How to plot fmincon fvalues at each iteration from parallel pools?

I'd like to plot multiple dot/line plots of the successively minimized fvals from fmincon that is being run multiple times on a parfor loop. Essentially I want the PlotFcn 'optimplotfval' that can be run on a single iteration of fmincon, but in a plot with all parallel runs of fmincon. I tried making a dataqueue and sending the information to the queue q within the outfun of the fmincon, but it seems like the queue q is inaccessible from within the outfun of fminaon.The crux of the idea is:

Main code:

q = parallel.pool.DataQueue;
q.afterEach (@Some code that will update a displayed plot);
parfor i = 1:4
    [values, score] = runfmincon(...)
        end

Another file runfmincon.m:

    F = @(x) objfunc(...)
        options = optimset('OutputFcn',{@outfun});
    [values, score] = fmincon(F,.....,options)
        function score = objfunc(...)
        %My objective function
        end
        function stop = outfun(x,optimValues,state)
        send(q,optimValues.fval);
        end

[Raymond Norris]

See if this will work. Change

options = optimset('OutputFcn',{@outfun});

to be

optimset('OutputFcn',@(x,optimValue,state)outfun(x,optimValue,state,q));

And then change

function stop = outfun(x,optimValues,state)

to be

function stop = outfun(x,optimValues,state,q)

[Matt J]

I believe you'll need to send back the worker ID number as well as optimValues.fval, so that afterEach will know which of the parallel plots to update.

send(q,{optimValues.fval, getCurrentTask().ID);

[Richard Law]

@Raymond Norris your suggestion worked great. Didn't think to try passing the dataqueue into the function. Thanks!