R help - May 2010 - Unexpected call to "require"

Colleagues

I am executing a length script in R (20K lines).  At one point, it
returns:
> Loading required package: tcltk
> Loading Tcl/Tk interface ... done
> Loading required package: Hmisc
> Loading required package: survival
> Loading required package: stats
> Loading required package: graphics
> Loading required package: splines
> Attaching package: 'Hmisc'
> 	The following object(s) are masked from package:survival :
> 	 untangle.specials 
> 	The following object(s) are masked from package:base :
> 	 format.pval,
> 	 round.POSIXt,
> 	 trunc.POSIXt,
> 	 units 
> Loading required package: R2HTML
This is not a problem but I am curious as to the source of the message.

The command "require" appears three times in my code, for chron, XML,
and SASxport.  When I test each of these (e.g., require("chron")) in a
new session of R, I don't receive the messages shown above.  But, the script
does return that message.

Does anyone recognize this specific message, i.e., what is triggering the
messages?

Thanks in advance.

Dennis


Dennis Fisher MD
P < (The "P Less Than" Company)
Phone: 1-866-PLessThan (1-866-753-7784)
Fax: 1-866-PLessThan (1-866-753-7784)
www.PLessThan.com

Its coming from the Hmisc startup.  For example, in a clean session (R
--vanilla) try this:

   library(survival)
   library(Hmisc)

Replacing the above call with this will suppress it:

   suppressPackageStartupMessages(library(Hmisc))

To track it down:

   debug(message)

and then run your script and step through each line in the debugger
until you see the message and then enter:

   sys.calls()

to see where you are.



On Wed, May 5, 2010 at 2:31 PM, Dennis Fisher <fisher at plessthan.com>
wrote:
> Colleagues
>
> I am executing a length script in R (20K lines). ?At one point, it returns:
>> Loading required package: tcltk
>> Loading Tcl/Tk interface ... done
>> Loading required package: Hmisc
>> Loading required package: survival
>> Loading required package: stats
>> Loading required package: graphics
>> Loading required package: splines
>> Attaching package: 'Hmisc'
>> ? ? ? The following object(s) are masked from package:survival :
>> ? ? ? ?untangle.specials
>> ? ? ? The following object(s) are masked from package:base :
>> ? ? ? ?format.pval,
>> ? ? ? ?round.POSIXt,
>> ? ? ? ?trunc.POSIXt,
>> ? ? ? ?units
>> Loading required package: R2HTML
>
> This is not a problem but I am curious as to the source of the message.
>
> The command "require" appears three times in my code, for chron,
XML, and SASxport. ?When I test each of these (e.g., require("chron"))
in a new session of R, I don't receive the messages shown above. ?But, the
script does return that message.
>
> Does anyone recognize this specific message, i.e., what is triggering the
messages?
>
> Thanks in advance.
>
> Dennis
>
>
> Dennis Fisher MD
> P < (The "P Less Than" Company)
> Phone: 1-866-PLessThan (1-866-753-7784)
> Fax: 1-866-PLessThan (1-866-753-7784)
> www.PLessThan.com
>
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