[R] txtProgressBar()

[Ivan Calandra]

Thank you Greg,

This is what I figured out... The problem with txtProgressBar() is that 
many packages display some information during installation (even with 
quiet=TRUE), especially the installation of dependencies, so that the 
progress bar is not very useful. So I have tried with tkProgressBar() 
and it seems to work, although it takes some time to initialize.

Ivan

--
Ivan Calandra, PhD
Scientific Mediator
University of Reims Champagne-Ardenne
GEGENAA - EA 3795
CREA - 2 esplanade Roland Garros
51100 Reims, France
+33(0)3 26 77 36 89
ivan.calandra at univ-reims.fr
--
https://www.researchgate.net/profile/Ivan_Calandra
https://publons.com/author/705639/

Le 20/07/2016 à 17:39, Greg Snow a écrit :
> You need to figure out how to tell txtProgressBar what the progress is.
>
> One simple option would be that if you are installing 10 packages,
> then create the bar with a range of values from 0 to 10 and initialize
> it at 0, then after the first package installs update it to show 1,
> after the 2nd installs update it to show 2, etc. until all 10 are
> installed.
>
> This is the simplest from the programming side, but the packages may
> take different amounts of time to install.  If you have a feel for how
> long they take to install (relative to each other) then you can
> incorporate this with a percentage, e.g. after the 1st package
> installs you may set the bar to 28%, after the second installs you may
> then update it to 31%, etc. with the jumps proportional to expected
> time to install.
>
>
> On Wed, Jul 20, 2016 at 2:00 AM, Ivan Calandra
> <ivan.calandra at univ-reims.fr> wrote:
>> Dear useRs,
>>
>> In a script that will be source()d, I want to install the uninstalled
>> packages and follow the progression with a bar. So I looked at
>> txtProgressBar() but I cannot figure out how to use it to show the
>> progression of the installation.
>>
>> All the examples I have found just display the progress of... the progress
>> bar itself ?
>>
>> Any idea?
>>
>> Thanks in advance,
>> Ivan
>>
>> --
>> Ivan Calandra, PhD
>> Scientific Mediator
>> University of Reims Champagne-Ardenne
>> GEGENAA - EA 3795
>> CREA - 2 esplanade Roland Garros
>> 51100 Reims, France
>> +33(0)3 26 77 36 89
>> ivan.calandra at univ-reims.fr
>> --
>> https://www.researchgate.net/profile/Ivan_Calandra
>> https://publons.com/author/705639/
>>
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>