| readSDML {StatDataML} | R Documentation |
Read a StatDataML file and create a corresponding R object.
readSDML(file="", text=NULL, validate=FALSE, read.description=FALSE, ...)
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? |
... |
arguments passed to xmlTreeParse |
For details on the StatDataML format see the proposal.
a data object with an additional SDMLdescription attribute
David.Meyer@R-Project.org
see also writeSDML
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), "\n")
# 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), "\n")
# write/read a data.frame
data(iris)
writeSDML(iris, "iris.sdml")
irisSDML <- readSDML("iris.sdml")
cat(" iris is equal irisSDML: ", all.equal(iris,irisSDML), "\n")
# write/read a ts object
data(airmiles)
writeSDML(airmiles, "air.sdml")
airSDML <- readSDML("air.sdml")
cat(" airmiles is equal airSDML: ", all.equal(airmiles,airSDML), "\n")
# write/read the islands data
data(islands)
writeSDML(islands, "islands.sdml")
islandsSDML <- readSDML("islands.sdml")
cat(" islands is equal islandsSDML: ", all.equal(islands,islandsSDML), "\n")