trying to open a file in loop matlab

Question

I have been trying to open files in a loop. I did this:

file='';
loc='F:\UT_timestep\';
name='time_';
gridext='.grd';
for i={'a','b','c'}
   file=strcat(loc,name,i,gridext);
   f=fopen(file,'rb');
   ...
   fclose(f);
end

but it gives this error :

Error using fopen
First input must be a file name of type char, or a file identifier of type double.

Error in script_UT (line 28) f=fopen(file,'rb');

I am not able to understand why this is giving error. Please help.

rayryeng · Accepted Answer · 2014-10-31 14:25:44Z

2

This is because file is a cell array of 1 element. You want the actual string inside the cell array, not the actual cell itself. Do this:

file='';
loc='F:\UT_timestep\';
name='time_';
gridext='.grd';
for i={'a','b','c'}
   file=strcat(loc,name,i,gridext);
   f=fopen(file{1},'rb'); %// Change
   ...
   fclose(f);
end

answered Oct 31, 2014 at 14:25

rayryeng

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