How do you set up manipulate so that you can control a variable with a vertical slider instead of a horizontal slider in Mathematica?
From the help ....
Manipulate[u, {u, 0, 1, ImageSize -> Small},
ControlType -> VerticalSlider, ControlPlacement -> Left]
来源：https://stackoverflow.com/questions/4418699/putting-a-verticalslider-into-mathematicas-manipulate