我在经历多个循环时遇到上述错误。我真的不知道如何解释这个问题,但我会尽我所能
代码:
function this = tempaddfilt(this,varargin)
fc = linspace(1,200,(200/0.5));
main = struct('seg_err',{},'sig_err',{},'filt_err',{},'fc',{});
for a = 1:length(fc) % fc
q = 0;
w = 0
for i = 1:length(this.segments) % total number signal
for k = 1:length(this.segments{i}) % total number of segments
filt_sig = eval(this.segments{i}(k).signal,this.segments{i}(k).signal(1)); % apply filter to the ith singal and kth segemnt
filt_sig = filt_sig';
main{i}(k).seg_err(a) = std(filt_sig-this.segments{i}(k).ref); % calculate the standard divitation of the filtered signal and previously calculated signal.
q = q+main{i}(k).seg_err(a); add all the error of the segments for the same FC
end
main{i}(1).sig_err(a) = q; % assign the sum of all error of the all segemnts of the same signal
w = w+main{i}(1).sig_err(a); % add all the error of the signals
end
main.filt_err = w; % assign the sum of all error of the all signals
end
this.error_norm = [this.error_norm ;main];
end
end
基本上我有3个循环,第一个循环用于fc,第二个循环用于信号,第三个循环用于信号的segemnts。当fc = 1时程序正常工作。
但是当fc为2时,我收到以下错误:
Cell contents assignment to a non-cell array object.
在该行:
main{i}(k).seg_err(a) = std(filt_sig-this.segments{i}(k).ref);
即i =1
,k=1
,a = 2
答案 0 :(得分:1)
问题似乎在于您希望如何动态访问主结构的成员。您使用
将main声明为structmain = struct('seg_err',{},'sig_err',{},'filt_err',{},'fc',{});
但是使用大括号{}无法访问结构成员。这是与先前关于struct数组的动态索引的讨论的reference。所以,基本上,问题是“main {i}”,这不是动态索引结构成员的有效方法。
试试以下内容。 将结构声明更改为explanation
main = struct('seg_err',[],'sig_err',[],'filt_err',[],'fc',[]);
然后,通过
提取字段名称FieldNames = fieldnames(main);
然后,您可以像
中一样引用结构成员for
loopIndex = 1:numel(FieldNames)
main.(FieldNames{loopIndex})(1).seg_err(1) = 1;
end