Thread Subject: How to detect if calling engEvalString() has caused an error?

Hallo!

I've been doing some C++ programming, using the Matlab
Engine. I'm using the engEvalString() function to execute a
number of "unknown" m-files, meaning I do not know whether
these script files do contain errors or not. Therefor I'd
like to get some feedback, on the called script, i.e. if
matlab encounterd an error running the specified m-file.

I'm already checking the return value of engEvalString(),
but this is not working for erros that are caused by the
executed commands, i.e. the m-file. I've also tried to
retrieve the matlab output by using engOutputBuffer(), but
since I do not know how to determine if it contains an
error message or a regula output, it's no help either.

So, does anyone know a way of detecting errors within
commands that are executed via engEvalString()?

TIA
Sven

"Sven Fischer" <fisher311-matlab@yahoo.de> wrote in
message <ful6o2$bq4$1@fred.mathworks.com>...
>
> So, does anyone know a way of detecting errors within
> commands that are executed via engEvalString()?

I don't think there is any way, unfortunately. The things
you are trying (e.g., try to get the result and see if you
got it ok and the values are reasonable) are the only
things I am aware of.

James Tursa

"James Tursa" <aclassyguywithaknotac@hotmail.com> wrote in
message <fuldul$475$1@fred.mathworks.com>...
> "Sven Fischer" <fisher311-matlab@yahoo.de> wrote in
> message <ful6o2$bq4$1@fred.mathworks.com>...
> >
> > So, does anyone know a way of detecting errors within
> > commands that are executed via engEvalString()?
>
> I don't think there is any way, unfortunately. The things
> you are trying (e.g., try to get the result and see if you
> got it ok and the values are reasonable) are the only
> things I am aware of.

I was afraid to hear that. Otherwise life would be way too
easy. ;-) Thanks anyway.

I guess I'll have to use a workaround like evaluating "clear
success; myScript; success=1;" and trying to retrieve the
"success" variable from Matlab.

Best wishes,
Sven