slow tcl/tk

-----Original Message-----
From: r-devel-bounces at r-project.org 
[mailto:r-devel-bounces at r-project.org] On Behalf Of Peter Dalgaard
Sent: Wednesday, October 31, 2007 9:54 AM
To: Adrian Dusa
Cc: r-devel at r-project.org
Subject: Re: [Rd] slow tcl/tk

Adrian Dusa wrote:

Dear list,

Building my QCAGUI package using Rcmdr 1.3.0, under R 2.6.0 (using 
Kubuntu
Gutsy) I noticed the library starts visibly slower than... 

somewhere 

in the past.

I used the same version of Rcmdr under previous versions of 

R and the 

tcl/tk window used to open instantly. Under the current version 
though, the window take seconds to open: first it builds the base 
window, then the menus and finally the complete window.

The whole process takes about five seconds.
I don't think it has anything to do with the Linux version, 

because I 

noticed the same behavior under the previous one as well.

Is there something changed about tcl/tk in R 2.6.0?

  

Hmm, there's an event loop messup which was fixed in 
R-patched. The main effect of that one was that scrollbars 
could go crazy. Not sure whether it might cause your kind of 
symptoms, but you might check out the fixed version.

It doesn't seem to make much of a difference here. Rather, I 
suspect that Rcmdr itself got changed and a number of things 
that used to be fixed are now generated programmatically. 

There's certainly a lot of
eval(parse(...)) stuff going on. (This sort of code always 
makes me a little suspicious, but I haven't by far studied it 
well enough to say whether there might be a more efficient way.)

Thanks in advance,
Adrian

  

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