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I am working on a project to create stringlines with GTFS feeds. Given the visual complexity of these plots, I am hoping to simplify their panel grids as much as possible while still making them visually rich. As such, I was wondering whether it was possible to convert the minor gridlines in a ggplot object to tick marks on the horizontal grid lines, as is done in some professional stringline softwares (eg. https://metra.com/newsroom/how-metra-schedules-are-made).

Thanks in advance!

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transitmapper
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  • I don't think this can be done automatically (e.g., via `theme()`), I suspect you'll need to generate the ticks manually (i.e., `geom_segment`) and disable minor gridlines in the theme – r2evans Jun 29 '23 at 16:26
  • Perhaps this helps. https://stackoverflow.com/questions/14490071/adding-minor-tick-marks-to-the-x-axis-in-ggplot2-with-no-labels – Jon Spring Jun 29 '23 at 21:34

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