eval() Help
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From: dpb on 18 Jul 2010 09:09 Caglar Ozdag wrote: > something like this: > >>> ns=int2str(17) >>> xs=num2str(18) >> help eval EVAL Execute string with MATLAB expression. EVAL(s), where s is a string, ... Read the beginning help discussion carefully, paying most particular attention to the modifier of "string". Even more specifically, the number of inputs expected...then compare that to the number of individual strings in the argument as it is written. Then help horzcat --
From: Steven_Lord on 19 Jul 2010 10:53
"Caglar Ozdag" <caglarozdag(a)gmail.com> wrote in message news:i1tdp9$cg6$1(a)fred.mathworks.com... > I can't figure out what it is that I'm doing wrong. eval() always returns > with the same error, even in the simplest of executions. > >>> d = eval(ns,'+',xs) > ??? Index exceeds matrix dimensions. >>> eval('1/2') > ??? Index exceeds matrix dimensions. > > Some guidance will be appreciated. As others have suggested, you likely have a variable named EVAL in your workspace and that is causing this error. But if you'll forgive me a little bit of snarkiness, what you're doing wrong IMO is that you're using EVAL at all. DON'T USE IT unless you ABSOLUTELY need to use it. There are often alternate approaches that are preferable to EVAL for various reasons. -- Steve Lord slord(a)mathworks.com comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ To contact Technical Support use the Contact Us link on http://www.mathworks.com |