How to read zero crossing values from script?

I have code written for locating zero crossing of a signal but I dont get how to read those values or where ther are stored? Is ther any way I can store those values in some vector or see them in command window? The portion of script for Zero crossing is as under:

zci = @(v) find(v(:).*circshift(v(:), [1 0]) <= 0);                    
da3td = double(da3t);
idx = zci(da3td);
if da3td(1) * da3td(end) < 0
    idx = idx(2:end);
end
for k = 1:numel(idx)
    t_exact(k) = interp1(da3td(idx(k))+[-1 +1]*1E-5, time(idx(k))*1E9+[-1 +1], 0);
end

[darova]

I usually use polyxpoly for intersection

[Syed Adeel]

ty

Answer 1

[Star Strider]

They are stored in the ‘t_exact’ vector.

Plot them as:

figure
plot(time, da3td, '-b')
hold on
plot(t_exact, zeros(size(t_exact)), 'xr')
hold off
grid

.