How to fill closed curves. The code I wrote can't be implemented, I don't know how to correct it, thanks for the answer.

fig = openfig('biaozhunxinyuevv.fig');

fig = gcf;
axObjs = fig.Children;
dataObjs = axObjs.Children;
xt= dataObjs(1).XData;
yt= dataObjs(1).YData;
fill(xt,yt,'r')
plot(xt,yt,'ko')
hold on

Answer 1

[KSSV]

fig = gcf;
axObjs = fig.Children;
dataObjs = axObjs.Children;
xt= dataObjs(1).XData;
yt= dataObjs(1).YData;
fill(xt,yt,'r')
hold on
plot(xt,yt,'ko')

[Wesley]

Thanks a lot for your answer. The result of running your code is still not filled with black, as shown in the picture below.

[KSSV]

open('biaozhunxinyuevv.fig');

a = get(gca,'Children');

xdata = get(a, 'XData');
xdata = [xdata{1} xdata{3}] ; 

ydata = get(a, 'YData');
ydata = [ydata{1} ydata{3}] ; 

patch(xdata,ydata,'r')

You can use your ocde also, but extract (1 and 3) data as shown.

[Wesley]

I see, the padding is well implemented, thank you very much for your answer.

[KSSV]

Thanks is accepting the answer.. :)