hi dears,
I have some data and i want these in .txt file , like this: ...
20090101.000000
Factor
1
2 3 4 5
6 7 8 9
First line is time,second line not change in time (constant) and then matrix(n*m),
And next line over again i must have this structure but time is 20090101.010000 and then "factor" and"1" and then matrix (n*m). I have time (matrix(n*1)) but in datenum format, and i have data matrix (in fourth line) but these data is on matrix (t*n*m) t is length of time ,in first hour use matrix(1,n,m) and so on
Now i want to write these data on text file,
I don't know how can i do that,
Any one help me please?
If all the matrices are of the same size, you could reshape them into rows [1, n*m] followed by the new line symbol. When reading from this file, reshape it back.
When writing data to a file the most important question is: who is going to read it. If it's a program, then Pavel's solution is a good one (you will have to not n and m somewhere). And if you have a lot of data, then write them out binary.
If it's a human and if the matrices are small, the just loop over rows and columns of the matrix and write them out.
Where is you problem? Don't you know how to loop over a matrix? Don't yo know how to write a formatted number? Don't you know how to convert a date from a string to a number?
dear Mr.Patrik,
i don't know how i can print data to .txt file, by this format:
1 line date, 1 line m*n matrix and next 1 line date and so on,
i know about 'fprintf' that can do this, but by 'fprintf i reach' this format :
1 line date, 1 line one of array matrix and so on,
i use this :
fid=fopen('1.txt','w');
formatSpec='%s \n FACTOR \n 1 \n %f \n';
fprintf(fid,formatSpec,time,spectr);
"time" is matrix 320*20 , "spectr" is matrix 53*91 ....
I do not understand the dimensions of your variables..
time: 320 x 20: are these characters or doubles or integers?
matrix: 53 x 91: these dimensions are different from the time above?
Who is supposed to read that file? A human? Or do you read it with a program? Do you read it with matlab or with some other program?
time is character, and matrix is vary on time, in other words matrix dimension is 320*53*91 ,
this data is on a mat file and i bring it on variables, (time & matrix),
Ok, we are getting closer. Who is going to read this file. Will it be a human or will it be a program. If it's a program: Is it Matlab or is it another program? If it is another program: What type of input does it expect?
What you are trying to write with fprintf is a text file, not a matlab data file (.mat). If you read data by matlab again, then just save your variables to a .mat file and load this saved file again when you process it.
Otherwise you will have to parse a human readable text file, which in general is a real pain.
Or what exactly are trying to do overall?
No , i shoud print it on txt file, and import to another program,
just on that format
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