From: Tom Lenaerts <tlenaert_at_ulb.ac.be>

Date: Wed 12 Oct 2005 - 06:15:11 EST

Tom Lenaerts (tlenaert at ulb.ac.be) http://www.tomlenaerts.tk/

Postdoc Researcher @ IRIDIA-Universite Libre de Bruxelles-Belgium Guest Professor @ DINF-Vrije Uiversiteit Brussel-Belgium

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Oct 12 06:21:00 2005

Date: Wed 12 Oct 2005 - 06:15:11 EST

Hello,

Using the following code i want to make a level or contourplot of some data that I produced

library(grid);library(lattice);

mydata <- read.table("avgee.dat");

mymat <- as.matrix(mydata);

mymat <-t(mymat)

vals<-as.vector(mymat);

conc<-c(0.0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5);
a<- c(0.01, 0.025, 0.05, 0.075, 0.1, 0.25, 0.5, 0.75, 1, 2.5,5.0,
7.5,10, 25, 50, 75, 100);

grid<-expand.grid(x=conc, y=a);

levelplot(vals ~ conc * a, grid, region=TRUE, cuts=20);

When I do this get a blank output window and the following warnings

Warning messages:

1: longer object length

is not a multiple of shorter object length in: is.na(x) | is.na(y) 2: longer object length

is not a multiple of shorter object length in: id.na | is.na(var) 3: longer object length

a <-1:10

b <-11:20

j <- rnorm(100)

grid<-expand.grid(a = a, b = b)

levelplot(j~a*b, grid)

and it does not work.

Can anybody tell me what I'm doing wrong? Furthermore as you ight notice the data in a is in log-scale so I want the y-axis of the plot in logscale.

All the best

Tom

Tom Lenaerts (tlenaert at ulb.ac.be) http://www.tomlenaerts.tk/

Postdoc Researcher @ IRIDIA-Universite Libre de Bruxelles-Belgium Guest Professor @ DINF-Vrije Uiversiteit Brussel-Belgium

[[alternative text/enriched version deleted]]

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Oct 12 06:21:00 2005

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