On Tue, Aug 28, 2012 at 7:34 PM, Duncan Murdoch
<murdoch.dun...@gmail.com> wrote:
> Assign a class to the object, and write a print method for it.
>
> For example, this doesn't quite do what you want, but it's a start:
>
> print.noattributes <- function(x, ...) {
> attributes(x) <- NULL
> print(x)
> }
>
> class(x) <- "noattributes"
> x
>
> It loses some attributes that you probably want to keep (e.g. the names),
> but otherwise works on your example.
>
I've already tried this solution but that's exactly the trouble with
this approach. Do this on a data.frame and loses important
information.
I came up with a modified version of the above:
print_noattr <- function(x, keep.some=T, ...){
if(keep.some) xa <- attributes(x)[c('names', 'row.names', 'class')]
attributes(x) <- NULL
if(keep.some) attributes(x) <- xa
print(x)
}
> x <- dlply(iris, .(Species), function(x) describe(x[, 'Sepal.Length']))
> print_noattr(x)
$setosa
x[, "Sepal.Length"]
n missing unique Mean .05 .10 .25 .50 .75
50 0 15 5.006 4.40 4.59 4.80 5.00 5.20
.90 .95
5.41 5.61
4.3 4.4 4.5 4.6 4.7 4.8 4.9 5 5.1 5.2 5.3 5.4 5.5 5.7 5.8
Frequency 1 3 1 4 2 5 4 8 8 3 1 5 2 2 1
% 2 6 2 8 4 10 8 16 16 6 2 10 4 4 2
$versicolor
x[, "Sepal.Length"]
n missing unique Mean .05 .10 .25 .50 .75
50 0 21 5.936 5.045 5.380 5.600 5.900 6.300
.90 .95
6.700 6.755
lowest : 4.9 5.0 5.1 5.2 5.4, highest: 6.6 6.7 6.8 6.9 7.0
$virginica
x[, "Sepal.Length"]
n missing unique Mean .05 .10 .25 .50 .75
50 0 21 6.588 5.745 5.800 6.225 6.500 6.900
.90 .95
7.610 7.700
lowest : 4.9 5.6 5.7 5.8 5.9, highest: 7.3 7.4 7.6 7.7 7.9
However this still feels like a hack, and the function should be
modified if the object in question contains some other crucial
attributes.
On Tue, Aug 28, 2012 at 7:44 PM, Peter Ehlers <ehl...@ucalgary.ca> wrote:
> It seems that class "listof" also works:
>
> class(x) <- "listof"
> x
>
This works great. Thanks.
Liviu
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