MATLAB: Custom Datatip with Line Information on Matrix Plot

custom datatipdatatipMATLABmyupdatefcnplotplot tag

I have two matrices. One matrix is plotted and the other has information about each plot line.
Super simplified example: 
t = 0:.001:1;
f = [10,20,30];         % information vector
y = sin(2*pi*f.*t');    % output matrix
plot(t,y)
I would like to use the datatip to show the 'f' information along with the x,y coordinates. I am trying to follow the 'myupdatefcn' method using 'datacursormode', but I can't figure out which line (or column of the matrix) I am placing a datatip on.
Any help would be appreciated.

Best Answer

  • Loop through the object handles and add the DataTipRows for each object. 
    t = 0:.001:1;
    f = [10,20,30];         % information vector
    y = sin(2*pi*f.*t');    % output matrix
    h = plot(t,y); % <--- store handle
    for i = 1:numel(h)
        % Add a new row to DataTip showing f-values
        h(i).DataTipTemplate.DataTipRows(end+1) = dataTipTextRow('F',repmat({num2str(f(i))},size(h(i).XData))); 
    end