search for: y1ts

...ning this code: x<-data.frame (a=c(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22),b=c(1,5,2,7,4,3,5,6,8,2,2,7,6,4,2,8,5,8,2,3,7,3)) y1<-data.frame(a=c(9,10,11,12,13,14,15),b=c(1,8,5,0,5,3,4)) y2<-data.frame(a=c(17,18,19,20,21,22),b=c(1,2,2,3,7,0)) xts <- ts(x$b,start=x$a[1]) y1ts <- ts(y1$b,start=y1$a[1]) y2ts <- ts(y2$b,start=y2$a[1]) xaxislabels_1 <- c('M','V','A','F','K','G','V','W','T','Q','A','F','W','K','A','T','V','T'...

Hello everybody I'm trying to write a simple version of matlab's "quiver". The idea is that I have fluid with velocity defined on a grid. I have a matrix of x-components of velocity and a matrix of y-components and I want to see the overall flow pattern. (I work with 2D fluid mechanics problems). My first-stab function is below: quiver <- function(u,v,scale=1) # first