about integration of a library into package creation

i follow your recommendation writing this :
in the description file
Depends: R (>= 2.3), quadprog, ade4, spdep
Imports: quadprog, ade4, spdep

in the namespace file
useDynLib(quadprog)
useDynLib(spdep)
useDynLib(ade4)
importFrom("ade4", "dist.dudi")
importFrom("quadprog", "solve.QP")
importFrom("ade4", "mstree")
importFrom("ade4", "neig2mat")
importFrom("ade4", "dist.dudi")
importFrom("ade4", "dudi.pca")
importFrom("ade4", "dudi.coa")
importFrom("spdep", "knearneigh")

and the result of compiling is :
 preparing package svcR for lazy loading
Erreur dans loadNamespace(ns, lib.loc) : le package 'quadprog' n'a pas 
d'espace de noms
Ex?cution arr?t?e
make: *** [lazyload] Error 1
*** Installation of svcR failed ***

it says that quadprog has not a namespace
perhaps it is due to location of quadprog.dll
i have put it into inst/src directory

thank for help

Nicolas

Uwe Ligges a ?crit :

Nicolas Turenne wrote:

your answer is correct after checking some doc
but examples are rare

when i write in the description file
Depends: R (>= 2.3), quadprog, ade4, spdep
and in the namespcae file

useDynLib(quadprog)
useDynLib(spdep)
useDynLib(ade4)
importFrom("dist.dudi", "ade4")

Please do it the right way (package name first!):

importFrom("ade4", "dist.dudi")

Uwe Ligges

importFrom("solve.QP", "quadprog")
importFrom("mstree", "ade4")
importFrom("neig2mat", "ade4")
importFrom("dist.dudi", "ade4")
importFrom("dudi.pca", "ade4")
importFrom("dudi.coa", "ade4")
importFrom("knearneigh", "spdep")

i obtain :
Namespace dependencies not required:
  dist.dudi dudi.coa dudi.pca knearneigh mstree neig2mat solve.QP

if i delete the importFrom lines
i get an error about "loading / namespace not succesful" for svcr

i think the solution is not far but it is disturbing

thank for help

---
Nicolas


Duncan Murdoch a ?crit :

On 6/12/2006 12:25 PM, Nicolas Turenne wrote:

in that sense, it is useless to load the library from R source code 
making my package
which is supposed to include it and load it

so if i understand the R philosophy it is not possible to load dll 
from outside ;
the user has to load my package  and manually has to load the 
necessary libraries
each time he has to use my library,  right ?

Not at all.  When set up correctly, the user should just need to say
library(svcR) and all necessary packages and DLLs will be loaded.

The way to specify other packages is through the "Depends" line in 
the DESCRIPTION file, and/or the import/importFrom lines in your 
NAMESPACE file.

Duncan Murdoch

-- 
Nicolas

Prof Brian Ripley a ?crit :

And also to load  the package, maybe with

rterm R_DEFAULT_PACKAGES=NULL

library(svcR)

as these messages often indicate missing package dependencies.

* checking package subdirectories ... WARNING
Subdirectory 'src' contains no source files.
* checking R files for syntax errors ... OK
* checking R files for library.dynam ... OK
* checking S3 generic/method consistency ... WARNING
Erreur : le chargement du package / espace de noms a echoue' 
pour 'svcR'
Sequence d'appel :
2: stop(gettextf("package/namespace load failed for '%s'",
libraryPkgName(packag
e)),
       call. = FALSE, domain = NA)
1: library(package, lib.loc = lib.loc, character.only = TRUE, 
verbose =
FALSE)
Execution arrete'e
See section 'Generic functions and methods' of the 'Writing R 
Extensions'
manual.
* checking replacement functions ... WARNING
Erreur : le chargement du package / espace de noms a echoue' 
pour 'svcR'
Sequence d'appel :
2: stop(gettextf("package/namespace load failed for '%s'",
libraryPkgName(packag
e)),