[R] Change class of elements in list

[David Winsemius]

On Dec 26, 2012, at 4:44 AM, Robin Corrià wrote:

>
> Dear R users,
> I have a list of objects of type "im"
>> mylist$sp1
> $sp2
> $sp3
>
> and I want to convert them to a list of objects of class  
> "SpatialGridDataFrame"
> This works for a single object of class "im":
> a <- mylist$sp1
> b <- as(a, "SpatialGridDataFrame")

An an identical question from someone with a user name of "rob" was  
posted to StackOverflow.
>
> Then I want to write each element in the new list as a TIFF file,  
> with the name of the elements in the list.
> This also works for a single object in package "rgdal":
> writeGDAL(b, "sp1.TIFF")
>

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-- 
David Winsemius, MD
Alameda, CA, USA