how to store the matrix into dat file.

Hi,

I have one question about saving the matrix into .dat file. I donot know how to implement it. I will describe the question.

1. I have one matrix c

2. I want to save c into one .dat file in this format:

1 qid:1 1:0.4709 2:0.1948 3:0.2277 4:0.9254

2 qid:1 1:0.2305 2:0.2259 3:0.4357 4:0.4302

3 qid:1 1:0.8443 2:0.1707 3:0.3111 4:0.1848

The elements are separated by a space character Does anybody can help me solve this problem? Thanks so much.

Answer 1

[Walter Roberson]

fid = fopen('YourFile.dat', 'w');
fprintf(fid, '%d qid:1 1:%6.4f 2:%6.4f 3:%6.4f 4:%6.4f\n', C.');
fclose(fid)

[song]

Hi, thank you. but the data is stored in one row which should have been stored in 3 rows. could you please modify your code ?

[Walter Roberson]

The data is not stored in one row: you are using an obsolete editor to look at the file. Microsoft started replacing NotePad by 1997.

If you need to keep using 20 year old software, then replace the 'w' with 'wt'

[Aiswarya Babu]

help me to store data as a text file.

These are the values i need to store as a text file .

29 C3 50 5F 57 14 20 F6 40 22 99 B3 1A 02 D7 3A

Kindly help me.

Answer 2

[Azzi Abdelmalek]

A=rand(3,5)
fid=fopen('file.dat','w')
fprintf(fid,[repmat('%f ',1,4) '\r\n'],A)
fclose(fid)

[song]

It is far from what I need. Thank you anyway.