appending characters to matrix

I tried to append characters to a matrix:

>> matrix=[1:3;6:8]

matrix =

     1     2     3
     6     7     8

>> fid=fopen('mongiss.tv', 'w')

fid =

     5

>> fprintf(fid, '%d %d\n', matrix)

ans =

    12

>> fclose(fid)

ans =

     0

>> load mongiss.tv >> mongiss

mongiss =

     1     6
     2     7
     3     8

>> fid=fopen('mongiss.tv', 'a')

fid =

     5

>> fprintf(fid, '%d %d\n', 1, 4)

ans =

     4

>> fclose(fid)

ans =

     0

>> fid=fopen('mongiss.tv', 'a')

fid =

     5

>> fprintf(fid, '%c %c\n', 'y', 'n')

ans =

     4

>> fclose(fid)

ans =

     0

>> load mongiss.tv

??? Error using ==> load

Unknown text on line number 5 of ASCII file

C:\Users\Tor\Documents\MATLAB\mongiss.tv

"y".

>>

Answer 1

[Fangjun Jiang]

The file is written correctly. It is just that the function load() can't deal with it. If you read the help of load(). It says "With -ASCII, LOAD will error if the file is not numeric text.".

You can use importdata('mongiss.tv') to read the data. The data will be read in a structure though.

But to verify that you can append characters to a text file with numerical data, you've achieved the goal. You can use a text editor to verify it.

[Tor Fredrik Hove]

Thanks for the answer! I got through it by using fgetl:

>> fid=fopen('mongiss.tv')

fid =

5

>> while ~feof(fid)

oneline=fgetl(fid)

end

oneline =

1 6

oneline =

2 7

oneline =

3 8

oneline =

1 4

oneline =

y n

>>