# Hiding a Manipulate slider

I want to generate a different random initial condition for rule 110 using a Button for Manipulate, not a slider. How can I make the slider invisible here? I tried specifying ControlType -> None, and made the Button disappear.

 Manipulate[
SeedRandom[seed];
ArrayPlot[CellularAutomaton[110, RandomInteger[1, 600], 700]],
{ seed, 1, 1000, 1},
Button["Randomize initial condition",
If [seed < 1000, seed = seed + 1, seed = seed - 1]]]

• Did you do it like this?: {seed, 1, 1000, 1, ControlType -> None} – Michael E2 Jan 25 '15 at 2:15
• No, I tried: Manipulate[ SeedRandom[seed]; ArrayPlot[CellularAutomaton[110, RandomInteger[1, 600], 700]], { seed, 1, "", 1000, 1}, Button["Randomize initial condition", If [seed < 1000, seed = seed + 1, seed = seed - 1]], ControlType -> None], and thanks, that works – andandandand Jan 25 '15 at 2:18
• Done. And you're welcome! – Michael E2 Jan 25 '15 at 2:59

To have no control for seed to appear, apply the option ControlType -> None to the variable:
 Manipulate[

• Note also that {seed, 1, 1000, 1, None} will suffice. – Mike Honeychurch Jan 25 '15 at 5:11