Re: [Rd] Silently loading and Depends: versus NAMESPACE imports

From: Suraj Gupta <surajg_at_gmail.com>
Date: Fri, 24 Feb 2012 12:48:14 -0500

Correct, nothing happens in terms of startup messages. No messages are shown.

library( my package ) # Performance Analytics message shown search() # PerformanceAnalytics is not in the search list since its in my Imports, not Depends
suppressPackageStartupMessages**( library("PerformanceAnalytics"**)) # no message are shown
search() # PerformanceAnalytics is now in the seach list beneath R_Global as expected

2012/2/24 Uwe Ligges <ligges_at_statistik.tu-dortmund.de>

>
>
> On 24.02.2012 18:02, Suraj Gupta wrote:
>
>> Sorry, let me provide the details:
>> My package has a .onAttach function (not a .onLoad). The .onAttach
>> constructs a startup message and delivers it via packageStartupMessage().
>> I've pasted the code below. My package has a number of other packages
>> in Depends and Imports. Some of the packages in Imports have startup
>> message (not R message, but package specific messages).
>>
>> For example I have PerformanceAnalytics in Imports and it shows:
>> "Econometric tools for performance and risk analysis.
>> ..."
>>
>
>
> And nothing happenms once you start it via
>
> suppressPackageStartupMessages**( library("PerformanceAnalytics"**))
>
> right?
>
> Uwe Ligges
>
>
>> googoleVis shows:
>> "Please read the Google Visualisation& Maps API Terms of Use
>>
>> before you use the package:
>> ..."
>>
>> my .onAttach is pretty simple:
>> .onAttach<- function(...)
>> {
>> mylib = dirname( system.file( package = "spear" ) )
>> ver = packageDescription( "spear" , lib = mylib )$Version
>> builddate = packageDescription( "spear" , lib = mylib )$Date
>> startupMessage = ""
>> startupMessage = paste( startupMessage , "\n\n\n" , sep = "" )
>> startupMessage = paste( startupMessage ,
>> "-----------------------------**------------------------------**
>> ------------------------------**---------------------------\n"
>> , sep = "" )
>> startupMessage = paste( startupMessage , "SPEAR\n" , sep = "" )
>> startupMessage = paste( startupMessage , paste( "(Version " , ver , ",
>> built: " , builddate , ")\n\n" , sep = "" ) , sep = "" )
>> startupMessage = paste( startupMessage , "MY MESSAGE HERE...left out
>> for brevity" , sep = "" )
>> packageStartupMessage( startupMessage )
>> }
>>
>>
>>
>>
>>
>>
>> On Fri, Feb 24, 2012 at 8:33 AM, Dirk Eddelbuettel<edd_at_debian.org>
>> wrote:
>>
>>
>>> On 24 February 2012 at 00:27, Suraj Gupta wrote:
>>> | I don't think that is it. My startup message is currently in .onAttach
>>> and I
>>> | still see startup message from packages that I have moved from Imports
>>> to
>>> | Depends.
>>> | Dirk?
>>>
>>> There are / were are few issues intertwined in my case, and yours may
>>> differ:
>>>
>>> - are the messages from your code / packages and you startup messages ?
>>>
>>> - are they from imported packages ?
>>>
>>> - are they from R (reported 'foo being shadowed' or 'generic bar
>>> defined')
>>>
>>> In my case a combination of using .onAttach and .onLoad (instead of just
>>> .onLoad) together with import directives in a NAMESPACE file solved the
>>> issue, as had been suggested on this list.
>>>
>>> Dirk
>>>
>>> --
>>> "Outside of a dog, a book is a man's best friend. Inside of a dog, it is
>>> too
>>> dark to read." -- Groucho Marx
>>>
>>>
>> [[alternative HTML version deleted]]
>>
>>
>> ______________________________**________________
>> R-devel_at_r-project.org mailing list
>> https://stat.ethz.ch/mailman/**listinfo/r-devel<https://stat.ethz.ch/mailman/listinfo/r-devel>
>>
>

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