How to make plotly marker labels in scatter3d plots the same color as the marker?

Question

The label colors on my plotly 3d scatter charts do not match the marker colors:

All labels end up being the same color with the following minimal example:

plot_ly(
     data      = mtcars,
     type      = "scatter3d",
     mode      = "markers",
     colors    = c("blue","red"),
     text      = row.names(mtcars),
     hoverinfo = "text",
     color     = ~cyl,
     x         = ~disp,
     y         = ~hp,
     z         = ~qsec
)

With 2D scatter plots, the labels are colored appropriately:

Which is achieved using:

plot_ly(
     data      = mtcars,
     type      = "scatter",
     mode      = "markers",
     colors    = c("blue","red"),
     text      = row.names(mtcars),
     hoverinfo = "text",
     color     = ~cyl,
     x         = ~disp,
     y         = ~hp
)

I know a color range for the legend isn't appropriate in this example, but it's needed for the actual data I would use with this code.

vpz vpz · Accepted Answer · 2019-07-27T14:52:22

Well, it seems that if you set color = ~as.factor(cyl) it works correctly.

But I really don't have idea why.

The code:

plot_ly(
  data      = mtcars,
  type      = "scatter3d",
  mode      = "markers",
  colors    = ~c("blue","red"),
  text      = row.names(mtcars),
  hoverinfo = "text",
  color     = ~as.factor(cyl),
  x         = ~disp,
  y         = ~hp,
  z         = ~qsec
)

The output:

How to make plotly marker labels in scatter3d plots the same color as the marker?

1 Answers