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 Feb27 awarded Nice Question Jul2 awarded Curious May30 awarded Popular Question Aug12 awarded Nice Question Sep14 comment How are parameters evaluated for a Plot in Manipulate ok thanks for the explanation on how Evaluate works. That really did confuse me. So basically, it only works at the top level. Ok, so I will just have to define the parameters as variables. Sep14 accepted How are parameters evaluated for a Plot in Manipulate Sep14 comment How are parameters evaluated for a Plot in Manipulate Sorry, I meant variables, not functions. You've almost sold me that this should be the way to go, except for one thing. It seems to work when you Evaluate, but not plot (see my edit to the original question). Isn't there someway we could just include an Evaluate command and keep m1, m2 as parameters? Sep14 comment How are parameters evaluated for a Plot in Manipulate Thanks @celtschk, what about the case where I evaluate the function, but don't plot it (please see my edited question above). Why would this work, but not the plot? Sep14 revised How are parameters evaluated for a Plot in Manipulate Further example Sep14 comment How are parameters evaluated for a Plot in Manipulate Thanks @Vitaliy. So the key change here is to put the parameters m1 and m2 as functions, right? I guess that is just the way you should do things in Mathematica. But for some reason it doesn't seem right to me. For example, if I wanted to differentiate bigA with respect to t, would m1 and m2 still be kept symbolic? Sep14 asked How are parameters evaluated for a Plot in Manipulate Sep14 comment How can define a set of nested parameters Thanks @b.gatessucks, I guess that would work. But in the latter example, I would have to input the m1, m2 data twice. Sep14 asked How can define a set of nested parameters Sep11 accepted How to make a tight crop of a 3d plot? Sep11 comment How to make a tight crop of a 3d plot? haha, ok cool, so changing the opacity of the sphere fixes it. Why didn't I think of that! Cheers. Sep11 comment How to make a tight crop of a 3d plot? that definitely helps, but in the plot that I am after, it crops some of the object (see my edit to the question). Sep11 revised How to make a tight crop of a 3d plot? Response to answers Sep11 awarded Commentator Sep11 comment How to make a tight crop of a 3d plot? Hi @J.M., PLotRangePadding-> None didn't seem to do much, but the Method option did (so thanks!). I'm curious though, how was I ever supposed to find this in the help? This is what I mean by not understanding Mathematica syntax. Sep11 comment How to make a tight crop of a 3d plot? Hi @belisarius, fine, it is not whitespace. But this doesn't answer the question of how to make a tight crop around just the object(s).