xline Delete Issue

Batuhan Coskun

Hi everyone,

I face a problem, when I delete xline in figure. I want to create new xline when push the button, then remove the old xline. I use GUI button for this. When I push the button, it is work for two steps. However, when I push it third time, it is not remove the xline. Then, it works up to two steps. After that I face this problem again. Only one curve should remain in the figure. However, It holds ('Curve 2, Curve 4, Curve 5, Curve 7, Curve 9......') in the figure. If I write delete and create command in OML Command Window, I don't face any problem. I face a problem, when I call this command with function. Is this a bug about Compose ?

 

I am sharing this code in the below.

global second_line;

global sc_Value;

function button_callback(handle,callstate)

      global second_line;

      global sc_Value;

      try

           delete(second_line);

      end

      second_line=xline(get(sc_Value,'value'));

end

RSGarciarivas

Hi Batuhan,

Can you share the full GUI so I can test a possible solution on my side?

Rafael

Batuhan Coskun

Hi Rafael Sánchez,

I am sorry for the late reply. I can't share the full GUI model. However, I am sharing an example about it. You can examine it below.

 

-----------------------------------------------------------------------------------------------------------

global first line

 

Dialog = figure ('units', 'pixels', 'position', [0 0 410 310]...

,'numbertitle','off', 'name','Dialog');

undock (Dialog);

 

uiPushButton = uicontrol ('parent', Dialog, 'style', 'pushbutton'...

 ,'string','TEST'...

 ,'backgroundimage',''...

 ,'callback', 'uiPushButton_callback', 'interruptible','off'...

 ,'enable', 'on'...

 ,'units', 'normalized', 'position',[0.30 0.20 0.25 0.10]...

 ,'fontname', 'MS Shell Dlg', 'fontangle','regular', 'fontweight', 'normal', 'fontsize',8.25 ...

 ,'backgroundcolor', [246 246 246] ...

 , 'tag','','tooltipstring','','userdata',[],'visible','on');

 

figure 2

x = [0 1 2 3 4 5]

y = [5 2 8 4 1 12]

plot(x,y)

 

function uiPushButton_callback(handle,callstate)

   global first_line

   try

       delete(first_line);

   end

   first_line = xline(rand,'color','k');

end

RSGarciarivas

Batuhan Coskun said:

Hi Rafael Sánchez,

I am sorry for the late reply. I can't share the full GUI model. However, I am sharing an example about it. You can examine it below.

 

-----------------------------------------------------------------------------------------------------------

global first line

 

Dialog = figure ('units', 'pixels', 'position', [0 0 410 310]...

,'numbertitle','off', 'name','Dialog');

undock (Dialog);

 

uiPushButton = uicontrol ('parent', Dialog, 'style', 'pushbutton'...

 ,'string','TEST'...

 ,'backgroundimage',''...

 ,'callback', 'uiPushButton_callback', 'interruptible','off'...

 ,'enable', 'on'...

 ,'units', 'normalized', 'position',[0.30 0.20 0.25 0.10]...

 ,'fontname', 'MS Shell Dlg', 'fontangle','regular', 'fontweight', 'normal', 'fontsize',8.25 ...

 ,'backgroundcolor', [246 246 246] ...

 , 'tag','','tooltipstring','','userdata',[],'visible','on');

 

figure 2

x = [0 1 2 3 4 5]

y = [5 2 8 4 1 12]

plot(x,y)

 

function uiPushButton_callback(handle,callstate)

   global first_line

   try

       delete(first_line);

   end

   first_line = xline(rand,'color','k');

end

Hi Batuhan. Instead of trying to delete the line, I would toggle its visibility off. You can try something like this:

close all, clear, clc

Dialog = figure('units', 'pixels', 'position', [0 0 410 310]...
,'numbertitle','off', 'name','Dialog');

undock(Dialog);

uiPushButton = uicontrol('parent', Dialog, 'style', 'pushbutton'...
,'string','TEST'...
,'backgroundimage',''...
,'callback', 'uiPushButton_callback', 'interruptible','off'...
,'enable', 'on'...
,'units', 'normalized', 'position',[0.30 0.20 0.25 0.10]...
,'fontname', 'MS Shell Dlg', 'fontangle','regular', 'fontweight', 'normal', 'fontsize',8.25 ...
,'backgroundcolor', [246 246 246] ...
, 'tag','','tooltipstring','','userdata',[],'visible','on');

% Create new figure and axes
fig = figure(2);
ax = axes(fig, 'tag', 'Axes');

% Mock data for figure
x = [0 1 2 3 4 5];
y = [5 2 8 4 1 12];

% Plot mock data on axes
h = plot(ax, x,y);

function uiPushButton_callback(handle,callstate)
    
    % Get axes handle within this function
    ax = findobj('tag', 'Axes');
    % Get handles of lines currently present
    presentLines = get(ax, 'children');
    
    % Disable most recently-added line if there's more than 1
    if numel(presentLines) > 1
        lastLine = get(ax, 'children')(1);
        set(lastLine, 'visible', 'off');
    end
    
    % Create new line
    newLine = xline(ax, rand, 'color', 'k');
    
end

I'm attaching the script as well.

Rafael