function varargout = lb2(varargin)
% LB2 MATLAB code for lb2.fig
%      LB2, by itself, creates a new LB2 or raises the existing
%      singleton*.
%
%      H = LB2 returns the handle to a new LB2 or the handle to
%      the existing singleton*.
%
%      LB2('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in LB2.M with the given input arguments.
%
%      LB2('Property','Value',...) creates a new LB2 or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before lb2_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to lb2_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help lb2

% Last Modified by GUIDE v2.5 11-Feb-2015 16:52:53

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @lb2_OpeningFcn, ...
                   'gui_OutputFcn',  @lb2_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT


% --- Executes just before lb2 is made visible.
function lb2_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to lb2 (see VARARGIN)

% Choose default command line output for lb2
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

update_listbox(handles)
set(handles.listbox1,'Value',[])
% UIWAIT makes lb2 wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = lb2_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;


% --- Executes on selection change in listbox1.
function listbox1_Callback(hObject, eventdata, handles)
% hObject    handle to listbox1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: contents = cellstr(get(hObject,'String')) returns listbox1 contents as cell array
%        contents{get(hObject,'Value')} returns selected item from listbox1


% --- Executes during object creation, after setting all properties.
function listbox1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to listbox1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: listbox controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
usewhitebg = ispc;
if usewhitebg
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(groot,'defaultUicontrolBackgroundColor'));
end


% --- Executes on button press in update_button.
function update_button_Callback(hObject, eventdata, handles)
% hObject    handle to update_button (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of update_button
update_listbox(handles)

function update_listbox(handles)
% hObject    handle to update (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: contents = get(hObject,'String') returns listbox1 contents as cell array
%        contents{get(hObject,'Value')} returns selected item from listbox1

% Updates the listbox to match the current workspace
vars = evalin('base','who');
set(handles.listbox1,'String',vars)

function [var1,var2] = get_var_names(handles)
% Returns the names of the two variables to plot
list_entries = get(handles.listbox1,'String');
index_selected = get(handles.listbox1,'Value');
var1 = [];
var2 = [];
if length(index_selected) ~= 2
    errordlg('You must select two variables','Incorrect Selection','modal')
else
    var1 = list_entries{index_selected(1)};
    var2 = list_entries{index_selected(2)};
end 


% --- Executes on button press in plot_button.
function plot_button_Callback(hObject, eventdata, handles)
% hObject    handle to plot_button (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
axes(handles.axes1)
[x,y] = get_var_names(handles);
 evalin('base',['plot(',x,',',y,')'])


% --- Executes on button press in pushbutton3.
function pushbutton3_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
startingFolder = 'C:\Users\';

if ~exist(startingFolder, 'dir')
	% If that folder doesn't exist, just start in the current folder.
	startingFolder = pwd;
end
evalin( 'base', 'clearvars *' )
% Get the name of the mat file that the user wants to use.
defaultFileName = fullfile(startingFolder, '*.mat');

[FileName,PathName] = uigetfile(defaultFileName,'*.mat');
evalin('base',sprintf('load(''%s'')',fullfile(PathName,FileName)))


% --- Executes on button press in pushbutton5.
function pushbutton5_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton5 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
axes(handles.axes3)
[x,y] = get_var_names(handles)
evalin('base',['histogram(',x,')'])