[R] Table collumn to single var in lowcase

[Gabor Grothendieck]

Note that creating separate variables out of your data frame is
not really a good idea.  However, to answer your question:

# this puts it on the path
iris.lc <- iris
names(iris.lc) <- tolower(names(iris.lc))
attach(iris.lc)
search() # shows where its located
print(head(sepal.length))
detach() # get rid of it
search() # now its not there


# this puts them right in the global environment
for(nm in names(iris))
	assign(tolower(nm), iris[[nm]], .GlobalEnv)
ls()
print(head(sepal.length))
rm(list = tolower(names(iris))) # remove them

Also note ?with which is probably preferred:

iris.lc <- iris
names(iris.lc) <- tolower(names(iris.lc))
with(iris.lc, {
  print(head(sepal.length))
  print(head(sepal.length+1))
})



On 6/2/06, Milton Cezar <miltinho_astronauta at yahoo.com.br> wrote:
> Dear All,
>
>  I have read a table using
>      DataTABLE <- read.table("mytable.txt, header=T)
>
>  And get the following data structure
>       Var1  VAR2   VaR3  Var4 ...
>
>  How can I list all collumn names (in lowcase) and create variables from table collumns. By hand I do
>      var1 <- DataTABLE$Var1
>      var2 <- DataTABLE$VAR2
>      var3 <- DataTABLE$VaR3
>      var4 <- DataTABLE$Var4
>
>  Unfortunatelly these data come as an output from other program and the data file have about 80 collumns.
>
>  Thanks in advance!
>
>  miltinho
>
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