Change option value within @manipulate?

[cbecker]

I am not sure this is possible, but is there a way to change the value of an option within a @manipulate loop? For example, consider

using PyPlot
f = figure()
@manipulate for is_synapse=[true,false,None],i=1:10 withfig(f) do
        display( is_synapse)
    end
end

What I want is that the user goes from i=1...10 and chooses one of the options, but when the user changes the slider value, the option is_synapse gets updated, according to an internal list, such as:

using PyPlot
f = figure()
@manipulate for is_synapse=[true,false,None],i=1:10 withfig(f) do
        if i changed because of user
                is_synapse = value from cache
        else if is_synapse changed because of user
                value from cache = is_synapse
        end
    end
end

Any hints are welcome, thanks for this great package!

[ghost]

I think it's related enough that it doesn't warrant a new issue: is there any way of setting the default value of a slider while using manipulate?

[shashi]

there is a way of setting the default value:

@manipulate for i=slider(1:10, value=3)
   i
end

however I think the original question is making the default value of some widget depend on the current value of a slider.