.m 2009/10/08 AM 01:37 1,683 hilbertnormalize.m 2009/10/27 AM 04:06 18,846 hilbtm.m 2009/10/08 PM 03:58 3,502 ifndq.m 2009/10/08 AM 01:36 3,610 linearnormalize.m 2009/10/09 AM 12:36 2,614 local_max.m 2009/10/08 PM 04:52 515 medianfilter.m 2009/10/27 AM 04:48 8,575 nnspa.m 2009/10/27 AM 04:39 8,085 nnspe.m 2009/10/09 AM 12:20 7,539 nspplota.m 2009/10/09 AM 12:18 7,520 nspplote.m 2009/10/08 AM 01:35 3,651 pchipnormalize.m 2009/10/11 PM 04:16 664 ratio1.m 2009/10/11 PM 04:16 914 ratioa.m 2009/10/08 PM 04:06 2,420 significanceIMF.m 2009/10/08 PM 04:07 2,730 signiplotIMF.m 2009/10/08 PM 03:50 1,525 skiphilbt_m.m 2009/10/08 AM 01:35 3,645 splinenormalize.m 2009/10/08 AM 01:34 4,204 splinenormalizeep.m =============================================================== Ver 1.0 ,Release from NCU RCADA Director:Norden E. ,Huang code and footnote:Sheng-Chung ,Su This version of HHT matlab code is for Education Purpose DATE:2009/10/27 What's new with NCU2009? 1.M files with complex structures are equipped with footnotes. 2.Cosine-formula method is in volved in fa.m 3.Testrun examples are prepared in "NCU2009-Run" folder 4.M-files for "Significance for IMFs" are ready. 5.M-files for "Excessive Extrema" are ready. 6.A set of "Run matlab code and Learn HHT" examples are ready: ==============Frequently asked question========================= 6.1. compare the difference of HHT and FFT Q.01-how to show the difference -------ex01.m ==============basic HHT calculation============================= 6.2.Do EEMD Q.02-how to run eemd-------------------ex02.m Q.03-how to run emd--------------------ex02.m 6.3.Plot Hilbert Spectrum how to plot Hilbert-Energy spectrum----ex02.m how to plot Hilbert-Energy spectrum----ex02.m ==============detail IMF Properties calculation================= 6.4.Significance of IMF how to Show the significance of IMF----ex05.m 6.5.I.F.(Instantaneous Frequency) of IMF how to Show the I.F. values of IMF-----ex03.m 6.6.E.E(Excessive Extrema) value of IMF how to Show the E.E. values of IMF-----ex04.m 7.Detail test for "Hilbert-Transform calculation" m-file are ready: ==============detail Hilbert-Transform calculation============== 7.1 Improved Hilbert--Lena how to Show the difference of Hilbert and Improved Hilbert -----testfile 7.2.calculate f(t),a(t) by fa.m--Lena How to Run Hilbert by my favorite method-----fa.m --------------019 7.2.1 Calculationfa for Instantaneous Frequency How to do IF by acos method -----------------------------------020 How to do IF by cosine formula method -------------------------021 How to do IF by matlab Hilbert method -------------------------022 How to do IF Improved Hilbert method---------------------------023 How to do IF Quadrature method---------------------------------024 How to do IF by Zero-Crossing method---------------------------025 7.2.2 functions called by fa for Normalization How to do normalize by Block-normalize method------------------026 How to do normalize by Hilbert method--------------------------027 How to do normalize by Linear-normalize method-----------------028 How to do normalize by Hermite-Spline-normalize method---------029 How to do normalize by Spline-normalize method-----------------030 How to do normalize by Spline-normalize (with favorite end-process) method--031 8.Detail test for the others important m-file are ready: ==============Frequently asked question========================= 8.1. HSP and FSP Comparison--Huang FSPHSP.m----------------------------------001 ==============basic HHT calculation============================= 8.2.Do EEMD--Wu eemd.m------------------------------------002 extrema.m---------------------------------003 8.3.Plot Hilbert Spectrum-lena nnspa.m-----------------------------------004 nnspe.m-----------------------------------005 nspplota.m--------------------------------006 nspplote.m--------------------------------007 ==============detail IMF Properties calculation================= 8.4.Significance of IMF --Wu confidenceLine.m--------------------------008 dist_value.m------------------------------009 significanceIMF.m-------------------------010 signiplotIMF.m----------------------------011 8.5.I.F.(Instantaneous Frequency) of IMF --Wu ifndq.m-----------------------------------012 8.6.E.E(Excessive Extrema) value of IMF--Huang findEE.m----------------------------------013 findEEfsp.m-------------------------------014 ratio1.m----------------------------------015 ratioa.m----------------------------------016 ==============detail Hilbert-Transform calculation============== 8.7. Improved Hilbert--Lena hilbtm.m----------------------------------017 skiphilbt_m.m-----------------------------018 8.8.calculate f(t),a(t) by fa.m--Lena fa.m--------------------------------------019 8.8.1 functions called by fa for Instantaneous Frequency FAacos.m---------------------------------020 FAcosfor.m-------------------------------021 FAhilbert.m------------------------------022 FAimphilbert.m---------------------------023 FAquadrature.m---------------------------024 FAzc.m-----------------------------------025 8.8.2 functions called by fa for Normalization blocknormalize.m-------------------------026 hilbertnormalize.m-----------------------027 linearnormalize.m------------------------028 pchipnormalize.m-------------------------029 splinenormalize.m------------------------030 splinenormalizeep.m----------------------031 8.8.3 other functions called by fa emax.m-----------------------------------032 emin.m-----------------------------------033 endprocess1.m----------------------------034 findcriticalpoints.m---------------------035 local_max.m------------------------------036 medianfilter.m---------------------------037
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