Visualize 3D image

I have a three dimensional array for a 3D grayscale image in that I would like to view without exporting the array and opening it using another program. Are there any packages that would allow me to view the image?

I haven't used it personally, but I think {rayshader} does exactly that. And if I remember correctly, it can easily start with a ggplot and just add a third dimension.

A three dimensional array is actually four dimensions of data. I imagine that you’re looking to plot three spatial dimensions with the fourth dimension as the color. The challenge with that is you’ll only see the faces of the cube. You need a way to see “inside” the cube.

You might have to slice it into a set of heat maps, or create an animation or interactive vis that allows user to scan through the slices?

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