Dear R-users,
I'd like to plot a three-dimensional surface and at the meantime I'm using
an array. I would like to have the values of my first matrix in the heights
of the plot and the colors of the single facet taking into account the
second matrix.
I hope that the next code will help all of you to understand better my
issue,
Have you read ?persp carefully? Have you looked at the examples in demo(persp)? Where is the problem?
Thanks in advance, Giancarlo ############################ ## creating my array m1 <- runif(30,min=1, max=10) m2 <- c(rep(0,12), rep(1,5), rep(0,3), rep(1,30-12-5-3)) mm <- array(c(m1,m2), dim=c(6,5,2))
## colors colo <- c("red", "blue")
## axis x <- 1:6 y <- 1:5 z <- mm[,,1] z1 <- mm[,,2]
## surface with heights and colors ## related to the first matrix (no good)
persp(x, y, z, theta = 30, phi = 30, expand = 0.5, col = colo,
ltheta = 120, ticktype = "detailed",
xlab = "X", ylab = "Y", zlab = "values" )
Use something like col = colo[mm[-1,-1,2]+1] instead of col=colo. Note that the color matrix must be (m-1)x(n-1) if z is m x n !!!
Uwe Ligges
## surface with heights and colors ## related to the second matrix (no good as well)
persp(x, y, z1, theta = 30, phi = 30, expand = 0.5, col = colo,
ltheta = 120, ticktype = "detailed",
xlab = "X", ylab = "Y", zlab = "values" )
############################
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