adding onto the discussion, I wanted to do the same thing as Jason, but instead of just doubles, I had arrays of numbers and strings that I wanted to assign to variables. A slight modification of Jason’s code is below which allows one to read in variables from file assign the variables in the matlab workspace.

my input looks something like this:

mtraj{1}=’src/ww1.assn.traj’;
mtraj{2}=’src/ww2.assn.traj’;
mtraj_to_use=[1, 2];
lag_i=[ 15 ];
lag=[1, 2, 4, 8, 10, 16, 25, 50, 100, 150, 200, 250 ,300, 400, 500, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 8000, 10000];
low_mem_map_matrix=0;
occ_threshold=0;
symm=1;
macrostate_defs=[2, 4, 6, 8, 10, 20, 40, 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 800];

it requires a semicolon separating all variable definitions as well as commas between array elements. Besides those two qualifications, it follows matlab syntax. I hope this is useful to other matlab users!

fid = fopen(input_file);
inputs = fscanf(fid,'%s');
fclose(fid);                                              

limits = strfind(inputs,';');
ndx = 1;
for(i = 1:length(limits))
  t = inputs(ndx:limits(i));
  t = strrep( t, ',' , ' ');
  eval(t);
  ndx = limits(i) + 1;
end

Please make sure you are constructing the name of the file correctly. For testing, just write out the file name. does it import then?

Doug

fileName= [ 'data' num2str(i)];
datastruct.(fileName)=csvread([fileName'.csv'],0,0,[0,0,32766,0]);

But didn’t work.
I have also some “.txt” files that have some header line and I use “importdata“to load one of my files, so I used:

fileName= [ 'data' num2str(i)];
datastruct.(fileName)=importdata ([fileName '.txt'], ',', 18);

But this didn’t work, too.

spent hours trying to figure this one out and it turns out to be beautifully simple.

One very grateful newbie

The Dir command should help.

Doug

I used to work with my ascii files as you explain. I even write a code called INT2STRZ
http://www.mathworks.com/matlabcentral/fileexchange/12973
to work around with files named data001.txt, data002.txt, etc.

Now I prefer to use another way. First I search for the files names and create a list with the LS command (in windows) which allows me to use the wildcard ‘*’ and then I just pick the file I need. So, your code will look like this:

list = ls('data*.txt'); % Files names on rows (WIN OS)
for k = 1:size(list,1)
 fileName = deblank(list(k,:)); % Name of k-file
 dataStruc.(fileName) = load(fileName);
end

Of course, there is an extra line, and one should be aware that all ‘data*.txt’ files will be read! Other safer way is to save the filenames on a file and read instead of use LS. Well, just a thought

Carlos

-Doug

See here for the details on compiling with associted scripts:

http://www.mathworks.com/access/helpdesk/help/toolbox/compiler/f13-1003481.html#f13-1003495

A basic example of the old script-based m-file is:

Latitude = 49.3824;
Longitude = -80.4862;
Altitude = 300;

As a csv file, this is:
Latitude,49.3824
Longitude,-80.4862
Altitude,300

To make those variables available and to replace the

eval([filename '_model_parameters']);

command, I have this:

% Get data from csv files
fid = fopen(filename '_model_parameters.csv');
inputs = textscan(fid,'%s%f','delimiter',',');
fclose(fid);

% Separate variables from values
vars = genvarname(inputs{1,1});
vals = inputs{1,2};

% Assign values to variables
for i = 1:size(vars,1)
        eval([cell2mat(vars(i)) '= vals(i);']);
end

Thanks (again) to Doug,
Jason.

For example, if I had a series of parameters as a script (a .m file), this won’t work with the compiler:

eval([filename '_model_parameters']);

Is there an equivalent with load that would work?

Thanks for the videos.
Jason.