On second glance, while it works for 'stack', it doesn't appear to work for
'overlay':
> overlay(sapply(obs,get))
Error in function (classes, fdef, mtable) :
unable to find an inherited method for function "overlay", for signature
"list", "missing"
At this point, this may be more of a 'rast
Using David's examples:
do.call(stack, lapply(obs, get))
On Tue, Nov 16, 2010 at 4:04 PM, Kevin Ummel wrote:
> Sorry, I shouldn't have used 'sum' as an example; I am looking for a
> solution in the case of functions that do not result in simple vectors or
> matrices.
>
> The "real-world" examp
Thanks, David. That does, indeed, work. It didn't occur to me that a list would
do the job as an argument.
Thanks for the fix!
kevin
On Nov 16, 2010, at 6:58 PM, David Winsemius wrote:
>
> On Nov 16, 2010, at 1:04 PM, Kevin Ummel wrote:
>
>> Sorry, I shouldn't have used 'sum' as an example;
Sorry, I shouldn't have used 'sum' as an example; I am looking for a solution
in the case of functions that do not result in simple vectors or matrices.
The "real-world" example is something like the following using the 'raster'
package, though (I think) any command producing an S4 object could
On Nov 16, 2010, at 1:04 PM, Kevin Ummel wrote:
Sorry, I shouldn't have used 'sum' as an example; I am looking for a
solution in the case of functions that do not result in simple
vectors or matrices.
The "real-world" example is something like the following using the
'raster' package, th
Hi,
It would have been nice to see what you've tried.
Here is what I got (maybe not the easiest, but looks like it works)
a1 <- 1
a2 <- 2
obs <- objects(pattern=glob2rx("a?"))
sum(unlist(mget(obs, envir=.GlobalEnv)))
[1] 3
It also works with vectors:
a1 <- 1:10
a2 <- 11:20
sum(unlist(mget(obs,
On Nov 16, 2010, at 10:34 AM, Kevin Ummel wrote:
A bit embarrassed to post this seemingly trivial question, but I
can't find anything in the archive that's quite relevant:
a1=1
a2=2
obs=objects(pattern=glob2rx("a?"))
I want to utilize 'obs' as a function argument to produce something
lik
A bit embarrassed to post this seemingly trivial question, but I can't find
anything in the archive that's quite relevant:
a1=1
a2=2
obs=objects(pattern=glob2rx("a?"))
I want to utilize 'obs' as a function argument to produce something like:
sum(a1,a2)
Obviously, sum(obs) doesn't work, but I'
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