update tool tip data using data cursor in loop
4 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Hi all.
I am plotting sevrals of plots all in one figure. I want to use custom tool tip that shows me each plot iteration origin.
but for some reason, when using the tool tip , it shows only the last iteration number on all of the plots.
my code bellow.
what am I dong wrong?
fig=figure;
hold on;
for i=1:4
x=sort(rand(1,100));
y=sin(2*pi*x*i);
txt = ['itr ',num2str(i)];
plot(x,y,'DisplayName',txt)
dcm_obj = datacursormode(fig);
set(dcm_obj,'UpdateFcn',{@myupdatefcn,'itr=',i})
end
xlabel('x');ylabel('y');
hold off
legend show
function txt = myupdatefcn(~,event_obj,txt4update,Num)
% Customizes text of data tips
pos = get(event_obj,'Position');
I = get(event_obj, 'DataIndex');
txt = {[txt4update ,': ',num2str(Num)],...
['x: ',num2str(pos(1))],...
['y: ',num2str(pos(2))]};
end
1 Kommentar
Adam
am 6 Mär. 2019
Bearbeitet: Adam
am 6 Mär. 2019
You are overwriting the UpdateFcn callback function each time round the loop so at the end it will take on the value of the last time round the loop. If you want it to show you a history you will need to store up that history in a variable and pass the whole variable to the UpdateFcn at the end. This can be outside the loop as setting UpdateFcn in a loop is not useful.
I'm not 100% sure what kind of end result you are looking for or what your set of plots looks like at the end.
Akzeptierte Antwort
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Loops and Conditional Statements finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!