###--- >>> `data.frame' <<<----- Data Frames

	## alias	 help(data.frame)
	## alias	 help(as.data.frame)
	## alias	 help(is.data.frame)
	## alias	 help(row.names)
	## alias	 help(row.names<-)
	## alias	 help(print.data.frame)
	## alias	 help(plot.data.frame)
	## alias	 help(as.data.frame.AsIs)
	## alias	 help(as.data.frame.character)
	## alias	 help(as.data.frame.complex)
	## alias	 help(as.data.frame.data.frame)
	## alias	 help(as.data.frame.default)
	## alias	 help(as.data.frame.factor)
	## alias	 help(as.data.frame.integer)
	## alias	 help(as.data.frame.list)
	## alias	 help(as.data.frame.logical)
	## alias	 help(as.data.frame.matrix)
	## alias	 help(as.data.frame.model.matrix)
	## alias	 help(as.data.frame.numeric)
	## alias	 help(as.data.frame.ordered)
	## alias	 help(as.data.frame.ts)
	## alias	 help(as.data.frame.vector)
	## alias	 help(xpdrows.data.frame)

##___ Examples ___:

L3 <- LETTERS[1:3]
str(d <- data.frame(cbind(x=1, y=1:10), ch=sample(L3, 10, repl=TRUE)))
str(     data.frame(cbind(  1,   1:10),    sample(L3, 10, repl=TRUE)))
is.data.frame(d)
all(1:10 == row.names(d))# TRUE (coercion)

## Keywords: 'classes', 'methods'.


