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How can I import a vector of vectors from txt file into a matrix

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Eli Zatulovski
Eli Zatulovski 2022-2-4
回答： KSSV 2022-2-4
Hello,
I have a data.txt file that looks like this, for example:
[1,2,3,[1,2,3,4,5,6,7,8,9,10]]
[1,2,4,[2,3,4,5,6,7,8,9,10,11]]
[1,2,5,[3,4,5,6,7,8,9,10,11,12]]
the length of each line and each inner-vector, the forth element in each line, is always the same.
how can i import that data into a matrix that will contain the forth element as a vector of its own?
i have tried to import the data using 'importdata', which imported it as a (numOfLines*1) cell and using 'cell2mat' but i got that error:
Error using cat
Dimensions of arrays being concatenated are not consistent.
Error in cell2mat (line 83)
m{n} = cat(1,c{:,n});

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回答（1 个）

KSSV
KSSV 2022-2-4
fid = fopen('data.txt') ; % your data file
S = textscan(fid,'[%f,%f,%f,[%f,%f,%f,%f,%f,%f,%f,%f,%f,%f]]');
fclose(fid) ;
S = cell2mat(S) ;
A = S(:,1:3) ;
B = S(:,4:end) ;

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