[問題] GUI繪圖已回收

看板MATLAB作者hnxu (南有以)時間16年前 (2009/06/13 04:07)推噓0(0推 0噓 0→)

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我最近寫了一個提供參數讓其繪圖的GUI介面可是按下開始鍵後圖只能畫一次調整參數後按第二次開始圖不會被蓋過去要重開才能再跑以下是我的程式碼想請問一下各位大大問題出在哪? ------------------------------------------ gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @matlab_OpeningFcn, ... 'gui_OutputFcn', @matlab_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 function Startpushbutton_Callback(hObject, eventdata, handles) % hObject handle to Startpushbutton (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global V0 w k R L C; cond = [R L C]; u0 = [0 1]; tspan = [0 10]; if get(findobj('tag','DCradiobutton'),'value') == 1 V = @(t) V0; elseif get(findobj('tag','ACradiobutton'),'value') == 1 V = @(t) V0*sin(w*t+k); end if get(findobj('tag','RLradiobutton'),'value') == 1 [t, u] = RL(cond, u0, V, tspan); elseif get(findobj('tag','RCradiobutton'),'value') == 1 [t, u] = RC(cond, u0, V, tspan); elseif get(findobj('tag','RLCradiobutton'),'value') == 1 [t, u] = RLC(cond, u0, V, tspan); end axes(findobj('tag','IVT')); plot(t,u(:,2),'r',t,V(t),'b'); xlabel('Time(sec)'); ylabel('I(A),V(V)'); title('電流及電壓與時間關係圖'); legend('電流','電壓'); axes(findobj('tag','VI')); plot(t,u(:,1)); xlabel('Time(sec)'); ylabel('I(A),V(V)'); title('電壓與電流關係圖'); axes(findobj('tag','QT')); plot(V(t),u(:,2)); xlabel('Time(sec)'); ylabel('Q(C)'); title('電荷與時間關係圖'); --------------------------------------------------- MATLAB中的警告 ??? Error using ==> axes Invalid object handle Error in ==> matlab>Startpushbutton_Callback at 104 axes(findobj('tag','IVT')); Error in ==> gui_mainfcn at 96 feval(varargin{:}); Error in ==> matlab at 42 gui_mainfcn(gui_State, varargin{:}); Error in ==> guidemfile>@(hObject,eventdata)matlab('Startpushbutton_Callback',hObject,eventdata,guidata(hObject)) ??? Error while evaluating uicontrol Callback -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.112.4.234