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...across the longitude slice #planes3d(a, b, c, d, alpha = 0.6) # optionally visualize the plane # Apply clipping to only one side of the plane using the normal vector clipplanes3d(a, b, c, d) # Map something onto this plane - how? Let's try with rgl.points and mapping the colors # The data is: data_activity and variables are $X, $Y, $Z, $Ar library(leaflet) # map the colors to the data values pal <- colorNumeric( palette = "Blues", domain = data_activity$Ar) # # plot the points and the mapped colors rgl.points( data_activity$X, data_activity$Y, data_activity$Z, color = pal(data_a...

...lanes3d(a, b, c, d, alpha = 0.6) # optionally visualize the plane > # Apply clipping to only one side of the plane using the normal vector > clipplanes3d(a, b, c, d) > > # Map something onto this plane - how? Let's try with rgl.points and > mapping the colors > # The data is: data_activity and variables are $X, $Y, $Z, $Ar > library(leaflet) > # map the colors to the data values > pal <- colorNumeric( > palette = "Blues", > domain = data_activity$Ar) # > # plot the points and the mapped colors > rgl.points( data_activity$X, data_activity$Y...

> It should be a 2D slice/plane embedded into a 3D space. I was able to come up with the plot, attached. My intention was to plot national boundaries on the surface of a sphere. And put the slice inside. However, I haven't (as yet) worked out how to get the coordinates for the boundaries. Let me know, if of any value. And I'll post the code. (But needs to be polished first)

Thanks for your idea. It should be a 2D slice/plane embedded into a 3D space. Could be static, I just need to make a single figure from it for illustration of the Earth together with its interior in 3D. So, the interior would be a slice in 2D along a fixed longitude. And along this 2D slice would be a heatmap. Again, embedded in 3D, since it would be shown as a slice of Earth in 3D. Duncan?s