Dear R-helper,
Is there any thing that I am doing wrong in the following codes:
> norm.cop <- normalCopula(0.5)
> persp(norm.cop, dcopula)
The last command produces what follows
Error in persp(x, y, z, xlim, ylim, zlim, theta, phi, r, d, scale,
expand, :
invalid 'x' argument
In addition: Warning messages:
1: no non-missing arguments to min; returning Inf
2: no non-missing arguments to max; returning -Inf
3: no non-missing arguments to min; returning Inf
4: no non-missing arguments to max; returning -Inf
5: is.na() applied to non-(list or vector) in: is.na(x)
6: no non-missing arguments to min; returning Inf
7: no non-missing arguments to max; returning -Inf
I remember that I tried the same two commands exactly the way they
appear above and I had the surface drawn properly. Does anyone have an
idea what this could possibly mean?
thanks,
Dominique
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