Rolf Turner wrote:

On 21/11/2008, at 10:13 AM, Steffy, Elizabeth A. wrote:

I got this error for this equation and i'm not sure what it means or how to fix it:

Error in S[index] = S[index - 1] + (dSi - dSo - SC) * dt :
  nothing to replace with

Does anyone know how to fix this?

    No.

PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

    Do you see the lines immediately above?

    Many people on the R-help list are very clever.  ***None***
    of them are telepathic.

No? I think she should ensure that index >= 2, and that her R version is from before September 2008.

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