format
List of 8
$ axis.title : list()
..- attr(*, "class")= chr [1:2] "element_blank" "element"
$ axis.text : list()
..- attr(*, "class")= chr [1:2] "element_blank" "element"
$ axis.ticks : list()
..- attr(*, "class")= chr [1:2] "element_blank" "element"
$ axis.line : list()
..- attr(*, "class")= chr [1:2] "element_blank" "element"
$ panel.background: list()
..- attr(*, "class")= chr [1:2] "element_blank" "element"
$ panel.border : list()
..- attr(*, "class")= chr [1:2] "element_blank" "element"
$ panel.margin : list()
..- attr(*, "class")= chr [1:2] "element_blank" "element"
$ panel.grid : list()
..- attr(*, "class")= chr [1:2] "element_blank" "element"
- attr(*, "class")= chr [1:2] "theme" "gg"
- attr(*, "complete")= logi FALSE