How can i delete any signal shown in figure by using Push button in a GUI? Actually i want to select the sign

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Muhammad Saim Nasir Siddiqui 2015-2-20

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https://ww2.mathworks.cn/matlabcentral/answers/179450-how-can-i-delete-any-signal-shown-in-figure-by-using-push-button-in-a-gui-actually-i-want-to-selec

编辑： Muhammad Saim Nasir Siddiqui 2015-2-28

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Joseph Cheng 2015-2-26

there are some ways to do this. One question is how are these bars being plotted? are they individual plots as if we performed a hold on (such that each one can be found as the axes children), or are they concatenated into a single plot/barchart?

Muhammad Saim Nasir Siddiqui 2015-2-27

编辑：Muhammad Saim Nasir Siddiqui 2015-2-28

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yes these are individually ploted.. first i give bandwidth,select band and give a center freq and then press generate pushbutton (to plot a rectangle as shown in fig.) here is the code for " Generate" push button call back

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

bw=str2num(get(handles.bw,'String')); %f0=str2num(get(handles.f0,'String')); l=str2num(get(handles.frequency,'String')); m=get(handles.frequency,'value'); f0=l(m);

y=0; z=0; %x=0;0 for k=1:50

    if handles.f00(k)==f0
        %msgbox('Center Frequency Already Occupied')
        z=1;
    end
end
switch z
    case 0
    handles.count=handles.count+1;
    i=handles.count;
    handles.bww(i)=bw;
    handles.f00(i)=f0;
    bw=bw*1e9;
    f0=f0*1e12;
    q=f0/bw;
    f1=f0*(sqrt(1+1/(4*q^2))-1/(2*q));
    w2=3e8/f1;
    f2=f0*(sqrt(1+1/(4*q^2))+1/(2*q));
    w1=3e8/f2;
    handles.w11(i)=w1;
    handles.w22(i)=w2;
        width=w2-w1;
        handles.width(i)=width;
        %axes(handles.axes1);
        %rectangle('position',[w1,0,width,4],'FaceColor','g');
        if handles.s==1
            axes(handles.axes1);
            rectangle('position',[w1,0,width,4],'FaceColor','g');
            axis([1460e-9,1530e-9,0,7]);
        elseif handles.c==1
            axes(handles.axes1);
            rectangle('position',[w1,0,width,4],'FaceColor','g');
            axis([1530e-9,1565e-9,0,7]);
        elseif handles.l==1
            axes(handles.axes1);
            rectangle('position',[w1,0,width,4],'FaceColor','g');
            axis([1565e-9,1625e-9,0,7]);
        end
        xlabel('wavelength');
        ylabel('power');
        guidata(hObject, handles);
    case 1
        msgbox('Center Frequency Already Occupied')
end