Individual files reading

I have some daily data , files shows the details of year, month and day GSAT20090101_xyz.h5, GSAT20090102_xyz.h5 ...31 , same for month 02 also.

I wanted to read only one month file from this folder e.g jan 1-31, 1-28 ...

I am new in matlab, so somebody please tell how i can set for loop for this problem.

Answer 1

[Arturo Moncada-Torres]

On a quick thought, it would be something like this:

files = dir('*.h5');    % Find the files with extension .h5 in the current directory.
month = '01';           % Month must be a string ('01' for January, '02' for February, etc.).

for ii = 1:numel(files)
    nameFound = strfind(files(ii).name, ['GSAT2009' month]);

      if nameFound
          fid = fopen(files(ii).name);
          % Do whatever you need with the files here.
          fclose(fid);
      end
  end

EDIT

If you want to read year information separately, you can use the following, which is very similar:

files = dir('*.h5');    % Find the files with extension .h5 in the current directory.
month = '01';           % Month must be a string ('01' for January, '02' for February, etc.).
year = '2009';          % Year must be a string.

NOTE: If month or year are not strings and are numeric (double), you can use the function num2str.

for ii = 1:numel(files)
    nameFound = strfind(files(ii).name, ['GSAT' year month]);

      if nameFound
          fid = fopen(files(ii).name);
          % Do whatever you need with the files here.
          fclose(fid);
      end
  end

Try it and let me know if it works.

[Uday]

yeh its works , Thx

If I have 2 years data 2009,2010.

How I should read these two years data separately at same time.

because I want to plot monthly maps , so for this purpose I need to read whole month data separately.

[Arturo Moncada-Torres]

See the edit please ;)

[Uday]

This codes works for only one month, like month='1'but if I want to read data for all month than that string does not work. (month-'1''2'...; )

could you please tell me how I can fix this issue ?

I would like to read all days files those are available for that particular month and it should select next month (e.g jan 1-31 the it should go to feb 1-28 , march ....)