Re: Using keyboard command for debugging

[Philip Nienhuis]

Please do "reply all" so other people on the list can also benefit.

address@hidden wrote:
> Hello Philip
>     Thank you very much for your response about my question shown below. I did insert the 
> "keyboard" command on line 302. Am using "disp" to show the variables. However, 
> am a bit of a loss as to what and how to display the variables. Here is the code
> > > >
> function showtrainprogress(show,stop,iEpochs,epochs,time,currentTime, \
>            goal,perf,minGrad,normGradX,shortStr,net)
>
>      ## check number of inputs
>      error(nargchk(12,12,nargin));
> keyboard
>
> ## show progress
>      if isfinite(show) & (!rem(iEpochs,show) | length(stop))
>        fprintf(shortStr);   # outputs the training algorithm
>        if isfinite(epochs)
>          fprintf(", Epoch %g/%g",iEpochs, epochs);
>        endif
>        if isfinite(time)
>          fprintf(", Time %4.1f%%",currentTime/time*100);   # \todo: Time
> > > > >
>
> I tried a few debug disp commands
> debug> disp (iEpochs)
> 0
> debug> disp (epochs)
>   100
> debug>

You don't need disp(); just typing the name of the variable will do.

Anyway are those values "valid"? are they OK?

> You indicated rem() might be the culprit. I am having bridging the gap as to 
> what to do next. Should I try to display    !rem(iEpochs,show) | length(stop) ??

Have you tried simply typing:

!rem(iEpochs,show)

at the Octave prompt in debug mode (i.e., when execution stops at the 
keyboard statement)?
It looks like a valid Octave statement so why not try?

If you get errors that's because then the bug is there. So if that is 
the case you could then try (at the Octave prompt):

show

isfinite(show) & (!rem(iEpochs,show) | length(stop))

length(stop)

etc etc

Philip