readSDML: Read StatDataML Files

Description

Read a StatDataML file and create a corresponding R object.

Usage

readSDML(file="", text=NULL, validate=FALSE, read.description=FALSE)

Arguments

file

the StatDataML file to be read.

text

a string containing StatDataML code (if no file is specified).

validate

logical, should file be validated using the DTD specified in file?

read.description

logical, should the description tag in file be read?

Value

a data object with an additional SDMLdescription attribute

Details

For details on the StatDataML format see the proposal.

Examples

Run this code

library(XML)

# write/read vector with names
a <- 1:15
names(a) <- paste("n", 1:15, sep="")
writeSDML(a, "testvec.xml")
b <- readSDML("testvec.xml")
cat("a is equal b :", all.equal(a,b), "")


# write/read a matrix
A <- matrix(1:16, ncol=4)
rownames(A) <- paste("row", 1:4, sep="")
colnames(A) <- paste("col", 1:4, sep="")
writeSDML(A, "testmat.sdml")
B <- readSDML("testmat.sdml")
cat("A is equal B :", all.equal(A,B), "")

# write/read a data.frame
data(iris)
writeSDML(iris, "iris.sdml")
irisSDML <- readSDML("iris.sdml")
cat("iris is equal irisSDML: ", all.equal(iris,irisSDML), "")

# write/read a ts object
data(airmiles)
writeSDML(airmiles, "air.sdml")
airSDML <- readSDML("air.sdml")
cat("airmiles is equal airSDML: ", all.equal(airmiles,airSDML), "")

# write/read the islands data
data(islands)
writeSDML(islands, "islands.sdml")
islandsSDML <- readSDML("islands.sdml")
cat("islands is equal islandsSDML: ", all.equal(islands,islandsSDML), "")