Live Plotten in Matlab mit Schieberegler

Question

Ich habe eine GUI mit einem Graphen und einem Schieberegler. Ich habe ein Signal und ich verwende Filter auf dieses Signal, der Schieberegler bestimmt die Abschaltfrequenz des Filters. Ich möchte live das Signal plotten, wenn der Slider bewegt wird.

unten ist der Code meiner GUI.

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

 
% Last Modified by GUIDE v2.5 16-Jul-2016 17:10:15 
 

 
% Begin initialization code - DO NOT EDIT 
 

 

 
gui_Singleton = 1; 
 
gui_State = struct('gui_Name',  mfilename, ... 
 
        'gui_Singleton', gui_Singleton, ... 
 
        'gui_OpeningFcn', @gui_OpeningFcn, ... 
 
        'gui_OutputFcn', @gui_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 gui is made visible. 
 
function gui_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 gui (see VARARGIN) 
 

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

 
% Update handles structure 
 
guidata(hObject, handles); 
 

 
% UIWAIT makes gui wait for user response (see UIRESUME) 
 
% uiwait(handles.figure1); 
 

 

 
% --- Outputs from this function are returned to the command line. 
 
function varargout = gui_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 slider movement. 
 
function slider1_Callback(hObject, eventdata, handles) 
 
% hObject handle to slider1 (see GCBO) 
 
% eventdata reserved - to be defined in a future version of MATLAB 
 
% handles structure with handles and user data (see GUIDATA) 
 

 
% Hints: get(hObject,'Value') returns position of slider 
 
%  get(hObject,'Min') and get(hObject,'Max') to determine range of slider 
 

 
sliderValue = get(handles.slider1,'Value'); % slider value 
 
signal = [....] % my signal 
 
time = [...] % my time 
 

 
    f = ltiFilter.PT1(); % my another class where i have filter. 
 

 
    f.fc = slivervalue; % frequncy from slider. 
 
    filtered_signal = f.eval(signal) % applying of filter. 
 

 
    
 
% --- Executes during object creation, after setting all properties. 
 
function slider1_CreateFcn(hObject, eventdata, handles) 
 
% disp(sprintf(get(hObject,'String'))); 
 
%h = uicontrol('style','slider'); 
 
%get(handles.slider1,'Value'); 
 
%fprintf('%d\n', r); 
 
% hObject handle to slider1 (see GCBO) 
 
% eventdata reserved - to be defined in a future version of MATLAB 
 
% handles empty - handles not created until after all CreateFcns called 
 

 
% Hint: slider controls usually have a light gray background. 
 
if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) 
 
    set(hObject,'BackgroundColor',[.9 .9 .9]); 
 
end 
 

 

 
% --- Executes on button press in pushbutton1. 
 
function pushbutton1_Callback(hObject, eventdata, handles) 
 
% hObject handle to pushbutton1 (see GCBO) 
 
% eventdata reserved - to be defined in a future version of MATLAB 
 
% handles structure with handles and user data (see GUIDATA) 
 

 

 
% --- Executes on button press in pushbutton2. 
 
function pushbutton2_Callback(hObject, eventdata, handles) 
 
% hObject handle to pushbutton2 (see GCBO) 
 
% eventdata reserved - to be defined in a future version of MATLAB 
 
% handles structure with handles and user data (see GUIDATA) 
 

 

 
function edit1_Callback(hObject, eventdata, handles) 
 
% hObject handle to edit1 (see GCBO) 
 
% eventdata reserved - to be defined in a future version of MATLAB 
 
% handles structure with handles and user data (see GUIDATA) 
 

 
% Hints: get(hObject,'String') returns contents of edit1 as text 
 
%  str2double(get(hObject,'String')) returns contents of edit1 as a double 
 

 

 
% --- Executes during object creation, after setting all properties. 
 
function edit1_CreateFcn(hObject, eventdata, handles) 
 
% hObject handle to edit1 (see GCBO) 
 
% eventdata reserved - to be defined in a future version of MATLAB 
 
% handles empty - handles not created until after all CreateFcns called 
 

 
% Hint: edit controls usually have a white background on Windows. 
 
%  See ISPC and COMPUTER. 
 
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) 
 
    set(hObject,'BackgroundColor','white'); 
 
end 
 
function axes1_CreateFcn(hObject, eventdata, handles) 
 
% hObject handle to axes1 (see GCBO) 
 
% eventdata reserved - to be defined in a future version of MATLAB 
 
% handles empty - handles not created until after all CreateFcns called 
 

 
% Hint: place code in OpeningFcn to populate axes1

mein Signal ist in Funktion slider1_Callback, unter meinem gezeigt GUI ist.

wenn ich den Regler bewegen i der Schieber Wert soll automatisch geplottet „f.fc“ und der filtered_signal zugeführt werden, um aktualisiert werden und werden. Irgendwelche Vorschläge werden hilfreich sein.

Answer 1

Nachdem Sie das Signal mit dem neuen Grenzfrequenz berechnet haben, werden Sie den Plot aktualisieren müssen/Achsen Daten:

% set the x- and the y-value 
set(handles.axes1, 'XData',filtered_signal.x, 'YData',filtered_signal.y); 
% update the handles-structure to store the data 
guidata(hObject,handles); 

haben auch Blick auf die folgenden Beispiele:

http://de.mathworks.com/help/matlab/creating_guis/gui-that-accepts-parameters-and-generates-plots.html

http://de.mathworks.com/help/matlab/creating_guis/automatically-refresh-plot-in-a-guide-gui.html

vielleicht werden die meisten Ihrer Fragen hier beantwortet.