我的代码如下。在代码中,我只评估'fb2010'
文件中的数据。我想添加其他文件“'fb2020'
,'fb2030'
和'fb2040'
,并使用相同的代码评估其数据。我的问题是如何应用for
循环并包含其他数据文件。我试过,但我对for
循环感到困惑。
load('fb2010'); % loading the data
x = fb2010(3:1:1502,:);
% y_filt = filter(b,a,x); % filtering the received signal
y_filt= filter(b,a,x,[],2);
%%%%%%% fourier transform
nfft = length(y_filt);
res = fft(y_filt,nfft,2)/nfft;
res2 = res(:,1:nfft/2+1); %%%% taking single sided spectrum
res3 = fft(res2,[],2);
for i = 3:1:1500 %%%% dividing each row by first row.
resd(i,:) = res3(i,:)./res3(1,:);
end
答案 0 :(得分:0)
我假设您的文件是MAT文件,而不是ASCII。您可以load
返回struct
并使用dynamic field referencing来执行此操作:
n = 4;
for i = 1:n
vname = ['fb20' int2str(i) '0']; % Create file/variable name based on index
s = load(vname); % Load data as struct (overwriting previous s)
x = s.(vname)(3:1:1502,:); % Access struct with dynamic field reference
% Rest of your code
...
end
如果您使用的是纯ASCII文件,load
将不会生成结构。但是,此类文件要简单得多(请参阅load
/ save
的文档)。以下代码可能会起作用:
n = 4;
for i = 1:n
vname = ['fb20' int2str(i) '0']; % Create file/variable name based on index
s = load(vname); % Load data as matrix (overwriting previous s)
x = s(3:1:1502,:); % Directly index matrix
% Rest of your code
...
end
将文件扩展名添加到load
命令以使代码更具可读性是一个好主意。