determine axis limits *before* plotting..?
13 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi everyone,
I need to determine the y-axis limits "before" rendering my plot, b/c the elements are rendered in a loop, one at a time. xlim() isn't any use in this case. Will I have to reverse-engineer MATLAB's algorithm, or is there another approach?
Thanks, Brad
3 commentaires
Réponse acceptée
Jan
le 9 Sep 2012
Modifié(e) : Jan
le 10 Sep 2012
Yair has explained some tricks to http://undocumentedmatlab.com/blog/plot-performance/. You can set the XLimMode of the current axes to 'fixed' and let Matlab determine the limits at the end only by resetting it to 'auto'.
[EDITED, link fixed, thanks Yair]
Plus de réponses (1)
Image Analyst
le 9 Sep 2012
You can save the y and x limits for the current axes at any time by using the ylim and xlim functions:
% Save initial limits.
initial_ylim_values = ylim();
initial_xlim_values = xlim();
% Now plot something that will change the ylimits
plot(x, y); % Some y that will change the y limits.
after_ylim_values = ylim();
after_xlim_values = xlim();
2 commentaires
Image Analyst
le 9 Sep 2012
Then you need to set "hold on" and MATLAB will "lock down" all those settings and not allow subsequent plots to change them.
Voir également
Catégories
En savoir plus sur Environment and Settings dans Help Center et File Exchange
Produits
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!