Selecting points from UI Axes App Designer MATLAB R2019a

38 次查看（过去 30 天）
Hemanth Hariharan
Hemanth Hariharan 2019-8-12
评论： Ahmed 2023-6-7
I am plotting this histogram on UI Axes App Designer R2019a, and I want the user to be able to interactively split the plot using vertical lines (so that I can get the X coordinate at which they are placed). I was previously using getpts, which does not seem to work on UI Axes. Is there a solution for this?

请先登录，再回答此问题。

采纳的回答

Abhilash Padma
Abhilash Padma 2019-8-16
I understand that you want to split the plot using vertical lines whenever you click on the axes. But, there is no built-in functionality of adding callbacks to UIAxes as of now. Rather, consider using the ButtonDownFcn callback of plot object to draw vertical lines. Here, the plot object can be used to get your expected output.The following code below may help you solve the problem.
p=plot(app.UIAxes,1:10);
p.ButtonDownFcn=@mouseClick;
function mouseClick(~,~)
cp=get(app.UIAxes,'CurrentPoint');
xline(app.UIAxes,cp(1,1));
end
For more information, refer the following links: https://www.mathworks.com/help/matlab/creating_plots/button-down-callback-function.html
  5 个评论
显示 3更早的评论
Prashanth Thambala
Prashanth Thambala 2022-9-22
@Abhilash Padma can you help me to break out of the function, as the function does not run for finite clicks and stores the last clicked value
Ahmed
Ahmed 2023-6-7
Hello everyone,
I'm also struggling with this. Where should the function (mouseclick) be placed in the code view? I have the similar implementation but my click function doesnt seem to be triggered when I click on the plot. I think the reason is becuase it is in another slider function. So I'm not sure now where to place in my click function in the code view.
% Value changed function: FrequencySlider
function FrequencySliderValueChanged(app, event)
value = app.FrequencySlider.Value;
freq=value;
[d,ix]=min(abs(app.freq_vec-freq));
scatter3(app.UIAxes,app.XYZ(:,1)*10000,app.XYZ(:,2)*10000,abs(app.y(:,ix))*10000,[],abs(app.y(:,ix))*10000,'filled','ButtonDownFcn',@click)
view(app.UIAxes, [0 90]);
c = colorbar(app.UIAxes)
colormap(app.UIAxes, jet)
axis(app.UIAxes, 'tight')
axis(app.UIAxes, 'equal')
app.EditField.Value=value;
function click(~,eventData)
coords = eventData.IntersectionPoint;
app.ZEditField.Value=coords;
end
end

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 Interactive Control and Callbacks 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