fill() in parfor loop

I've got ~200,000 polygons to be plotted with fill().

for i=1:size(data,1);
    x=data(i,3:2:9);
    y=data(i,4:2:10);
    f=fill(x,y,data(i,2));
    hold on;
end

It works well but takes a bit of time. When I use 'matlabpool open local 4' and change 'for' to 'parfor', I've got no figure output. Any solutions please?

[Sean de Wolski]

Do you actually expect to be able to differentiate 200000 polygons?

Answer 1

[Titus Edelhofer]

Hi,

you should be able to call fill with the corresponding matrices directly, something like

f = fill(data(:, 3:2:9)', data(:, 4:2:10)', data(:,2)');

Titus

[seb]

Many thanks Titus, it's much quicker as run time is 34s:112s! I really shouldn't have abused for loops.

[Titus Edelhofer]

Hi Seb, your welcome. You might mark the question then as answered, if you think it is ...

Answer 2

[Edric Ellis]

Unfortunately, you cannot use a PARFOR loop in this way. The workers cannot create graphics on your client.

[seb]

Many thanks Edric. Still wondering if there's any other way to speedup this tedious job, without parfor.