add_annotations doesn't respect log scale

When using add_annotations with a log scale, the coordinates of the annotations are not automatically log-transformed.

exp_dat <- data.frame(x = 0:100, 
                      y = exp(0:100))
ann_dat <- data.frame(x = c(1, 10, 100), 
                      y = exp(c(1, 10, 100)),
                      label = c(1, 10, 100))

plot_ly(type = "scatter", mode = "lines+markers") %>%
  add_lines(., data = exp_dat, x = ~x, y = ~y) %>%
  add_annotations(., data = ann_dat, x = ~x, y = ~y, text = ~label) %>%
  layout(., yaxis = list(type = "log"))

The desired result can be obtained by manually log-transforming the coordinates, but it would be more intuitive if this wasn't necessary.

plot_ly(type = "scatter", mode = "lines+markers") %>%
  add_lines(., data = exp_dat, x = ~x, y = ~y) %>%
  add_annotations(., data = ann_dat, x = ~x, y = ~log10(y), text = ~label) %>%
  layout(., yaxis = list(type = "log"))

Reproduisez l’exemple R fourni avec add_annotations et un axe y logarithmique, puis examinez le point d’entrée de add_annotations et sa gestion des coordonnées d’annotation. Le travail est terminé lorsque les annotations sont correctement alignées sur l’échelle logarithmique sans transformer manuellement les valeurs de y.