Re: [R] Rgui.exe fix for "console not found" buffer overflow problem

From: Duncan Murdoch <murdoch_at_stats.uwo.ca>
Date: Sun 29 Oct 2006 - 13:06:20 GMT

On 10/29/2006 5:52 AM, Duncan Murdoch wrote:

> On 10/29/2006 1:12 AM, Jesse Albert Canchola wrote:

>> I'm using R on Windows XP Professional SP2.
>>
>> I figured out the fix for my buffer overflow problem that did not allow me
>> to use Rgui.exe for about two weeks. I would keep getting "console not
>> found" and even when I uninstalled and re-installed got the same problem.
>>
>> Here's how the problem started. In Rgui.exe, I attempted to get more
>> visible output in the buffer (I wanted to be able to scroll up the to the
>> top and see the variable names, etc.), so I put the max of all 9's in the
>>
>> Rgui.exe
>>
>> pull-down menus
>>
>> Edit > Gui Preferences... > buffer bytes 9999999999999
>>
>> and
>>
>>> lines 9999999999999999999
>>
>> not realizing this would effectively break the Rgui.exe and no matter what
>> you did to clean R out of your machine and re-install it, you would get
>> the same thing (with both v2.3.1 and v2.4.0). After a couple of weeks of
>> using Rterm.exe and meeting deadlines, I finally had time to wade through
>> the vague references online regarding where the problem might be.
> 
> Thanks for the report.  I'll take a look and see if there's a more 
> friendly way to handle this.
> 
> Generally starting with the --vanilla option is a good idea to help with 
> diagnosing startup problems.  If they go away, you've got a problem in 
> one of your startup files, and ?Startup tells you how to trace through 
> the startup process.

Whoops, I forgot that --vanilla doesn't stop an attempt to load Rconsole. I'll take a look, and see if perhaps it should.

Duncan Murdoch

> 
> Duncan Murdoch
> 

>> Here's the fix.
>>
>> Basically, you have to find the Rconsole file (no extension) outside of
>> the R installation directories (the installation directories will have at
>> least two copies but those will not be chosen first by the R environment.
>> What this means is that even if you delete every trace of the
>> installation, the Rconsole will linger unbenownst to you ready to strike
>> when you re-install. I found the errant copy in my "My Documents" folder
>> on my desktop. The way I did it was to put in the following (in its
>> entirety) in the Rterm.exe window (found at the bottom of ?Rconsole help
>> file within Rterm.exe):
>>
>> #### BEGIN R CODE ####
>> ruser <- Sys.getenv("R_USER")
>> cat("\n\nLocation for personal configuration files is\n R_USER = ",
>> ruser, "\n\n", sep="")
>> ## see if there are personal configuration files
>> sapply(c("Rconsole", "Rdevga"), function(x)
>> file.exists(file.path(ruser, x)))
>>
>> ## show the configuration files used
>> showConfig <- function(file)
>> {
>> ruser <- Sys.getenv("R_USER")
>> path <- file.path(ruser, file)
>> if(!file.exists(path)) path <- file.path(R.home(), "etc", file)
>> file.show(path, header=path)
>> }
>> showConfig("Rconsole")
>> ##### END CODE ####
>>
>> This will bring up the Rconsole file wherever it exists. Simply open up
>> the file (if not already open) in the free within-Windows Wordpad.exe
>> (Start > Run > Open Wordpad.exe) and change the values back to some
>> smaller number. For me I changed the problematic "bufbytes" and
>> "buflines" below:
>>
>> ### BEGIN Rconsole Code Portion ###
>> # memory limits for the console scrolling buffer, in bytes and lines
>> bufbytes = 9999999999999
>> buflines = 9999999999999999999
>> ###
>>
>> to something small like
>>
>> ### BEGIN Rconsole Code Portion ###
>> # memory limits for the console scrolling buffer, in bytes and lines
>> bufbytes = 25000
>> buflines = 50000
>> ###
>>
>> And voila! my Rgui.exe worked like a charm. It was fun using the
>> Rterm.exe while it lasted -- forces you to learn code you usually take for
>> granted in the windows environment. ;O)
>>
>> Regards,
>> Jesse A. Canchola
>>
>> Biostatistician III
>> Bayer Healthcare, Diagnostics Division
>> Berkeley, California USA
>>
>>
>>
>>
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> 
> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Mon Oct 30 11:07:43 2006

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