[R] wait for graph to finish plotting

[news at aleblanc.cotse.net]

David Winsemius <dwinsemius at comcast.net> writes:

Aha.. thankyou, I was not aware of that.

> Now you have changed plotting functions from plot and barplot over to
> barchart (a Lattice function) and were not aware of FAQ 7.22:
>
> http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-do-lattice_002ftrellis-graphics-not-work_003f
>
> --
> David.
>>
>>
>> Tal Galili <tal.galili at gmail.com> writes:
>>
>>> Could you please paste the exact code you are using? (the one with
>>> the pdf and
>>> dev.off, outside the loop )
>>>
>>> ----------------Contact
>>>
>>> On Sat, Oct 23, 2010 at 4:53 PM, <news at aleblanc.cotse.net> wrote:
>>>
>>>    David Winsemius <dwinsemius at comcast.net> writes:
>>>
>>>> On Oct 22, 2010, at 12:50 PM, <news at aleblanc.cotse.net> wrote:
>>>>
>>>>> Tal Galili <tal.galili at gmail.com> writes:
>>>>>
>>>>>> I suspect that using "dev.copy2eps" Is not going to help you here.
>>>>>>
>>>>>> Please try again using:
>>>>>>
>>>>>>  pdf(...)  # Check: ?pdf
>>>>>>  for(i in something)
>>>>>>  {
>>>>>>     plot(things)
>>>>>>  }
>>>>>>  dev.off()
>>>>>>
>>>>>> But give pdf() the file path.
>>>>>> Make sure you can make it work with simple plots.  then check it
>>>>>> on
>>>>>> your
>>>>>> situation, and let us know if it works :)
>>>>>> (I had it work with very heavy plots - so I trust it will work for
>>>>>> you)
>>>>>>
>>>>>> (p.s: please keep cc'ing the r-help list so others will know the
>>>>>> stage of your
>>>>>> problem, in case others would like to add more help :) )
>>>>>>
>>>>>> Cheers,
>>>>>> Tal
>>>>>>
>>>>>
>>>>> The problem is that the filename changes with each iteration of the
>>>>> loop, so I need to
>>>>> save the graph inside the loop.
>>>>> I tried this:
>>>>>
>>>>> for(...)
>>>>> {
>>>>>    ...
>>>>>    pdf(...)
>>>>>    barplot(...)
>>>>> }
>>>>>
>>>>> but I just got a load of empty graphs.
>>>>
>>>> Because you failed to follow Ted directions to use dev.off()
>>>>
>>>> pdf() just opens the file for writing, dev.off() executes the
>>>> writing
>>>> and closes properly.
>>>>
>>>> --
>>>> David.
>>>    I just tried with dev.off() but still the same problem.
>>>    I tried with pdf() and dev.off() inside the loop, and with them
>>> outside
>>>    (pdf before the loop,
>>>    and dev.off after). Same results each time: an empty pdf file.
>>>    I am using R version 2.11.1 if this makes any difference.
>>>    --
>>>    aleblanc
> David Winsemius, MD
> West Hartford, CT
-- 
aleblanc