[R] 3d plotting

From: Brad B <the13thday_at_yahoo.com>
Date: Tue, 18 Dec 2007 11:32:55 -0800 (PST)

I am trying to dp a 3d plot.
  I tried persp but my data is not a matrix.   the 3dplot function returns this error, (list) object cannot be coerced to 'double'   heres my code,
  td<-read.csv("td.csv", header=TRUE)
price<-read.csv("price.csv", header=TRUE) contractdate<-read.csv("contractdate.csv", header=TRUE) library(rgl)

  the 3 csv data files have the following format,   1

  basically I have 3 columns, x y and z that have 60000 rows (data points) I want to plot.            

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