[R] Matrix 3d plot
Duncan Murdoch
murdoch.duncan at gmail.com
Tue Jul 5 19:46:21 CEST 2011
On 05/07/2011 1:36 PM, петрович wrote:
> I have a problem with a 3d plot, suppose we have a matrix like this:
>
> v1 v2 v3 v4
> jan-2010 0.5 0.25 0.25 0.3
> feb-2010 0.35 0.12 0.12 0.4
> mar-2010 0.15 0.25 0.25 0.1
>
> and i want to plot this matrix in 3d plot where x-axis is the first
> column of the matrix above, y - axis is the first row of the matrix
> above and the z-axis is the numbers corresponding, so
> z(jan-2010,v3)=0.25
>
> I was trying with persp() but i see that in this function z is a
> vector but in my case is a matrix, so i receive an error message
> I think this sound no so hard, but actually i couldn´t find a function
> doing this, is there actually such a function?
persp() handles exactly the case you describe, but it wants numeric x
and y. You didn't show what you tried, but this works:
x <- 1:3
y <- 1:4
z <- matrix(rnorm(12), nrow=3)
persp(x,y,z, col="red")
It's not a very useful plot with the random data; it might be better
with yours.
Duncan Murdoch
More information about the R-help
mailing list