selecting points on 3D scatterplots
On 5/12/2009 3:08 PM, Abby Drake wrote:
Hello Everyone, I am new to R and need some help. I have a matrix of x,y,z coordinates that I would like to interactively plot in 3D and then using the cursor select points on the plot and have the coordinates sent to a matrix. I am using the rgl package to plot the data at the moment because it allows me to rotate and zoom. I also tried cloud and scatterplot3D. I am looking for a function like 'locator' which is used to select points on 2D scatterplots.
There's no locator3d, but select3d is somewhat similar. You could write a locator3d function using the rgl.setMouseCallbacks, rgl.user2window and rgl.window2user functions, if you can figure out how to indicate depth with a mouse click. identify3d might be a little easier. Duncan Murdoch