As Duncan Murdoch pointed out, the example data frame that you provided
doesn't give very interesting results (all the shock values are zero), so
I created a different shock variable for illustration. I suggest using
the interp() function in the R package akima.
df <- structure(list(c = 1:6, z = c(0.45450237, 0.02663337,
-2.08444556, -0.12715275, 0.6706636, -0.73540081),
shock = c(0L, 0L, 0L, 0L, 0L, 0L)),
.Names = c("c", "z", "shock"),
class = "data.frame", row.names = c(NA, -6L))
df$shock2 <- df$c + df$z + df$z^2
library(akima)
contour(interp(df$c, df$z, df$shock2))
Jean
Akhil dua <akhil.dua...@gmail.com> wrote on 07/19/2012 01:01:54 AM:
> Hello every one
> can any one tell me how to draw contour with this data set
>
>
> c z shock
> 1 0.45450237 0
> 2 0.02663337 0
> 3 -2.08444556 0
> 4 -0.12715275 0
> 5 0.67066360 0
> 6 -0.73540081 0
>
> I want to draw contour for shock i.e my z matrix is shock
>
> when I am applying contour its giving me error : increasing x and y are
> expected
> when I am applying contourplot its giving me error : no applicable
method
> for contour plot applied to an object of class "c('double','numeric')"
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