How to add information in a figure already created

22 次查看（过去 30 天）
German Preciat Gonzalez
编辑： German Preciat Gonzalez 2017-11-28
Imagine that I have a function like this
function somethingPlotted = plotSomething(x, y)
somethingPlotted = plot(x,y);
end
if I write this:
x = 0:pi/100:2*pi;
y = sin(x);
somethingPlotted = plotSomething(x, y)
my out put will be:
somethingPlotted =
Line with properties:
Color: [0 0.4470 0.7410]
LineStyle: '-'
LineWidth: 0.5000
Marker: 'none'
MarkerSize: 6
MarkerFaceColor: 'none'
XData: [1×201 double]
YData: [1×201 double]
ZData: [1×0 double]
Show all properties
How can I modify the variable somethingPlotted in order to change the axis, adding legend, and adding more plots with different color in somethingPlotted?
What I really need is to go from here
to here
By modifying somethingPlotted
thanks in advance!
Regards!

请先登录，再回答此问题。

回答（1 个）

KL
KL 2017-10-5
编辑：KL 2017-10-5
If this plot is the current figure then use gca, gcf. Even better is to output the axes and figure handle from your plotSomething function. For example,
[somethingPlotted, ax, fig] = plotSomething(x, y)
ax.Title.String = 'My Title';
  1 个评论
Steven Lord
Steven Lord 2017-10-5
If all you have is the handle to the line, instead of using gca or gcf in a function I would use ancestor. This will ensure you get the axes or figure in which that line is located, not the last one on which the user clicked.
h = plot(1:10)
ax = ancestor(h, 'axes')
f = ancestor(h, 'figure')
f2 = figure;
isequal(gcf, ancestor(h, 'figure')) % false
% Changing gcf's Color makes f2 cyan
set(gcf, 'Color', 'c');
% Changing h's figure ancestor makes f black
set(ancestor(h, 'figure'), 'Color', 'k')

请先登录，再进行评论。

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

Community Treasure Hunt

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

Start Hunting!

Translated by