[Rd] Start-up messages when Importing from a package

From: Mauricio Zambrano-Bigiarini <mauricio.zambrano_at_jrc.ec.europa.eu>
Date: Fri, 22 Jul 2011 09:59:39 +0200


Dear List,

I'm building a package that uses 2 functions of the 'sp' package, and I declared them in my NAMESPACE file as follow:

importFrom("sp", proj4string, coordinates)

The package is built without any problem, but when I load the package, I get the following message:

"

Loading required package: sp

         Note: polygon geometry computations in maptools
         depend on the package gpclib, which has a
         restricted licence. It is disabled by default;
         to enable gpclib, type gpclibPermit()

Checking rgeos availability as gpclib substitute: TRUE
"

However, if I only load the 'sp' package (in a different R session), I don't get any warning message.

Is there any way I can prevent the warning message appears when I load my package ?

Thanks in advance for any help,

Mauricio Zambrano-Bigiairni

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