[R] Question on Variabeles

David Winsemius dwinsemius at comcast.net
Sat Mar 7 23:30:10 CET 2009

I fear that you are looking for a symbolic algebra system, and R is  
not that sort of platform. If I am correct and you still want to  
access a symbolic algebra system from R, then you should look at YACAS  
and the interface to it, Ryacas.

David Winsemius

On Mar 7, 2009, at 9:52 AM, David1234 wrote:

> Hi everyone,
> Im quite new to R an I have the following Question:
> I would like to define Variables which I can add and multiply etc.  
> and that
> R can simplyfy the terms.
> The variables should stand for integers.
> For example I would like to have an entry in an array with  
> variable   z
> and if I  add    b+z    the field should now contain 2z+b.  Or if  
> the field
> contains   1    and I add    z    the field should contain 1+z.
> How can I solve this problem?
> I tried to set z=integer and then for example matrix[1,1]=i
> But this does only work if I assign a value for z first.
> I am very grateful for any help.
> Thank you very much!
> David
> -- 
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David Winsemius, MD
Heritage Laboratories
West Hartford, CT

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