Extraction of struct dataset
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Hello there,
I'm trying to perfrom FLIR post-processing on IR datasets. I've generated the IR data in .mat format and imported it into MATLAB. MATLAB reads the IR file as 1x1 struct which is having 2879 fields. Now, I want to extract the number of frames on which I need to perform the post-processing but I cannot to extract the file altogether. I tried the following command:
DATA1=horzcat(DATA.Frame21);
But the problem with this is that it only extract single frame. Is there a way to extract 2879 frames altogether? I tried performing for loop but it's not working. Can you please suggest a way to extract the number of frames from struct file?
Thanks in advance.
채택된 답변
Daniel Dolan
2023년 5월 3일
I will assume that every frame is a 2D array of the same size. Use the first array to preallocate a 3D array, each layer of which holds one 2D array. Then loop through the each frame, generating the appropriate field name with sprintf.
N=2879;
result=repmat(DATA.Frame1,[1 1 N]);
for n=2:N
name=sprintf('Frame%d',n);
result(:,:,n)=DATA.(name);
end
There is lots of room for improvment here--just showing the highlights now. If the arrays are larger than 2D, this code can be tweaked to add another dimension.
추가 답변 (1개)
Daniel Dolan
2023년 5월 3일
I will assume that every frame is a 2D array of the same size. Use the first array to preallocate a 3D array, each layer of which holds one 2D array. Then loop through the each frame, generating the appropriate field name with sprintf.
N=2879;
result=repmat(DATA.Frame1,[1 1 N]);
for n=2:N
name=sprintf('Frame%d',n);
result(:,:,n)=DATA.(name);
end
There is lots of room for improvment here--just showing the highlights now. If the arrays are larger than 2D, this code can be tweaked to add another dimension.
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