Introduction - If you have any usage issues, please Google them yourself
data base
t0=linspace(0,2*pi)
for i=1:100
if rem(i,4)==0
t1(i)=NaN
else t1(i)=t0(i)
end
if rem(i,4)==2
t2(i)=NaN
else t2(i)=t0(i)
end
end
p=linspace(0,0.25*pi)
[xx,yy]=meshgrid(-2:0.05:2)
[xxx,yyy]=meshgrid([0.01 0.01])
drawing process
for i=1:10
if rem(i,2)==0
a=t1
elseif rem(i,2)==1