Error using lm(z~x+y,data)
Peter Dalgaard BSA <p.dalgaard at biostat.ku.dk> writes:
tomsv193 at student.liu.se writes:
Hi!
I am fitting a plane to a surface:
This works excellent:
---------------------------------
x<-dataframe[,1]
y<-dataframe[,2]
z<-dataframe[,3]
data<-cbind(x,y,z)
# Fit plane to surface
result<-lm(z~x+y,data)
---------------------------------
But I need to rescale the x,y parameters. So:
-----------------------------
x<-dataframe[,1]*149
y<-dataframe[,2]*149
z<-dataframe[,3]
data<-cbind(x,y,z)
# Fit plane to surface
result<-lm(z~x+y,data)
----------------------------------
And surprisingly this does not work. Error message is:
Error in eval(attr(formula, "variables"), data, env) :
sys.frame: not that many enclosing functions
Why does this happen?
I can confirm this, but not understand it. Certainly looks like a bug.
Ah, got it! The data= argument needs to be a dataframe and you have a matrix. Still looks weird, though.
O__ ---- Peter Dalgaard Blegdamsvej 3 c/ /'_ --- Dept. of Biostatistics 2200 Cph. N (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._