Clicking on List to Plot

BACKGROUND: Below is the solution that Image Analyst(forum member) created by constructing two lists with variables and by clicking on the variable the data is output in the command window (see code below).

GOAL: My next step is to click on one variable on each list, and create a plot from the two variables that I selected.

CODE:

    function learnlists
    clc;
    format compact;
    format long;
    figure;
    yourcell={'mass','velocity','time','acceleration','speed'}
    % Create first listbox.
    uicontrol('Style', 'listbox','Position',[100 100 200 200],...
      'string',yourcell,'Callback',@measurements)
    % Create second listbox.
    uicontrol('Style', 'listbox','Position',[300 100 200 200],...
      'string',yourcell,'Callback',@measurements)

    function [out] = measurements(handleToParentControl,evnt)
    mass = [ 23 45 44];
    velocity = [34 53 32];
    time = [1 2 3];
    acceleration = [32 22 12];
    speed = [12 33 44];

    selectedItem = get(handleToParentControl,'value');
    % Print selected array to command window:
    switch selectedItem
      case 1
        mass
      case 2
        velocity
      case 3
        time
      case 4
        acceleration
      case 5
        speed
    end

[Walter Roberson]

hmmm.. thought you already asked this one a little earlier ?

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.3F

I suggest that instead of having your measurements function as a callback, that you use something like

function [out] = measurements
  mesnames = {'mass', 'velocity', 'time', 'acceleration', 'speed'};
  mesvals = {[ 23 45 44], [34 53 32], [1 2 3], [32 22 12], [12 33 44]};
  out = struct('name', mesnames, 'value', mesvals);

Then

handles.measurements = measurements();
handles.list1 = uicontrol('Style', 'listbox','Position',[100 100 200 200],...
    'string',yourcell, 'Callback',@select_n_plot);
handles.list2 = uicontrol('Style', 'listbox','Position',[300 100 200 200],...
    'string',yourcell, 'Callback', @select_n_plot);

guidata(gcf, handles);

function select_n_plot(hObject, event)
  handles = guidata(hObject);

    list1val = get(handles.list1,'Value');
    list1var = handles.measurements(list1val);
    list1varname = list1var.name;
    list1varval = list1var.value;

and likewise for list2. After that, plot list1varval against list2varval and label with list1varname and list2varname

[Amanda]

I've been on this problem all day. Thanks.