Can someone explain me why in the second example, only one label is shown ?
Thanks a lot Marc atT <- structure(c(1672520400, 1675198800, 1677618000, 1680296400, 1682888400, 1685566800, 1688158800, 1690837200, 1693515600, 1696107600, 1698786000, 1701378000, 1704056400, 1706734800, 1709240400, 1711918800, 1714510800, 1717189200, 1719781200, 1722459600, 1725138000, 1727730000, 1730408400, 1733000400, 1735678800), class = c("POSIXct", "POSIXt"), tzone = "Asia/Riyadh") # Work as expected plot(x = atT, y=rep(1, length(atT)), xaxt="n") axis(side = 1, at=atT, labels = as.character(seq_along(atT))) # Only first label is shown plot(x = atT, y=rep(1, length(atT)), xaxt="n") axis(1, at=atT, label=c("Jan-2023", "", "", "", "", "", "Jul-2023", "", "", "", "", "", "Jan-2024", "", "", "", "", "", "Jul-2024", "", "", "", "", "", "Jan-2025"), cex.axis=0.8) # All labels are shown... but not elegant ! plot(x = atT, y=rep(1, length(atT)), xaxt="n") for (i in seq_along(atT)) { axis(1, at=atT[i], label=c("Jan-2023", "", "", "", "", "", "Jul-2023", "", "", "", "", "", "Jan-2024", "", "", "", "", "", "Jul-2024", "", "", "", "", "", "Jan-2025")[i], cex.axis=0.8) } > R.version _ platform aarch64-apple-darwin20 arch aarch64 os darwin20 system aarch64, darwin20 status Patched major 4 minor 5.0 year 2025 month 05 day 16 svn rev 88216 language R version.string R version 4.5.0 Patched (2025-05-16 r88216) nickname How About a Twenty-Six ------------------------------------------------------------------------ *Marc Girondot, Pr* Laboratoire Ecologie, Société, Evolution Equipe de Processus Ecologiques et Pressions Anthropiques CNRS, AgroParisTech et Université Paris-Saclay, UMR 8079 91190 Gif-sur-Yvette, France Tel: +33 (0)1.69.15.72.30 Mobile: +33 (0)6.20.18.22.16 e-mail: marc.giron...@universite-paris-saclay.fr marc.giron...@gmail.com Web: http://hebergement.universite-paris-saclay.fr/marcgirondot/ [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide https://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.