Plotting lines with different "lenght" I am trying trying to plot a chart thar always have values from 01/01 of the beginning of the year till 31/12 of the end of the year. The thing is sometimes I will have NA or not values in one time series but not in the others. In the next code you can see two variables b (with a length of 138 of the current year) and b2019 (of the previous year) but I want to plot both b and b2019 in one chart with the X-axis from 01/01 to 31/12 without specifying the year. Can someone guide me with this: Code: library(PerformanceAnalytics) library(quantmod) library(tidyverse) library(tidyquant) loadSymbols("TSLA") a<-dailyReturn(TSLA,subset='2020') a2019<-dailyReturn(TSLA,subset='2019') b<-cumsum(a)*100 b2019<-cumsum(a2019)*100 plot(b, type = "l", lty = 1) lines(b2019, type = "l", lty = 4) Many thanks in advance [[alternative HTML version deleted]]