How to import data for multiple files using for loop?

I named files as 1.data,2.data,....

I want to import these data,process the data using functions,plot the processed data.

my code is

When i give nname in command window it is showing 1.data. but i am getting error as

Answer 1

[Raj]

Here is a portion of code I use to read multiple files in cases like this:

for r=1:6 % Number of files
myfilename= sprintf('%i.data',r); %file names as 1.data, 2.data and so on.
filename = fullfile('C:\','Users','User','MATLAB',myfilename); % Put your file path here
fid = fopen(filename,'r'); % Open the file
Mydata = textscan(fid,'%f %f');% Assuming you have 2 columns of floating point data. Update as per your file accordingly.
fid = fclose(fid); % CLose the file
%%Delete temporary variables from workspace
%%Process the data
%%Plot the data
end

Hope this helps!!

[kamal]

Thanks its working

[kamal]

I want to save plot as 1.fig ,2.fig....

eval(['hgsave(''myfilename'');']);

All the files are saving in myfilename. Whereas myfilename is different for each loop as 1,2,3,,..6.

how to edit hgsave as to save in loop with different names as 1.fig,2.fig,...6.fig

[Raj]

I don't think you need eval for this. Try something like this:

for r=1:6 % Number of files
    myfilename= sprintf('%i.data',r); %file names as 1.data, 2.data and so on.
    filename = fullfile('C:\','Users','User','MATLAB',myfilename); % Put your file path here
    fid = fopen(filename,'r'); % Open the file
    Mydata = textscan(fid,'%f %f');% Assuming you have 2 columns of floating point data. Update as per your file accordingly.
    fid = fclose(fid); % CLose the file
    %%Delete temporary variables from workspace
    %%Process the data
    %%Plot the data
    figure(r) % this will give you a new figure for each set of data
    plot(x,y) % Put your data here
    file_name=sprintf('%d',r)
    hgsave(file_name)
end