Hi Stella,
I understand from your query that you want to plot this graph such that the peaks and valleys show up one by one, as the graph reaches that point.
In the code you've provided, the following lines plot all of the possible peaks and valleys at once.
plot (time (locs), pks, 'or');
plot (time (vlocs), vks, 'or');
Instead, you can add a condition and select the valid indices, such that they only include the ones which are covered by the timestamps stored in 'x1'.
Here is the updated for loop:
for i = 2:length(n)
% Update the data source
x1 = time(1:i*500);
y1 = mag(1:i*500);
refreshdata(h, 'caller');
drawnow;
valid_pks_indices = locs(time(locs) <= x1(end));
valid_vks_indices = vlocs(time(vlocs) <= x1(end));
if ~isempty(valid_pks_indices)
plot(time(valid_pks_indices), pks(ismember(locs, valid_pks_indices)), 'or');
end
if ~isempty(valid_vks_indices)
plot(time(valid_vks_indices), vks(ismember(vlocs, valid_vks_indices)), 'or');
end
pause(0.01); % Can be adjusted
end
The loop now checks if the peak or the valley occured within the required timestamps, and plots them.
Hope this helps!
