how to put several parts together in a call to function using file path and file name?

 This way everything seems to work because file dftregistration.m is in the current MATLAB directory
  [outputGreg]=dftregistration(fft2(Frame),fft2(LightNorm),str2num(presicion{:}));

However, I am not sure how to achieve the same results using

[AlgoriphmName AlgoriphmPath]=uigetfile('*.m','Select Algoriphm used for realignment','dftregistration.m');

How to use AlgoriphmPath and AlgoriphmName in [outputGreg]= to get the same result like above?

Answer 1

[Image Analyst]

If the file specified in the AlgoriphmName string is not on the search path, you'd need to use cd before you call it:

cd(AlgoriphmPath);
eval(AlgoriphmName);

By the way, in English algorithm has no "p" in it.