loadvar

 LOADVAR loads a specific variable
 from a mat file and returns it.
 If no variable name is provided,
 the first variable is chosen.

 Made as an example for "loading mat-files!"

 USAGE:
 >> a=magic(3);
 >> b='not me';
 >> save('tmp');
 >> clear all;
 >> c=loadvar('tmp','a')
 
 c =  8     1     6
      3     5     7
      4     9     2
 
 >> c=loadvar('tmp','b')
 
 c = not me
 
 >> c=loadvar('tmp')
 
 c =  8     1     6
      3     5     7
      4     9     2
 
 >> c=loadvar('tmp','d')
 
 c =  []
      
 aa=loadvar('batchrun-sgif-20-beta-0.mat','tott')
 Empty value is returned if the variable is not found
 aa=loadvar('batchrun-sgif-20-beta-0.mat','tottvvv')
 aa=loadvar('D:\programfinal\embresults\accasen\previouscase.mat','elapsedtime')
 if nargin == 1,    varnames = load(filename);
 loadvar(filename);