First of all, i have to say that i run a Gui that has to axes, axes1, axes2 .Then i open a file an animate it in the axes1.Then i open another file and animate in axes2. The problem is that i have a button,that when it pushed it must provoke the animation of both files in both axes simultaneously. Is it possible ?
My code for the button is
function compare_animation_Callback(hObject, eventdata, handles)
play_Callback(hObject,eventdata, handles);%axes1
play_results_Callback(hObject,eventdata, handles) %axe2
The problem is in the animation code, because the only file that is animated is the second.The code for the animation is:
handles = startAnimation(~,handles)
global VARS_GLOBAL_ANIM
% pause the animation that might currently be running
pauseAnimation;
% prepare animation controls
frames_total = max([handles.mot.nframes]);
set(handles.slider_animate, 'Enable','on','Max', frames_total+.001,'Value', 1,'SliderStep', [1/frames_total 1/frames_total]);
set(handles.slider_speed, 'Enable','on');
speed = get(handles.slider_speed,'Value');
% set some properties for the animation
%not important
%rehash path
set(gcf,'CurrentAxes',handles.axes_animate);
cla reset;
% start animation
VARS_GLOBAL_ANIM.animation_paused = false;
new_animate(handles.skel,handles.mot,1,speed,{},{},{'updateAnimationSlider',handles.slider_animate},true);
Last the last function that is called is new_animate (...), at the end of the function Start_animation. In the function the only code that refers to figure or axes is :
new_animate_initGraphics;
desired_frame_time = VARS_GLOBAL_ANIM.mot(1).frameTime;
if (~isempty(VARS_GLOBAL_ANIM.figure_camera_file))
h = str2func(VARS_GLOBAL_ANIM.figure_camera_file);
feval(h, gca);
end
if (~isempty(VARS_GLOBAL_ANIM.figure_position))
set(gcf,'position',VARS_GLOBAL_ANIM.figure_position);
end
The function new_animate_initGraphics(if is needed i can upload it)is to big to have it all..Of course the code isn't mine. I can't understand how to use the gca properly in order not to lose one animation and both simultaneously??
Any advice will be helpful.
Related
I want to be able to use WindowKeyPressFcn when a figure is in zoom mode. This question has been asked recently here Overriding ctrl-z behavior in matlab zoom mode, but I have just made a minimal example to demonstrate the same problem (I would have written a comment on their post, but don't have enough rep yet). Does anyone know what we are missing?
function listenWhileZooming
%% Main problem:
% I want any key press to change the color of the plot, even when in Zoom
% mode. I tried to override the mode manager, but don't see any effect.
%%
%% Create and then hide the GUI as it is being constructed
f = figure('Visible','off','units','normalized','Position',[0.1 0.1 0.5 0.5],'windowkeypressfcn',#colorSwap);
%% Override mode manager
hManager = uigetmodemanager(f);
try
set(hManager.WindowListenerHandles, 'Enable', 'off'); % HG1
catch
[hManager.WindowListenerHandles.Enabled] = deal(false); % HG2
end
set(f, 'WindowKeyPressFcn',#colorSwap);
%% Plot something
plot(1,1,'bo')
%% Make the GUI visible
f.Visible = 'on';
%% Key press callback
function colorSwap(source,eventData)
myLine = findobj(source,'type','line');
if all(myLine.Color == [0 0 1])
plot(1,1,'ro')
else
plot(1,1,'bo')
end
end
end
I know it's late, but this is your missing piece.
I assume (as in your code) that f is the figure handle and f.WindowKeyPressFcn has been set by you.
%% Fix
Button = findall(f, 'Tag', 'Exploration.ZoomIn');
OldClickedCallback = Button.ClickedCallback;
Button.ClickedCallback = #(h, e) FixButton(f, OldClickedCallback, f.WindowKeyPressFcn);
Button = findall(f, 'Tag', 'Exploration.ZoomOut');
OldClickedCallback = Button.ClickedCallback;
Button.ClickedCallback = #(h, e) FixButton(f, OldClickedCallback, f.WindowKeyPressFcn);
function Result = FixButton(Figure, OldCallback, NewCallback)
eval(OldCallback);
hManager = uigetmodemanager(Figure); % HG 2 version
[hManager.WindowListenerHandles.Enabled] = deal(false);
Figure.KeyPressFcn = [];
Figure.WindowKeyPressFcn = NewCallback;
Result = true;
end
After f.WindowKeyPressFcn it set by you, it is reset by the zoom handler. So we highjack both zoom buttons (you can do the same with Pan or Rotate) to first call the original callback and then re-apply your fix. Also, don't forget to delete the KeyPressFcn. It's pretty elegant as you can use the same FixButton for all buttons.
I'm building a MATLAB GUI using GUIDE for processing medical images (brain tumor segmentation on MRI scans). As a preprocessing step, the program coregisters different scans, which looks like this:
I now want to display crosshairs on both images as a visual check of the coregistration. The crosshairs should be linked to one another, such that they point to the same pixel in both images. Moreover, it should move when hovering over (or clicking on) one of the images. This is what I want to achieve:
Does a build-in MATLAB function exist that can achieve this? Or, if I have to write it myself, how would one tackle this problem?
I'll use a Toy GUI in order to show how it works :
Let's first try to make it work for the first image only. What you want to achieve is :
When the user clicks on the figure, we want to have access to the location of the mouse click.
Then we want to check if the click was located inside the first image
If it is, we want to update the position of the crossbar, which will be represented by two lines overlayed on the image and crossing at the selected point.
Step 0 : Initial settings
You want to make sure of some details first :
Make sure you add a call to hold on after both your imshow calls, otherwise the crossbars will delete your image instead of overlaying on it.
Step 1 : Getting the position of the mouse click
In your GUI opening function (here it will be SuperDuperGUI_OpeningFcn), you want to add a call to :
set(gcf, 'WindowButtonDownFcn', #getMousePositionOnImage);
This will trigger the function getMousePositionOnImage everytime the user clicks inside your GUI.
Then, you want to add and implement the function getMousePositionOnImage :
function getMousePositionOnImage(src, event)
% Fetch the current handles structure
handles = guidata(src);
% Get the coordinate IN THE AXES UNITS OF AXES1 (Here I chose to define them
% as pixels) of the point where the user clicked
cursorPoint = get(handles.axes1, 'CurrentPoint')
Step 2 : Check if the mouse click is inside the first image
Still in the getMousePositionOnImage function :
% Get the Position of the first image (We're only interested by the width
% and height of the axes1 object)
Img1Pos=get(handles.axes1,'Position')
% Check if inside
if(cursorPoint(1,1)<Img1Pos(3)&&cursorPoint(1,2)<Img1Pos(4)&&cursorPoint(1,1)>=0&&cursorPoint(1,2)>=0)
% Do stuff
end
Step 3 : If the click was inside the first image, update the position of the crossbar
% Check if inside
if(cursorPoint(1,1)<Img1Pos(3)&&cursorPoint(1,2)<Img1Pos(4)&&cursorPoint(1,1)>=0&&cursorPoint(1,2)>=0)
Lines=findobj('Type','line','Parent',handles.axes1);
if isempty(Lines)
% If Lines is empty, we need to create the line objects
line([0 Img1Pos(3)],[cursorPoint(1,2) cursorPoint(1,2)],'Color','g','Parent',handles.axes1);
line([cursorPoint(1,1) cursorPoint(1,1)],[0 Img1Pos(4)],'Color','g','Parent',handles.axes1);
else
% If not, we just update the fields XData and YData of both Lines
Lines(1).XData=[0 Img1Pos(3)]; % Unnecessary but I'll leave it there for clarity
Lines(1).YData=[cursorPoint(1,2) cursorPoint(1,2)];
Lines(2).XData=[cursorPoint(1,1) cursorPoint(1,1)];
Lines(2).YData=[0 Img1Pos(4)]; % Unnecessary but I'll leave it there for clarity
end
end
Result :
Now I'll let you do the last part, which involves linking the two crossbars. Instead of only checking if the click was on first image, you'll check both separately. Then, if it is in one of the image, you'll update both crossbar to the position of the click in the right axes object
Edit
The code below is inspired by the answer of BillBokeey, for which I'm very grateful.
First, do steps 0 and 1 of BillBokeey's solution. Then I put this function in my code:
function getMousePositionOnImage(src, event)
% Fetch the current handles structure
handles = guidata(src);
% Get the coordinate IN THE AXES UNITS OF AXES1 (Here I chose to define them
% as pixels) of the point where the user clicked
cursorPoint1 = get(handles.axes2, 'CurrentPoint');
cursorPoint2 = get(handles.axes3, 'CurrentPoint');
% Get the Position of the first image (We're only interested by the width
% and height of the axes1 object)
Img1Pos = getpixelposition(handles.axes2);
Img2Pos = getpixelposition(handles.axes3);
XLim1 = get(handles.axes2, 'XLim');
YLim1 = get(handles.axes2, 'YLim');
XLim2 = get(handles.axes3, 'XLim');
YLim2 = get(handles.axes3, 'YLim');
% Check if inside
if (cursorPoint1(1)<XLim1(2) && cursorPoint1(2)<YLim1(2) && cursorPoint1(1)>=XLim1(1) && cursorPoint1(1)>=YLim1(1))
Lines1=findobj('Type','line','Parent',handles.axes2);
Lines2=findobj('Type','line','Parent',handles.axes3);
if isempty(Lines1)
% If Lines is empty, we need to create the line objects
line(XLim1,[cursorPoint1(1,2) cursorPoint1(1,2)],'Color','g','Parent',handles.axes2);
line([cursorPoint1(1,1) cursorPoint1(1,1)],YLim1,'Color','g','Parent',handles.axes2);
line(XLim2,[cursorPoint1(1,2) cursorPoint1(1,2)],'Color','g','Parent',handles.axes3);
line([cursorPoint1(1,1) cursorPoint1(1,1)],YLim2,'Color','g','Parent',handles.axes3);
else
% If not, we just update the fields XData and YData of both Lines
Lines1(1).XData=XLim1; % Unnecessary but I'll leave it there for clarity
Lines1(1).YData=[cursorPoint1(1,2) cursorPoint1(1,2)];
Lines1(2).XData=[cursorPoint1(1,1) cursorPoint1(1,1)];
Lines1(2).YData=YLim1; % Unnecessary but I'll leave it there for clarity
Lines2(1).XData=XLim2; % Unnecessary but I'll leave it there for clarity
Lines2(1).YData=[cursorPoint1(1,2) cursorPoint1(1,2)];
Lines2(2).XData=[cursorPoint1(1,1) cursorPoint1(1,1)];
Lines2(2).YData=YLim2; % Unnecessary but I'll leave it there for clarity
end
elseif (cursorPoint2(1)<XLim2(2) && cursorPoint2(2)<YLim2(2) && cursorPoint2(1)>=XLim2(1) && cursorPoint2(1)>=YLim2(1))
Lines1=findobj('Type','line','Parent',handles.axes2);
Lines2=findobj('Type','line','Parent',handles.axes3);
if isempty(Lines2)
% If Lines is empty, we need to create the line objects
line(XLim1,[cursorPoint2(1,2) cursorPoint2(1,2)],'Color','g','Parent',handles.axes2);
line([cursorPoint2(1,1) cursorPoint2(1,1)],YLim1,'Color','g','Parent',handles.axes2);
line(XLim2,[cursorPoint2(1,2) cursorPoint2(1,2)],'Color','g','Parent',handles.axes3);
line([cursorPoint2(1,1) cursorPoint2(1,1)],YLim2,'Color','g','Parent',handles.axes3);
else
% If not, we just update the fields XData and YData of both Lines
Lines1(1).XData=XLim1; % Unnecessary but I'll leave it there for clarity
Lines1(1).YData=[cursorPoint2(1,2) cursorPoint2(1,2)];
Lines1(2).XData=[cursorPoint2(1,1) cursorPoint2(1,1)];
Lines1(2).YData=YLim1; % Unnecessary but I'll leave it there for clarity
Lines2(1).XData=XLim2; % Unnecessary but I'll leave it there for clarity
Lines2(1).YData=[cursorPoint2(1,2) cursorPoint2(1,2)];
Lines2(2).XData=[cursorPoint2(1,1) cursorPoint2(1,1)];
Lines2(2).YData=YLim2; % Unnecessary but I'll leave it there for clarity
end
end
I am working in image processing task using matlab,I have made a slider inside a dialog to apply and update gaussian blur filter on an image which is shown in axes
but it can not apply it,it shows that error
Error in ==> MatlabTestProject>name at 392
axes(handles.axes4);
??? Error while evaluating uicontrol Callback
this is my code
function mygui()
out = dialog('WindowStyle', 'normal', 'Name', 'My Dialog','Resize','off');
hSlider = uicontrol('Style','slider','Min',3,'Max',15,'Value',3,'Callback',#gaussian_blur);
%hListener = addlistener(hSlider,'Value','PostSet',#(s,e) disp('hi'));
function gaussian_blur(s,e,handles)
global imag;
slider_value = get(s,'Value');
slider_value=round(slider_value);
%display(slider_value);
%disp('hello')
%create filter
%sliderValueTxt=num2str(slider_value);
%set(handles.kSizeValueText ,'String',sliderValueTxt);
h = fspecial('gaussian', slider_value,0.5);
imag=imfilter(imag,h,'conv');
axes(handles.axes4);
imshow(imag)
% --------------------------------------------------------------------
function gaussianBlur_Callback(hObject, eventdata, handles)
% hObject handle to gaussianBlur (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
gaussian_dialog_Gui();
You're actually really close! All you need to do is include handles as an argument to the function gaussian_blur when defining the slider's listener object callback.
i.e replace this line: (it looks like a test line though)
hListener = addlistener(hSlider,'Value','PostSet',#(s,e) disp('hi'));
with something like this:
hListener = addlistener(hslider,'Value','PostSet',#(s,e) gaussian_blur(handles));
Just to be sure it works I created a test GUI programmatically using an axes and a slider and it works very well! Actually I changed a bit the filter to see an effect on my test image, but it should work as well in your case:
function GaussianSlider()
clear
clc
close all
handles.Image = imread('peppers.png');
handles.fig = figure('Position',[500 500 600 600],'Units','pixels');
handles.axes1 = axes('Units','pixels','Position',[50 100 400 400]);
handles.slider = uicontrol('Style','slider','Position',[50 50 400 20],'Min',3,'Max',15,'Value',3);%// I commented this for the purpose of demonstration. 'Callback',#gaussian_blur(handles));
%// That's the important part: add 'handles' as input argument to
%// gaussian_blur.
handles.Listener = addlistener(handles.slider,'Value','PostSet',#(s,e) gaussian_blur(handles));
imshow(handles.Image,'Parent',handles.axes1);
guidata(handles.fig);
function gaussian_blur(handles)
slider_value = round(get(handles.slider,'Value'));
%// I modified a bit the filter to see the effect
h = fspecial('gaussian',slider_value,slider_value);
handles.Image=imfilter(handles.Image,h,'conv');
axes(handles.axes1);
imshow(handles.Image)
end
end
If we look at 2 screenshots (i.e. 2 different slider positions):
and after moving the slider:
That's it! Hope that helps! If something is unclear please tell me.
Oh and in case you do not know: The actual callback of a slider is only executed when you release the button or press either arrow. As long as you hold the slider and move it, it's only the listener's callback that will be executed.
I'm making a GUI with guide. I have a push button the user clicks and the callback is as folows : (what matters are the tirst two lines really...
function SetParticleRoiSize_Callback(hObject, eventdata, handles)
% hObject handle to SetParticleRoiSize (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);
particleroiSize=imrect;% - draw a rectagle around the particle to get a meausr eof ROI size
roiPoints=getPosition(particleroiSize); %-get tha parameters fo the rectanlge
partX1 = round(roiPoints(1));
partY1 = round(roiPoints(2));
partX2 = round(partX1 + roiPoints(3));
partY2 = round(partY1 + roiPoints(4)); % these are the ROi positions in pixels
roiHeight = round(roiPoints(3)); % - these are just the ROI width and height
roiWidth = round(roiPoints(4));
handles=guidata(hObject); %_ update all the handles...
handles.partX1=partX1;
handles.partX2=partX2;
handles.partY1=partY1;
handles.partY2=partY2;
handles.roicenterX = (partX1 + round(roiPoints(3))/2);
handles.roicenterY= (partY1 + round(roiPoints(4))/2);
handles.roiHeight = roiHeight;
handles.roiWidth = roiWidth;
current_slice = round(get(handles.Image_Slider,'Value'));
handles.current_slice=current_slice;
particleImage=handles.Image_Sequence_Data(partY1:partY2,partX1:partX2,current_slice);
handles.particleImage=particleImage;
set(handles.RoiSizeDisplay,'String',['Particle ROI is ',' ',num2str(roiHeight),' ', ' by ',num2str(roiWidth)] );
guidata(hObject,handles); %- at this point we now have the particle in the roi and the size of the roi stored.
The issue I am having is that when the user clicks the button the first time, nothing happens (i.e. the imrect line seems to not get called at all). When the user clicks the button again then they can draw a rectangle on the image but my program throws out an error
Error in imrect (line 83)
[h_group,draw_api] = imrectAPI(varargin{:});
Error in SemiAutomated_Fionv2p2_5>SetParticleRoiSize_Callback (line 291)
particleroiSize=imrect;% - draw a rectagle around the particle to get a meausr eof ROI size
Error in gui_mainfcn (line 96)
feval(varargin{:});
Error in SemiAutomated_Fionv2p2_5 (line 56)
gui_mainfcn(gui_State, varargin{:});
Error in
#(hObject,eventdata)SemiAutomated_Fionv2p2_5('SetParticleRoiSize_Callback',hObject,eventdata,guidata(hObject))
Error while evaluating uicontrol Callback
I guess the error is because there is no imrect created on the first button click.
Can someone please explain to me why this button needs to be clicked twice to work? (and even then it still gives an error...)
thanks...
-j
It looks like this call:
handles=guidata(hObject); %_ update all the handles...
is incorrectly used; you might need to replace it with guidata(hObject,handles) in order to actually update the handles structure. Moreover, since you already call guidata(hObject,handles) at the end of the callback you can delete this line altogether I think.
As it's currently implemented, you:
1) get the handles structure with handles = guidata(hObject);
2) store information in it
particleroiSize=imrect;% - draw a rectagle around the particle to get a meausr eof ROI size
roiPoints=getPosition(particleroiSize); %-get tha parameters fo the rectanlge
partX1 = round(roiPoints(1));
partY1 = round(roiPoints(2));
partX2 = round(partX1 + roiPoints(3));
partY2 = round(partY1 + roiPoints(4)); % these are the ROi positions in pixels
roiHeight = round(roiPoints(3)); % - these are just the ROI width and height
roiWidth = round(roiPoints(4));
3) then call it again (handles = guidata(hObject))`.
Hence on your second call to retrieve the data you have not previously updated it, so I guess Matlab does not like it.
It might not be the specific cause of your error but I think it's worth checking.
I had 3 different axes in my figure. The first version of the program only had 1 axes so it worked fine. After adding the other axes to the GUI (via GUIDE) when I ran just imrect.. I think it was not choosing the axes I wanted..I added a parent handles.correct axes and now it works perfectly!
I'd like to save matrices which are input via GUI pushbuttons in a 3D matrix. for example: I click button 1 a 2-2 matrix is put in the first slice of the 3D matrix. I than click button 3 and a different 2-2 matrix is put in the second slice. SO on and so on. I hope this is clear enough. The problem I have is that I'm not an experienced programmer. I currently initialize a zeros matrix as follows in the opening func:
storageMatrix = ones(2,2,100);
setappdata(0, 'storageMatrix', storageMatrix);
I have put a function updateStorageMatrix in the main script like this, mind you this isn't finished yet.
function updateStorageMatrix
storageMatrix = getappdata(0, 'storageMatrix');
and than when I look at my code of pushbutton 1 for example it looks like this:
% --- Executes on button press in Add_Straightduct.
function Add_Straightduct_Callback(hObject, eventdata, handles)
%prompt command for k number and length
prompt = {'k0:','Length:'};
dlg_title = 'Straight Duct specs';
num_lines = 1;
SDelements = {'0','0'};
Straightduct = inputdlg(prompt,dlg_title,num_lines,SDelements)
%insert values in function
sizeStorageMatrix = size(getappdata(0,'storageMatrix')); %get size of the storage matrix
dimT = sizeStorageMatrix(1,3); %take the number of matrices
if dimT==1
straightDuct = straight_duct(str2num(SDelements{1}), str2num(SDelements{2}), Mach_Frange(1,1))
setappdata(handles.updateStorageMatrix,'storageMatrix', storageMatrix(1:2, 1:2, 1))=straight_duct(str2num(SDelements{1}), str2num(answer{2}), Mach_Frange(1,1))
dimT+1
else
setappdata(0,'storageMatrix', storageMatrix(1:2, 1:2, dimT+1))=straight_duct(str2num(SDelements{1}), str2num(answer{2}), Mach_Frange(1,1))
dimT+1
end
the straight_duct() is a function I used in the script when calculating the mufflers, I have several of those functions, I am not sure if that's the way to work when using GUI. I just hope you get the idea of what I'm trying to achieve and help me on my way. So I can actually make a UI for my script :)
This assumes you've initialized the storageMatrix elsewhere in the GUI like this...
handles.storageMatrix = zeros(2,2,100);
guidata(hObject,handles); % Must call this to save handles so other callbacks can access the new element "storageMatrix"
Then in your first button's callback...
% --- Executes on button press in Add_Straightduct.
function Add_Straightduct_Callback(hObject, eventdata, handles)
.
. % Whatever initializations you need to do
.
localStorageMatrix = handles.storageMatrix; %load the storageMatrix being used by other callbacks/functions
.
. % Whatever you need to do to generate the new 2x2 matrix "slice"
.
localStorageMatrix(:,:,end+1) = newSlice; % appends the new slice to the end of the, indexing using colons assumes newSlice is of the same first and second dimension as other slices in localStorageMatrix
handles.storageMatrix = localStorageMatrix; % overwrite the storageMatrix in handles with the contents of the new localStorageMatrix
guidata(hObject,handles); % save the handles struct again now that you've changed it
Alternatively, you could have just used the handles.storageMatrix throughout, without including a localStorageMatrix but I've included it for emphasis.