hORİZONTAL AND VERTCAL WİTH SAME THİCKNESS BUT DİFFERENT OUTPUTS İN GUİDE

Hello everyone,

İ am working on a project where the aim is to find the treshold of the finger perception due to vibration when the finger enters a particular region (line with different thickness).İ have two orientations . Horizontal and vertical. The experiment is done on a touchscreen.

I am experiencing two issues;

1) Even though the horizontal and vertical lines have the same thickness the horizontal line distinctly looks bigger.

2)The second one is that i did the experiment in two different touchscreens

2.a) Display resolution 1920x1080(recommended) - First screen

The miinimum thickness that can be detected by the mouse is:

• When vertical: 0.03
• When horizontal: 0.02

2b) Display resoluton 1366 x 768 (recommended) - second screen

• When vertical: 0.02
• When horizontal: 0.01

İ would like to use both the same thickness with horizontal and vertical. The experiment is done in Guide

[Geoff Hayes]

@Franck paulin Ludovig pehn Mayo - can you post a screen shot of the issue and the code used to generate the horizontal and vertical lines? Also, what do you mean by The miinimum thickness that can be detected by the mouse is? Are you moving the mouse and if so, what code are you using to determine that the mouse detected the line?

[Franck paulin Ludovig pehn Mayo]

@Geoff Hayes Everytime the pointer/cusor enters a specific region (band line) , it activates the motor vibrations and the region turns green.The minimum thickness that can de detected by the mouse is when the latter inside the region turns the region green and activate the motors.

When the width is so small the cursor cannot detect that thickness. So i am looking fot the smallest width that the cursor could detect . Yes, i am indeed moving a mouse

İ have attached the excel file.

Two screenshots

horizontal and vertical ( same thickness)

function varargout = franck_guide(varargin)
% FRANCK_GUIDE MATLAB code for franck_guide.fig
%      FRANCK_GUIDE, by itself, creates a new FRANCK_GUIDE or raises the existing
%      singleton*.
%
%      H = FRANCK_GUIDE returns the handle to a new FRANCK_GUIDE or the handle to
%      the existing singleton*.
%
%      FRANCK_GUIDE('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in FRANCK_GUIDE.M with the given input arguments.
%
%      FRANCK_GUIDE('Property','Value',...) creates a new FRANCK_GUIDE or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before franck_guide_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to franck_guide_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 franck_guide

% Last Modified by GUIDE v2.5 22-Feb-2022 13:54:14

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
    'gui_Singleton',  gui_Singleton, ...
    'gui_OpeningFcn', @franck_guide_OpeningFcn, ...
    'gui_OutputFcn',  @franck_guide_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 franck_guide is made visible.
function franck_guide_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 franck_guide (see VARARGIN)

% Choose default command line output for franck_guide
handles.output = hObject;
% Plot patch on uiaxes
%hold on

% Read experiment data from a CSV file

[~,~,data] = xlsread('excel_data_final.xlsx');
data(1,:) = []; % remove the header line

% randomly permute the rows of data without repeating the value:
data = data(randperm(size(data,1)),:);

numeric_data = cell2mat(data(:,[1 2 3 4 6]));

handles.v_thickness_1 = numeric_data(:,1); % numeric
handles.v_thickness_2 = numeric_data(:,2);
handles.h_thickness_1 = numeric_data(:,3);
handles.h_thickness_2 = numeric_data(:,4);
handles.amplitude = data(:,5); % cell array of char vectors
handles.v_or_h_array = numeric_data(:,5);
handles.f_df = data(:,7);


handles.exp_counter = 1;
set(handles.text_exp_counter,'String',num2str(handles.exp_counter));

handles.region1 = [];

% Create the Arduino serial object
handles.arduinoObj = serialport('COM3', 38400);
configureTerminator(handles.arduinoObj,'CR/LF');
%
for i=1:8
    handles.message = readline(handles.arduinoObj);
    disp(handles.message)
end

create_patch(handles);



% Update handles structure
%guidata(hObject, handles);

% UIWAIT makes Hapticfinal wait for user response (see UIRESUME)
% uiwait(handles.finger);

function create_patch(handles)
if ishandle(handles.region1)
    delete(handles.region1);
end
v_or_h = handles.v_or_h_array(handles.exp_counter);
if v_or_h == 0 % Vertical line
    v_thick1 = handles.v_thickness_1(handles.exp_counter);
    v_thick2 = handles.v_thickness_2(handles.exp_counter);
    handles.region1 = patch( ...
        'Parent',handles.axes1, ...
        'XData',[v_thick1 v_thick2 v_thick2 v_thick1], ...
        'YData',[-10 -10 10 10], ...
        'FaceColor','red');
     set(handles.axes1,'XLim',[-5 0],'YLim',[-10 10]);
% set(handles.axes1,'XLim',[-10 10],'YLim',[-10 10]);
else % Horizontal line
    h_thick1 = handles.h_thickness_1(handles.exp_counter);
    h_thick2 = handles.h_thickness_2(handles.exp_counter);
    handles.region1 = patch( ...
        'Parent',handles.axes1, ...
        'XData',[-10 10 10 -10], ...
        'YData',[h_thick1 h_thick1 h_thick2 h_thick2], ...
        'FaceColor','red');
     set(handles.axes1,'YLim',[0 5],'XLim',[-10 10]);
% set(handles.axes1,'XLim',[-10 10],'YLim',[-10 10]);
end
set(handles.axes1,'XGrid','on','YGrid','on');
axis(handles.axes1,'equal');
% Update handles structure
guidata(handles.finger,handles);
% call the button motion fcn to update the new patch's color:
finger_WindowButtonMotionFcn(handles.finger);



% UIWAIT makes franck_guide wait for user response (see UIRESUME)
% uiwait(handles.finger);


% --- Outputs from this function are returned to the command line.
function varargout = franck_guide_OutputFcn(hObject, eventdata, handles)
% varargout  cell array for returning output args (see VAR ARGOUT);
% 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 button press in Start_button.
function Start_button_Callback(hObject, eventdata, handles)
% hObject    handle to Start_button (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
handles.fileID = fopen('Start_Stop.txt','w');
handles.t = timer('ExecutionMode', 'fixedRate', ...
    'Period', 0.5, ...
    'TasksToExecute', Inf, ...
    'TimerFcn', {@timerCallback, handles.finger});
start(handles.t);
set(handles.Start_button,'Enable','off'); % -> Disable the button
guidata(hObject,handles);% -----> do this to save the updated handles object

 
function timerCallback(~,~,f)
handles = guidata(f);
 %fprintf(fileID,'(X, Y, time) = (%g, %g, %s)\n', get(0, 'PointerLocation'), datetime('now'));
 fprintf(handles.fileID,'(X, Y, time) = (%g, %g, %s, %s, %s)\n', get(0, 'PointerLocation'), datetime('now'), ...
    handles.amplitude{handles.exp_counter},handles.f_df{handles.exp_counter});
%fprintf('calling timer callback\n');


% --- Executes on button press in Next_button.
function Next_button_Callback(hObject, eventdata, handles)
% hObject    handle to Next_button (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)uiconfirm(handles.UIFigure,'Are You sure?','Confirm Close',...
handles = guidata(hObject);

new_counter = handles.exp_counter + 1;

if new_counter > numel(handles.v_thickness_1)
   msgbox('Experiment is Done!','DONE'); 
  
    return
end
f = msgbox('Operation Completed','NEXT');
 set(handles.text_exp_counter,'String',num2str(handles.exp_counter));
 handles.exp_counter = new_counter;
% delete the old patch and create a new one:
create_patch(handles);


% --- Executes on mouse motion over figure - except title and menu.
function finger_WindowButtonMotionFcn(hObject, eventdata, handles)
% hObject    handle to finger (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
handles = guidata(hObject);
pos = get(hObject, 'currentpoint'); % get mouse location on figure
global x;
global y;
x = pos(1); 
y = pos(2); % assign locations to x and y
set(handles.xloc, 'string', ['x loc:' num2str(x)]); % update text for x loc
set(handles.yloc, 'string', ['y loc:' num2str(y)]); % update text for y loc 
% Determine if mouse is within the region

p_x = get(handles.region1,'XData');
p_x = p_x([1 2]);
p_y = get(handles.region1,'YData');
p_y = p_y([1 3]);

ax_xl = get(handles.axes1,'XLim');
ax_yl = get(handles.axes1,'YLim');

ax_units = get(handles.axes1,'Units');
if ~strcmp(ax_units,'pixels')
    set(handles.axes1,'Units','pixels')
end
ax_pos = get(handles.axes1,'Position'); % axes1 position in pixels
if ~strcmp(ax_units,'pixels')
    set(handles.axes1,'Units',ax_units);
end

% convert the patch XData and YData from axes coordinates to figure coordinates in pixels
p_x = (p_x-ax_xl(1))/(ax_xl(2)-ax_xl(1))*ax_pos(3)+ax_pos(1);
p_y = (p_y-ax_yl(1))/(ax_yl(2)-ax_yl(1))*ax_pos(4)+ax_pos(2);

if x >= p_x(1) && x <= p_x(2) && y >= p_y(1) && y <= p_y(2)
    set(handles.region1,'FaceColor','g');
    
        writeline(handles.arduinoObj, handles.amplitude{handles.exp_counter})
else
    set(handles.region1,'FaceColor','r');
    writeline(handles.arduinoObj, '0&1!')
end

[Geoff Hayes]

@Franck paulin Ludovig pehn Mayo - what happens if you use square instead of equal in the code to set the axis style?

[Franck paulin Ludovig pehn Mayo]

@Geoff Hayes what do you mean?

[Geoff Hayes]

@Franck paulin Ludovig pehn Mayo instead of

axis(handles.axes1,'equal');

try

axis(handles.axes1,'square');

[Franck paulin Ludovig pehn Mayo]

@Geoff Hayes Thank you. "Square" is fixing it.

Answer 1

[Geoff Hayes]

Fix seems to be to update the style of the axis...changing the code from

axis(handles.axes1,'equal');

to

axis(handles.axes1,'square');