custom geoms

[mps9506]

Instead of a plotting function that exports the ggobject, the fdc/ldc layers can be created using a custom geom. This retains the expected ggplot workflow that everyone uses. I think this should be the preferred way of creating plots. See:
https://fosstodon.org/@milesmcbain/110587249315649714

[mps9506]

Spitballing how this would look:

ggplot() +
  geom_ldc(data = df_ldc, aes(P_Exceedance, Allowable_Daily_Load)) +
  geom_ldc_sum(data = df_sum, aes(Median_P, Median_Flow_Load)) +
  labs(y = "whatever", x = "exceedance")

Instead of geom_ldc_sum() we could make use of stat_summary() which opens up the possibility to overlay mean, median, boxplots, etc...