what is the function of 'eval' ?

조회 수: 71 (최근 30일)
pricky 2014년 4월 23일
답변: lvn 2014년 4월 23일
Hi Please explain what function is eval performing here and is it necessary to use it. I'm planning to use eval function to store code book, is there any alternative.
clc; Nsamp=35000; fs=8050; beep I=wavrecord(Nsamp,fs);
codebook = MFCC_BasedCodebook(I,fs); in=inputdlg('Enter file name -5 characters'); FileName=cell2mat(in); eval(['save ' 'test\' FileName ' codebook;']);
Thank you

채택된 답변

lvn 2014년 4월 23일
Eval can be used to run matlab commands which are not known in advance, but only at runtime. In your example eval executes the commando 'save test\FileName codebook' (with filename the specific filename constructed above).
The use of eval is not recommended http://www.mathworks.nl/help/matlab/matlab_prog/string-evaluation.html and in your case, it can simply be replaced by using the different syntax of the save commando ('help save') e.g.

추가 답변 (0개)


Help CenterFile Exchange에서 Programming Utilities에 대해 자세히 알아보기


Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by