load multiple .mat file and do same calculation on each file

2017 5 6
2 个回答
回答已采纳
更新时间：2019 9 29
4 次查看（30 天）

0 个投票

i have 100 .mat file name "A00001-A00100". i want to create loop that do calculation (written in code) one by one on each file but my code just do calculation on first file (A00001.mat) only. please help!,
% loop to do same calculation on each file,
for i=1:100
load(['A000' num2str(i,'%02d') '.mat' ]);
%calculations
N=9000;
gqrs('A00001',N);
ann=rdann('A00001','qrs',[],N);
[tm,sig]=rdsamp('A00001',[],N);
end

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 采纳的回答

mizuki
mizuki 2017-5-6

0 个投票

Your code works only for A00001 because you set 'A00001' as input arguments for GQRS, RDANN, RDSAMP. Change the numbers with index i.
for i=1:5
str = 'A000' num2str(i,'%02d');
filename = [str, '.mat']
load(str);
% calculations
N = 9000;
gqrs(str, N);
ann = rdann(str, 'qrs', [], N);
[tm,sig] = rdsamp(str, [], N);
end
Also, if you breakdown the problem, you can easily find which part you need to change.
  1. Made the maximum loop index smaller from 100 to 5.
  2. To check the mat-file was loaded correctly, created the variable, filename.
  3. Since the first loading part worked correctly, checked the second part.

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MM Asim
MM Asim 2017-5-8
Yes it work, code that you have provide work absolutely great after little modification in second line and also your recommendations to solve the problem are helpful for me.
str = ['A000' num2str(i,'%02d')]; % 2rd line with some change.
thanks a lot Mr. Mizuki

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更多回答（1 个）

Navdeep Goel
Navdeep Goel 2019-9-29

0 个投票

for i=1:5
str = 'A000' num2str(i,'%02d');
filename = [str, '.mat']
load(str);
% calculations
N = 9000;
gqrs(str, N);
ann = rdann(str, 'qrs', [], N);
[tm,sig] = rdsamp(str, [], N);
end
In the above code, load(str) should be load(filename)

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