Plot conditional color with NA data
问题 I have a data frame in R that has 2 numeric fields, 1 of these fields can contain NA values. I want to plot the first field and base the col off if the second field is NA or not. CurrentBackLog = as.data.frame(list(DaysSinceCreted=c(34,50,22,6),DaysSinceReady=c(NA,10,22,NA))) This only shows the items where DaysSinceReady is NOT NA... plot(CurrentBackLog$DaysSinceCreated, main = 'Days Since Created by Ticket', ylab = 'Days Since Created', pch = 15, col = ifelse(CurrentBackLog$DaysSinceReady>1