How to import data from a txt file that has 256 arrays and 128 data points per array into a 128x256 matrix?

Question

parslee 2021-10-11

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1560926-how-to-import-data-from-a-txt-file-that-has-256-arrays-and-128-data-points-per-array-into-a-128x256

评论： parslee 2021-11-15

采纳的回答： KSSV

SeqLoop.data.kSpaceOS.txt

I have data in a txt file that I would like to import into Matlab for further analysis.

The file has val(:,:,1), val(:,:,2), and so on all the way to val(:,:.256) and each array contains 128 data points.

I want to import these data so that it’s in a 128x256 (column x row) matrix.

The first line of all the arrays contain a scientific notation that must be multiplied by the following cells in that array.

For example, the frst line of val(:,:,256) is 1.0e-08 * followed by 128 data points.

I tried using the load command and it outputs an error message.

I also tried using importdata, which isn’t working either.

What can I do to import this data into a 128x256 matrix? (Please see attached for the txt file).

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C B 2021-10-11

在 MATLAB Online 中打开

val(:,:,1) =[...
...
0e0 *...
...
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   val(:,:,2) =[...
...
0e0 *...
...
0000 + 0.0000i...
0000 + 0.0000i...
0000 + 0.0000i...
0000 + 0.0000i...
0000 + 0.0000i...
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Answer 1

KSSV 2021-10-11

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1560926-how-to-import-data-from-a-txt-file-that-has-256-arrays-and-128-data-points-per-array-into-a-128x256#answer_805761

编辑：KSSV 2021-10-11

在 MATLAB Online 中打开

filename = 'SeqLoop.data.kSpaceOS.txt' ; 
fid = fopen(filename,'r') ;
S = textscan(fid,'%s','delimiter','\n') ;
fclose(fid) ; 
S = S{1} ; 
S = str2double(S) ; 
idx = isnan(S) ; 
S = S(~idx) ; 
S = reshape(S,128,[]) ; 