How to convert zero to 'Nan' for multiple dot mat file containing 1d data
조회 수: 1 (최근 30일)
이전 댓글 표시
I have several dot mat files, each files contains 1d array data, some of the data has zero value, and I want to convert zero values to ‘Nan’ for each dot mat files using for loop. I did for a single file using the following commands and it successfully converted zeros to Nan.
>> clear
>> load('NormFHR1.mat')
>> A=x;
>> A(A ==0) = NaN;
>> save('MRN1','A')
However performing for each file one by one like this is a kind of tiresome since I have thousands of files. Please forward any trick to solve this problem.
Thanks for your Help
댓글 수: 0
채택된 답변
Matt J
2021년 5월 25일
편집: Matt J
2021년 5월 25일
fnames=ls('NormFHR*.mat');
for i=1:size(fnames,1)
fn=fnames(i,:);
s=load(fn);
A=s.x;
A(~A)=nan;
save( strrep(fn,'NormFHR','MRN'), 'A')
end
댓글 수: 4
Jan
2021년 5월 25일
@Matt J: Look into the source code of ls() . It calls dir() also and convertes the field "name" to a char. The output is padded, such that all lines have the same number of columns. Onbatining the lines later forward the padded char vectors as input to load. Therefore ls is löess efficient than using the unpadded char vectors directly:
fileList = dir('NormFHR*.mat');
for k = 1:numel(fileList)
fn = fileList(k).name;
...
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 Multirate Signal Processing에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!