Re: Why doesn't pause work in a function

[Ben Abbott]

On Feb 17, 2012, at 11:39 AM, J Stasko wrote:

>> 2012/2/15 Ben Abbott <address@hidden>:
>>> 
>>> On Feb 13, 2012, at 7:02 PM, J Stasko wrote:
>>> 
>>>> I didn't see this in the documentation...  Here's my function code:
>>>> 
>>>> function plottrack(x)
>>>>   [slices,values] = size(x)
>>>>   for i = 0 : ((values-3)/6)-2
>>>>   i
>>>>   pause
>>>>   plot(x(:,(i*6)+4),x(:,(i*6)+5))
>>>>   pause
>>>>   endfor
>>>> endfunction
>>>> 
>>>> Here's the output:
>>>> 
>>>> octave-3.4.0:2> plottrack(snaps)
>>>> slices =  31
>>>> values =  183
>>>> error: plottrack: A(I,J): column index out of bounds; value 183 out of 
>>>> bound 183
>>>> error: called from:
>>>> error:   /Users/johns/Programming/diameter/plottrack.m at line 4, column 4
>>>> octave-3.4.0:2>
>>>> 
>>>> 
>>>> So really, there are two questions.  One is why, when i = 28 the
>>>> calculation can yield a column index out of bounds...
>>>> 
>>>> The other is, as I was trying to debug it using "i" and "pause", I
>>>> neither see the value for i nor do I get the pause on my display.
>>>> 
>>>> Thanks for all the help!
>>>> 
>>>> -John Stasko
>>> 
>>> I tried
>>> 
>>>        plottrack (rand (31, 183))
>>> 
>>> Both pause statements work and I encountered no errors.
>>> 
>>> Ben
>> 
>> ---------- Forwarded message ----------
>> From: J Stasko <address@hidden>
>> Date: 2012/2/15
>> Subject: Re: Why doesn't pause work in a function
>> To: Ben Abbott <address@hidden>
>> 
>> 
>> Weird.  I get this:
>> 
>> octave-3.4.0:3> plottrack(rand(31,183))
>> slices =  31
>> values =  183
>> error: plottrack: A(I,J): column index out of bounds; value 183 out of bound 
>> 183
>> error: called from:
>> error:   /Users/johns/Programming/diameter/plottrack.m at line 4, column 4
>> 
>> The pause didn't stop the code and I got an error.
>> 
>> -John
> 
> _Hi,
> 
> Sorry to post this again, please help...
> 
> Here's my version:
> 
> octave-3.4.0:1> ver
> ----------------------------------------------------------------------
> GNU Octave Version 3.4.0
> GNU Octave License: GNU General Public License
> Operating System: Darwin 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun
> 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386
> ----------------------------------------------------------------------
> no packages installed.
> octave-3.4.0:2> system("uname -a")
> Darwin s-3.local 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun  7
> 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386
> ans = 0
> octave-3.4.0:3>

I tried ...

        plottrack (rand (31, 183))

... on SnowLeopard (Darwin 10.8.0) with Octave 3.4.0 from source forge. I 
encountered no errors and obtain the same result as I did on Lion.

Any chance your Octave is using the wrong plot.m? What does "which plot" return 
?

Ben