hello:
I am very confused when it comes to list operations in
R.
I seek help in the following problem.
I have two different vectors
myIDs - a character vector with no names to their
elements
x2 - another character vector derived from unlisting a
list where an element has both a name and value.
I am not happy the way x2 is with names and values to
every element.
> myIDs[1:10]
[1] "54898" "7083" "7031" "7083" "4175" "4605"
"7494" "5111" "960" "990"
>> class(myIDs)
[1] "character"
Similarly x2 objects is
> x2[1:4]
1000_at 1001_at 1002_f_at 1003_s_at
"5595" "7075" "1557" "643"
> class(x2)
[1] "character"
I am not happy the way x2 is right now. I do not want
names of the elements. I want to write to another
object x3 that has only values of the elements and not
their names.
How can I do that?
I can give a [[]] to get the value of element.
> x2[[1]]
[1] "5595"
When I try to give a range of numbers:
> x2[[1:4]]
Error in x2[[1:4]] : attempt to select more than one
element
Frustrated, I wanted to create another object z, and
append all values of x2 to z.
> z = c()
> for(i in 1:length(x2)){
+ append(z,x2[[i]],after=length(z))}
> length(z)
[1] 0
now z is empty. this is really frustrating. Can
someone help me please how to deal in this situation.
Thanks
Sri
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