R help - Jun 2007 - Using the object of character data type as the name of the slot

Dear all,

I have a character string object:
> chara
[1]  "The name of first slot"

and a list object:
> class( try1)
[1] "list"


what I want to do is to use the chara as a slot's name of "try1".

Of  course I could do it like:
> try1$"The name of first slot"  <- matrix("", 3, 4)
to create a slot of 3x4 matrix with the name "The name of first slot"

However, I would like to know how could I utilize the object chara , and to
use the characters it contains as the name of the slot of try1.


I appreciate for any suggesion. Thanks.



-- 
Lam C. Tsoi (Alex)
Medical University of South Carolina

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On 21/06/2007 4:07 PM, Alex Tsoi wrote:
> Dear all,
> 
> I have a character string object:
> 
>> chara
> [1]  "The name of first slot"
> 
> and a list object:
> 
>> class( try1)
> [1] "list"
> 
> 
> what I want to do is to use the chara as a slot's name of
"try1".
> 
> Of  course I could do it like:
> 
>> try1$"The name of first slot"  <- matrix("", 3,
4)
> 
> to create a slot of 3x4 matrix with the name "The name of first
slot"
> 
> However, I would like to know how could I utilize the object chara , and to
> use the characters it contains as the name of the slot of try1.
You can use

slot(try1, chara) <- matrix("", 3, 4)

as long as the slot name contained in chara really is a slot.

Duncan Murdoch