R help - Aug 2012 - plotting Kaplan Meier using ggplot2 returns class function error

Hi list
I am running this ggplot2 R code:
http://www.r-bloggers.com/an-enhanced-kaplan-meier-plot/

with its graphical output looks like this:
http://statbandit.files.wordpress.com/2011/03/rstudio-v79384.pdf


It gives me this error:
ggplot2 doesn't know how to deal with data of class function

I looked around seems like it's a common problem, but haven't found a
solution.
Thanks,
Mike

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On Aug 22, 2012, at 12:53 PM, C W wrote:
> Hi list
> I am running this ggplot2 R code:
> http://www.r-bloggers.com/an-enhanced-kaplan-meier-plot/
>
> with its graphical output looks like this:
> http://statbandit.files.wordpress.com/2011/03/rstudio-v79384.pdf
>
>
> It gives me this error:
> ggplot2 doesn't know how to deal with data of class function
>
> I looked around seems like it's a common problem, but haven't found
a
> solution.
You should read the comments on that blog page. That question was  
already posed.

-- 
David Winsemius, MD
Alameda, CA, USA