Can shadow_mark be made to work with transition_manual?

[AdrianAllen1977]

Trying to map some epi data (disease location) in which it would be good to see all previously mapped points in relation to new points. Shadow_mark doesn't seem to be working for transition_manual.

Thanks

[lgaborini]

Any updates? It could be a workaround to #481:

p <- mtcars |> 
   ggplot(aes(wt, mpg)) +
   geom_point(
      aes(
         color = gear
      ),
      size = 2
   ) +
   transition_manual(
      frames = gear
   ) +
   shadow_mark(
      past = TRUE,
      future = TRUE,
      color = "gray20"
   ) +
   labs(
      title = "Frame {frame}/{nframes}"
   )

n_states <- length(unique(mtcars$gear))
n_states

a <- animate(
   plot = p,
   nframes = n_states,
   fps = 1,
   detail = 1,
   start_pause = 0,
   end_pause = 0,
   rewind = FALSE
)

a

This is the error:

a <- animate(
   plot = p,
   nframes = n_states,
   fps = 1,
   detail = 1,
   start_pause = 0,
   end_pause = 0,
   rewind = FALSE
)
#> Error in `[[<-.data.frame`(`*tmp*`, i, value = "gray20"): replacement has 1 row, data has 0

^{Created on 2023-04-18 with reprex v2.0.2}

[julianselke]

In the current version of gganimate (1.0.8) there is no need to use shadow_mark() to keep all previously mapped data visible. Just add the argument cumulative = TRUE to the transition_manual() call.

[AdrianAllen1977]

Thank you!

…

On Fri, Sep 22, 2023, 19:02 Julian Selke ***@***.***> wrote: In the current version of *gganimate* (1.0.8) there is no need to use shadow_mark() to keep all previously mapped data visible. Just add the argument cumulative = TRUE to the transition_manual() call. — Reply to this email directly, view it on GitHub <#298 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ALOE2IZPTVMRIKT3MOXHISLX3XHCFANCNFSM4G2C5SLQ> . You are receiving this because you authored the thread.Message ID: ***@***.***>