Writing results to different files

Hi,

I am trying to make a code so that when I run my function, the results get saved in different files each time I run it. So for example, I run my code the first time, the results get saved in file 1 then file 2, file 3... so on Is there a way I can accomplish this?

Answer 1

[Stephen23]

This is such a common question that we have a very detailed description in the wiki page, complete with example code. It has also be answered many times on this forum:

http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

http://www.mathworks.com/matlabcentral/answers/57446-faq-how-can-i-process-a-sequence-of-files

There are several different functions for saving data to text files. Picking the best one depends on the nature of your data, which you do not tell us anything about. You can find a list of these functions here:

http://www.mathworks.com/help/matlab/standard-file-formats.html

http://www.mathworks.com/help/matlab/text-files.html

[Tab for Lab]

I get that the sequence I require is:

function [ ] = multiruns(x, y, z)

for i = 1:6;
    textFilename = ['file', num2str(k), '.txt'];
end

The problem now is I dont know how to input results in it. For example: x, y, and z are my results. How do I add those to the files in sequence?

[Stephen23]

You have not told us what x, y, and z are: are they numeric arrays, cell arrays of steings, tables, character arrays, mixed cell arrays, ...? Are they scalar, 2D, or ND arrays? Each of these requires a different approach to file writing. If you want to tell us exactly what they are, then er can help you to write them to file.

You also need to tell us the required file format, which you have not told us so far.

[Tab for Lab]

The file format I want to make is either a text file or a mat file. If I want to read the files later I believe its best that we make it a .mat file. In terms of x, y, z results I thought by default I was making them scalar quantities. Basically x, y, and z are means of certain data that I have in my main function.

The question is to first run the experiment about 3 times, and add results (mean) to a different file each time. And once I have that file I need to be able to read it in order to graph the different means every time.

so for example: x = mean (data_a) y = mean(data_b) z = mean(data_c) Now I want all 3 of these results in a different file each time I run my main function. Then I want to read those files in order to graph these 3 means. How can I do that?