Deleting lines and underlying data with button click / key press.

Hi all,

I have a structure with 12 fields. Each field contains a 10x1 cell. Each cell contains a 1x500 double.

What I currently do is parse through the data with a simple for loop where I plot the contents of each cell, one at a time. At every iteration of a plot, I use a menu to get feedback on whether to accept or delete the 1x500 double. If the user chooses to accept, what I do is save the loop's iteration # for that particular cell as a way to index it for reference in the future.

I'm at the point now where I can see how tedious this is going to be with massive amounts of data. What I'd like to do is maybe plot the contents of each 10x1 cell at a time and use the "buttondownfunction" or "keypressfunction" to delete lines from the graph (as well as updating the cell after deletion).

I'm new to working with using keys and button-clicks and to keep things simple I've been working a dummy data set and here's what I have so far:

function dum
load dum.mat;
global p;
figure;
k=1;
for i = 1:2
    for j = 1:2
       p(k) = plot(dumStruct.dumCell{j},'buttondownfcn',@lineCallback);
       set(p(k),'UserData',k)
       k=k+1;
       hold on
    end
end

function [] = lineCallback(src,~)

h = gco

plot_delete = get(h,'UserData')

%     if plot_delete == %search for stored 'UserData' contents from p(k)
%         % Then delete that data from the cell
%         % and
%         % Delete line from figure with delete(gco);
%     end

Here I have some basic idea of how to delete lines in the plot with a left-click but my question is how do I update the corresponding cell after each deletion? I thought to save every plots handle and use the 'UserData' property as a unique identifier which I set as the 'k' value from the loops iteration. When I click on a line in the plot, lineCallback() will grab the handle for current object. I'm not sure how to conduct a fast search and whether I'm doing all of this entirely right. Any guidance would be greatly appreciated. Thank you very much for your time.