determine axis limits *before* plotting..?
29 次查看(过去 30 天)
显示 更早的评论
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 个评论
采纳的回答
Jan
2012-9-9
编辑:Jan
2012-9-10
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]
更多回答(1 个)
Image Analyst
2012-9-9
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 个评论
Image Analyst
2012-9-9
Then you need to set "hold on" and MATLAB will "lock down" all those settings and not allow subsequent plots to change them.
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Graphics Performance 的更多信息
产品
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!