How can I automatically select two points in a plot?

Hello,

How can I automatically select two points in a plot?

I use ginput manually, but I want to automate the selection.

You can see part of the code below:

    x = (1:length(compositfilt));
    y = compositfilt;
    hold on
    grid on
    xlabel('time [s]');
    ylabel('voltage');
    plot(x,y) 
    
        [cut1, ~] = ginput(2);
        cut1 = round(cut1);
        
    compositfilt = compositfilt(:,cut1(1):cut1(2));
     clf
    x = (1:length(compositfilt));
    y = compositfilt;
    plot(x , y)

Answer 1

[Cameron B]

Select them as in producing data tips? If that's the case, then see the code below. If not, then please explain what you'd like a little bit more.

xx = 1:1:30;
yy = sqrt(xx);
fig = figure;
figplot = plot(xx,yy);
CursorPt1 = createDatatip(datacursormode(fig),figplot);
CursorPt2 = createDatatip(datacursormode(fig),figplot);
CursorPt1.Marker = 'o';
CursorPt2.Marker = 'o';
CursorPt1.MarkerSize = 5;
CursorPt2.MarkerSize = 5;
CursorPt1.Position = [xx(3),yy(3)];
CursorPt2.Position = [xx(6),yy(6)];