Plot using the App Designer

Question

Fuwad Abdul Muyeed 2021-10-4

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1466566-plot-using-the-app-designer

回答： Shravan Kumar Vankaramoni 2021-10-7

I have a certain data of approximately 100 data points stored in a variable in 2 columns. Suppose data=[x,y] (2 columns,100 rows).

Under the App Designer, I want to extract first 20 data points and plot them. Upon checking the plot, I want to select the Next button and view the plot for the next 20 data points. I have set up the layout in the App Designer but I would like to know how and where to add the code such that it will extract the points from existing variable 'data' and plot them. I am using the 3 panel layout.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Shravan Kumar Vankaramoni 2021-10-7

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1466566-plot-using-the-app-designer#answer_803391

在 MATLAB Online 中打开

graph_app.mlapp

Hi,

You need to maintain a local variable to keep a count on the number of points already read. Below code demonstrates plotting the graph with next 20 points on clicking next button. "app.Data" is your data and "app.Count" counts the number of points read. Below function is the callback for next button.

function NextButtonPushed(app, event)
    x = app.Data(app.Count:app.Count+19,1);
    y = app.Data(app.Count:app.Count+19,2);
    %passing the axes on which graph is displayed
    plot(app.UIAxes,x,y);
    
     app.Count = app.Count + 20;
    if app.Count > 100
         app.Count = 1;
    end
end