[R] use list elements to subtract values from the dataframe

[Dirkheld]

Hi,

I have a dataframe wf existing of a header with different labels and beneath
the values of those labels :
wf:
label1  label2  ...
0,45    0,21
0,10    0,45 
....      ....

I have a list
fl <- c("label2","label3",..)

Isn't possible to use the list elements in the list in order to subtract
values from the dataframe? like :
wf$fl[[1]] 
When I do in R I get :NULL
fl[[1]] gives  "label2"  so no problem here...

While wf$label1 works fine.



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