ggplot2 geom_line() to skip NA values
ggplot2, r
Solution
`geom_line` does make breaks for `NA`s in the `y` column, but it joins across `NA` values in the `x` column.
# Set up a data frame with NAs in the 'x' column
independant <- c(0, 1, NA, 3, 4)
dependant <- 0:4
d <- data.frame(independant=independant, dependant=dependant)
# Note the unbroken line
ggplot(d, aes(x=independant, y=dependant)) + geom_line()
I assume that your `NA` values are in your `as.POSIXlt(date)`. If so, one solution would be to map the columns with `NA` values to `y`, and then use `coord_flip` to make the `y` axis horizontal:
ggplot(d, aes(x=dependant, y=independant)) + geom_line() +
coord_flip()
Presumably your code would be:
ggplot(crew.twelves, aes(x=laffcu, y=as.POSIXlt(date)) + geom_line() +
coord_flip()
Problem
I have a data set that has multiple NA values in it. When plotting this data, ggplot's geom_line() option joins lines across the NA values. Is there any way to have ggplot skip joining the lines across NA values? Edit: A thousand apologies to all involved. I made a mistake in my manipulation of the data frame. I figured out my problem. My x axis was not continuous when I created a subset. The missing data had not been replaced by NAs, so the data was being linked because there were no NAs created in the subset between rows.