# How can you change the viewpoint of perspective (to infinity) in a 3d plot?

I am plotting a function with a large z coordinate, so it has a rectangular solid box around it which is square in crossection and very long in height. If you rotate it to view from the end you don't see the orthogonal projection onto the square, since the solid framing the graph is rendered inperspective from a viewpoint which is not infinity. I tried aspect_ration {1,1,1] but that doesn't correct it. Any ideas ???

PS I'm running this ion the Cloud - I can't get 3d plots to run in my own notebook yet, and anyway right now my notebook isn't working at all- see other question !

Please give us some code, using a constant function or something like $$(x,y)\to \min( \ \exp(1/(x^2+y^2))\ ,\ 10^6\ )\ ,$$ and the name of the viewer.

That's related to the question:

https://ask.sagemath.org/question/384...

I don't know any simple way...