Hi R User,
I am wonedring how I can extract a part of objects from list.
For example
> str(out1970)
List of 8
$ comm : num [1:16, 1:57] 1 1 1 1 1 1 1 1 1 1 ...
..- attr(*, "dimnames")=List of 2
.. ..$ : chr [1:16] "H_s5" "H_s1" "R_s2" "H_s2" ...
.. ..$ : chr [1:57] "Pimephales.promelas" "Semotilus.atromaculatus"
"Rhinichthys.atratulus" "Pimephales.notatus" ...
$ u : num [1:16, 1:57] 0 0 0 0 0 0 0 0 0 0 ...
..- attr(*, "dimnames")=List of 2
.. ..$ : chr [1:16] "H_s5" "H_s1" "R_s2" "H_s2" ...
.. ..$ : chr [1:57] "Pimephales.promelas" "Semotilus.atromaculatus"
"Rhinichthys.atratulus" "Pimephales.notatus" ...
$ r : Named num [1:16] 0.0312 0.0938 0.1562 0.2188 0.2812 ...
..- attr(*, "names")= chr [1:16] "H_s5" "H_s1" "R_s2" "H_s2" ...
$ c : Named num [1:57] 0.00877 0.02632 0.04386 0.0614 0.07895 ...
..- attr(*, "names")= chr [1:57] "Pimephales.promelas"
"Semotilus.atromaculatus" "Rhinichthys.atratulus" "Pimephales.notatus" ...
$ p : num 1.59
$ fill : num 0.294
$ statistic: num 11.4
$ smooth :List of 2
..$ x: num [1:51] 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 ...
..$ y: num [1:51] 1 0.887 0.826 0.776 0.732 ...
- attr(*, "class")= chr "nestedtemp"
I wanted to extract the value $ x and $y from List of 2 (smooth), but I could
not extarct it. I used following functions
> sapply(out1970$smooth, "[[",1)
x y
0 1
> sapply(out1970$smooth, "[[",2)
x y
0.0200000 0.8869147
But when I tried to extarct all value using
>sapply(out1970$smooth, "[[",1:51)
Error in FUN(X[[1L]], ...) : attempt to select more than one element
would you mind to give some suggestions in how I get the value for all (1:51) ?
thanks
KG
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