how can i convert a file into a matrix?

I want convert a file(.pdf/.txt/.jpg...) into matrix(with values integer or binary), and after i must ri-convert it. Can i do it?

PS:i tried only with images.jpg using imread() and imwrite(), but if i don't know the file extension? i want to do this also i don't know the nature of file.

thanks.

Answer 1

[Friedrich]

Hi,

you can always apply fileread to any file (and write it back with fopen,fwrite,flcose) but the main question will be: What do you want to do with the data you read into MATLAB?

tmp = fileread(FILENAME)
fid = fopen(OUTPUT_FILENAME,'w')
fwrite(fid,tmp,'*char')
fclose(fid)

[Tommaso Ruscica]

thanks for answer :) I have to do a network simulation with some nodes that do a particular function(its works with matrix).So i want convert a file,send the matrix in the network and decode the matrix to file.(sorry for my english i'm italian)

PS:i tried that you say but a file.txt was convert into a cell with string values and i want integer as bit because i'll send byte in the network.

[Friedrich]

You cann apply uint8(tmp) to get a vector with unsinged integer values. When you write it back either cast to char or use as format specifier *uint8 instead of *char