LY Cao

great work!
but I found something wrong:
scatter(rand(10,1),rand(10,1),50);
export_fig('1.png',gca)
and the axes in 1.png is empty.
the matlab function allchild can't find the children of a handle whose type is 'hggroup'(e.g. scatter hggroup).
I modified the allchildren function in isolate_axes.m：
function ah = allchildren(ah)
ah = allchild(ah);
if iscell(ah)
ah = cell2mat(ah);
end
ah = ah(:);
for i = 1:numel(ah)
if strcmp(get(ah(i),'type'),'hggroup')
t =allchildren(ah(i));
ah(end+1:end+numel(t)) = t;
end
end
return
and it worked.