How can I open different file types with one skript

I want to be able to select a filetype (.txt/.xlsx/.csv/.mat) with one skript. I thought about writing an if/else skript like

 [filename,filepath] = uigetfile('','filep');
      file = [filepath,filename];

            % -- open, read, close .txt file, if exist --

            fid = fopen(file);
            if fid == -1, error('File could not be found. Check filename and path.'); end

           %for .txt

           result = isfile('.txt')
           if exist (result)
do...
else
result=isfile('.xlsx')
if exist (result)
do...

I'm sure there must be an easy way but no idea how I can write that.. Thanks a lot

Answer 1

[Geoff Hayes]

inah - use fileparts to get the file extension which you can then use in your if/elseif conditions. For example,

 [filename,filepath] = uigetfile('','filep');
 f = fullfile(filepath,filename);
 [filepath,name,ext] = fileparts(f);
 if strcmpi(ext,'txt')
     % text file
 elseif strcmpi(ext,'xlsx')
     % Excel file
 elseif strcmpi(ext,'mat')
     % mat file
 elseif strcmpi(ext,'csv')
     % csv
 else
     fprintf('unhandled file extension\n');
 end

Note how fullfile is used to correctly build f which is the full filename and path.

[inah]

great, that works :D