Hello, I am struggling to overcome following problem:
I have matrix Vf and matrix V, which both have 3 columns and I want to create a spline function basing on coordinates from this matrices (more precisely coordinates of function nr 1: x are taken from Vf[,1] and y are taken from V[,1] respectively), because function apply() base on 1 argument I made it in this way: Vspline<-matrix(0,nrow=2*n,ncol=K) Vspline<-rbind(Vf[,1:3],V[,1:3]) where n=5000 and it is number of rows in V and Vf matrices and then: FV<-apply(Vspline,2, function(z) splinefun(Vspline[1:n,z],Vspline[(n+1):(2*n),z], method="mono",ties=mean)) The problems is, that when I am running it, following error occurs: Error in xy.coords(x, y) : only 0's may be mixed with negative subscripts I was trying to run function apply replacing z with particular values, and it worked: FV<-apply(Vspline,2, function(z) splinefun(Vspline[1:n,1],Vspline[(n+1):(2*n),1], method="mono",ties=mean)) FV<-apply(Vspline,2, function(z) splinefun(Vspline[1:n,2],Vspline[(n+1):(2*n),2], method="mono",ties=mean)) FV<-apply(Vspline,2, function(z) splinefun(Vspline[1:n,3],Vspline[(n+1):(2*n),3], method="mono",ties=mean)) However it does not solve the problem, because I am not obtaining objects FV[[1]], FV[[2]] and FV[[3]]. Object FV[[1]] is overwritten. My questions are: Why I am obtaining such an error? Is there any function that works like apply, but enables me to use two matrices as input data? Thanks in advance for any help. Greetings, Michal -- View this message in context: http://n4.nabble.com/Usage-of-apply-function-with-two-matrices-tp1590442p1590442.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
