Writing uint32 type of array contents to text file in Matlab

Question

I am trying to read the contents of a 512*512 matrix of class uint32 to a text file. This matrix has 0s and 1s as its contents. The below code keeps returning me this error: "Cell contents reference from a non-cell array object."

fileID = fopen('my_data.txt','w');
[nrows,ncols] = size(matri_working_now);
for row = 1: nrows
fprintf(fileID,matri_working_now{row,:});
end

Any suggestions/ideas?

Thanks!!

score 1 · Accepted Answer · answered May 22 '14 at 15:30

1

try replacing

fprintf(fileID,matri_working_now{row,:});

with

fprintf(fileID,matri_working_now(row,:));

It seesm like you are trying to access matri_working_now as a cell using curly braces {}, while you should access it as a regular matrix using parentheses ().

answered May 22 '14 at 15:30

Shai

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Well i did try this. Thats when i got the uint32 error. – Kashif Nawaz May 22 '14 at 16:43
@KashifNawaz what's the "`uint32` error"? – Shai May 22 '14 at 16:45
the matrix is of type uint32 and i think im accessi it as a numeric/string – Kashif Nawaz May 22 '14 at 16:48
with normal brackets, I get the error Error using fprintf. Invalid format. – Kashif Nawaz May 23 '14 at 09:18
this seems to work but it takes the data column wise and outputs it to the text file as a single stream and not as an array fileID = fopen('my_data2vs.txt','wt'); for row = 1:nrows fprintf(fileID,'%d\n',matri_working_now(row,:)); end fclose(fileID); – Kashif Nawaz May 23 '14 at 09:47
the significance of 'wt' is explained here : http://stackoverflow.com/a/1456924/1060030 – Kashif Nawaz May 23 '14 at 14:58

Writing uint32 type of array contents to text file in Matlab

1 Answers1