scale_x_date or maybe date_format has problems with some dates (e.g. 4-01-31) about scales HOT 5 CLOSED

It looks like the problem is happening because sometimes the breaks have negative years, and as.Date() doesn't handle these well.

x <- as.Date(c("0001-01-24", "0500-02-02"))
as.character(x)
# "0001-01-24" "0500-02-02"
as.Date(as.character(x))

# Minus 391 days gives negative year
as.character(x - 391)
# "-001-12-30" "0499-01-07"
as.Date(as.character(x - 391))
# Error during wrapup: character string is not in a standard unambiguous format

from scales.

A right, I forgot that I asked about this on r-help [1], but never got an answer.
In this case it is a bug in R?

[1] http://r.789695.n4.nabble.com/Date-object-and-origin-BC-tp4173163.html

from scales.

I just asked the same thing on r-devel, but no helpful replies yet.

https://stat.ethz.ch/pipermail/r-devel/2012-July/064398.html

It might be a "feature" instead of a bug, at least to the core R developers.

from scales.

Fixing this is going to be hard - I think it you could extract the necessary bits out of cut.Date() but it seems like a lot of work for little gain.

from scales.

Same problem, found solution here: https://www.r-bloggers.com/2021/09/error-in-character-string-is-not-in-a-standard-unambiguous-format/

from scales.