[R] help with maps : center on the dateline

Hi, I'm trying to plot a map of the pacific ocean, centered on the dateline, using the maps package. library(maps) # Basic library to draw maps library(mapdata)# Library with specialized maps library(mapproj) map(database = world, fill = TRUE, col = 1, plot = TRUE,add=F, xlim = c(120,300),

[R] problem with which

Hi, I'm having trouble with the which or the seq function, I'm not sure. Here's an example : lat=seq(1,2,by=0.1) lat [1] 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 which(lat==1) [1] 1 which(lat==1.1) [1] 2 which(lat==1.2) [1] 3 which(lat==1.3) [1] 4 which(lat==1.4) [1] 5