【发布时间】:2016-12-06 08:58:47
【问题描述】:
这是一个非常复杂的数据结构问题,我会尽量简单地解释一下
我在一个数组signals 中有多个信号,其中的每个元素都是一个结构,其中包含多个信号段及其属性。
现在我有另一个函数可以过滤这个信号并根据截止频率进行一些计算。
每当调用此函数时,我都想遍历所有fc,并遍历所有信号和所有段。但问题是fc 只在信号中计算,所以我有这样的东西:
classdef datHandle < handle
properties
error_norm = {};
final_error = {};
signals = {};
end
methods
function this = addsignal(this, varargin)
%signal segmentation is done here
end
function this = addfilter(this, varargin)
for i = 1:length(this.signals)% for each signal
this.error_norm = {};
fn = 1/((mean(diff(this.signals{i}(1).time)))*2);
fc = linspace(1,fn,(fn/0.5)); %calculate fc
this.tempaddfilt(fc,i)
end
this.final_error = [this.final_error;this.error_norm];
end
function this = tempaddfilt(this,varargin)
s = [];
f = ltiFilter.PT1(); % initiate filter class
fc = varargin{1}; % take fc
i = varargin{2}; % the exact signal
for a = 1:length(fc) % fc
q = 0;
w = 0;
for k = 1:length(this.segments{i}) % segment of ith signal
f.fc = fc(a);
filt_sig = f.eval(this.segments{i}(k).signal,this.segments{i}(k).signal(1)); %signal and the initial value of the signal
filt_sig = filt_sig';
s(1,i).main(k).seg_err(a) = std((filt_sig-this.segments{i}(k).ref)); % calculate the standard diviation of the signal
q = q+s(1,i).main(k).seg_err(a);
s(1,i).main(k).fc(a) = fc(a);
end
s(1,i).main(i).sig_err(a) = q;
w = w+s(1,i).main(i).sig_err(a);
end
s(1,1).main(1).filt_err(a) = w;
this.error_norm = [this.error_norm s];
end
end
end
测试脚本:
clear all
close all
filname = load('file');
signal1 = filname.signal; % current value
time1 = filname.time;
signal2 = filname.signal2; % current value
time2 = filname.time2;
f = ltiFilter.datHandle();
f.addsignal(signal1,time1,93);
f.addfilter()
我计划final_norm 是这样的:
但是当我添加第二个信号时,我的算法不起作用。如果有人有更好的算法,欢迎提出任何建议。
【问题讨论】:
标签: matlab data-structures struct