Matrix dimensions must agree

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AYDOGAN CAK 2019-4-25

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https://ww2.mathworks.cn/matlabcentral/answers/458535-matrix-dimensions-must-agree

关闭： MATLAB Answer Bot 2021-8-20

Error in TEZ2>HESAPLA_Callback (line 546)

Pg=(exp((77.3455+(0.0057*(273+T1)))-(7235/(273+T1)))/((273+T1)^8.2))/1000;

Error in gui_mainfcn (line 95)

feval(varargin{:});

Error in TEZ2 (line 42)

gui_mainfcn(gui_State, varargin{:});

When I run the Calculate button in the GUI interface with I'm getting such errors when I don't enter values in edits .What should i ?

Part of my codes:

function HESAPLA_Callback(hObject, eventdata, handles)

msgbox('Sonuçlar için ilgili değerleri giriniz, girdiyseniz bu mesajı dikkate almayınız.')

%Ekserji No.1

m1=str2num(get(handles.m1,'String'));%havanın giriş debisi

T1=str2num(get(handles.T1,'String'));%havanın giriş sıcaklığı

P1=str2num(get(handles.P1,'String'));%havanın giriş basıncı(atmosfer basıncı)

Q1=str2num(get(handles.Q1,'String'));%havanın nemini yüzdesel olarak giriniz.

Cpa=1.005;

Cpv=1.84;

T0=293;

Ra=0.287;

Rv=0.4615;

P0=101.325;

W0=0.0072457;

Q=Q1/100;

Pg=(exp((77.3455+(0.0057*(273+T1)))-(7235/(273+T1)))/((273+T1)^8.2))/1000;

Pv=(Q*Pg);

W=(0.622*Pv)/(P1-Pv);

Ea=((Cpa+(W*Cpv))*((T1+273)-T0))-(T0*(((Cpa+(Cpv*W))*log((T1+273)/T0))-((Ra+(Rv*W))*log(P1/P0))))+(T0*(((Ra+(W*Rv))*log((1+(1.6078*W0))/(1+(1.6078*W))))+(1.6078*Ra*W*log(W/W0))));

E1=m1*Ea;

set(handles.E1,'String',E1);

%Ekserji No.2(Kömür)

m2=str2num(get(handles.m2,'String'));%kömürün giriş debisi

hfg=str2num(get(handles.hfg,'String'));%termodinamik tablolarından kömürün giriş sıcaklığına göre su buharının entalpisi(hfg)

Q2=str2num(get(handles.Q2,'String'));%kömürün nemini yüzdesel olarak giriniz.Örneğin:%60 ise 0.6 yazınız.

B=1.1226;

Hu=6800;

ysu=Q2/100;

yS2=0.027;

yk=0.0743;

Ey=B*(Hu*4.18+hfg*ysu)+(9683*yS2)+(22000*yk)+(340*ysu);

E2=m2*Ey;

set(handles.E2,'String',E2);

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Adam 2019-4-25

What do you expect to happen if you press the Calculate button without having entered values in your edit boxes since you algorithm uses those? Do you have default values you expect to be used? Or just don't allow the calculation to progress if they haven't been filled in if this is not a valid situation.

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