User has a set of objects and would like to subdivide them into different classes so that he can apply different methods to each class.
 

Change the class() of a Spotfire S+ object

Product: TIBCO Spotfire S+ Version: All supported versions OS: All supported operating systems --------------------

You can achieve this class change by using the new() function in Spotfire S+.  Here is an example of changing a data.frame object to a new class called "Alg".

##########################
# Create your new class
> setClass("Alg", representation(x="data.frame"))
> getClass("Alg")

Slots:
            x
"data.frame"

# Create a data.frame object
ngs <- data.frame(a=letters[1:5], b=rnorm(5))
> ngs
  a          b
1 a  0.2036561
2 b  1.9164974
3 c  0.7680376
4 d -1.2622936
5 e  0.5144450

# Confirm the class
> class(ngs)
[1] "data.frame"

# Write a simple function to change the class
dfToAlg <- function(object) {new("Alg", x=object)}

# Run the function on your object
# Be sure to assign it back to your original object
ngs <- dfToAlg(ngs)
> ngs
  a          b
1 a  0.2036561
2 b  1.9164974
3 c  0.7680376
4 d -1.2622936
5 e  0.5144450

# Confirm the class change
> class(ngs)
[1] "Alg"

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