Pre-determine plot ranges?

4 次查看（过去 30 天）
Chris
Chris 2019-8-21
评论： Chris 2019-8-23
Given two vectors of the same length is there a way to determine the axes ranges that would result if the data were plotted without plotting the data?
I am looking to update xlim and ylim manually after the plotted data is changed* but with out relying on the automatic resizing as there are other things plotted that I dont want to be used in determining the plot ranges. Also I would rather not redraw the entire figure with just the modified data then redraw the larger thing.
(plotted data is changed*: I am manipulating the XData and YData parameter of plotted data directly with a handle.)

请先登录，再回答此问题。

采纳的回答

Adam Danz
Adam Danz 2019-8-21
编辑：Adam Danz 2019-8-21
If vector1 and vector1 are the x and y values to be plotted, the xlim and ylim for a tight axis would be,
xlim([min(vector1), max(vector1)]);
ylim([min(vector2), max(vector2)]);
If you'd like to access those values from the line object handle 'h',
xlim([min(h.XData), max(h.XData)]);
ylim([min(h.YData), max(h.YData)]);
If you'd like to add 5% of the data range on each side so your max and min data points are not on the axis edges,
xlim([min(x),max(x)] + [-1,1]*.05*range(x))
ylim([min(y),max(y)] + [-1,1]*.05*range(y))
  4 个评论
显示 2更早的评论
Adam Danz
Adam Danz 2019-8-21
编辑：Adam Danz 2019-8-22
Your proposal requires that an axis already exists. If you want to base "int" from my solution on the axis tick interval,
int = mean(diff(get(gca,'xtick')));
xl = [floor(min(x)/int)*int,ceil(max(x)/int)*int];
Chris
Chris 2019-8-23
yep good edit. initilization wont be a problem and the changed data points will be of the same magnitude so reusing tick should work.

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Specifying Target for Graphics Output 的更多信息

标签

产品


版本

R2019a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by