From julien.gagneur at embl.de  Fri Jan 27 11:02:01 2006
From: julien.gagneur at embl.de (julien.gagneur@embl.de)
Date: Fri, 27 Jan 2006 11:02:01 +0100 (CET)
Subject: [Rd] e1071: using svm with sparse matrices (PR#8527)
Message-ID: <20060127100201.321B2103DC@slim.kubism.ku.dk>

Full_Name: Julien Gagneur
Version: 2.2.1
OS: Linux (Suse 9.3)
Submission from: (NULL) (194.94.44.4)


Using the SparseM library (SparseM_0.66)
and the e1071 library (e1071_1.5-12)


I fail using svm method with a sparse matrix. Here is a sample example.

I experienced the same problem under Windows.



> library(SparseM)
[1] "SparseM library loaded"
> library("e1071")
Loading required package: class
> data(iris)
> attach(iris)
> M=as.matrix(iris[,1:4])
> Msparse=as.matrix.csr(M)
> Species=iris[,5]
> mod=svm(Msparse,Species)
Error in svm.default(Msparse, Species) : object "nac" not found



[Rd] e1071: using svm with sparse matrices (PR#8527)
julien.gagneur@embl.de