How can i solve the vertcat error.

Changing_Parameter = '(Gc=STC  Tc=Variable)';

DataSheet_Values = ...
[Model;Area;Pmpp_stc;Voc_stc;Isc_stc;Impp_stc;Vmpp_stc;' ';Ns;Ki;Kv;Tc;Gc;' ';...
a;a1;a2;Pe;' ';D1Rs;D1Rp;D2Rs;D2Rp;Eg;];
xlswrite(Sim_Results,DataSheet_Values,'Tvar','C3')

tempvec = simout_D1_Tvar(1,10:13);
VOC = zeros(1,4);
ISC = zeros(1,4);
Pmpp = zeros(1,4);
Impp = zeros(1,4);
Vmpp = zeros(1,4);
FF = zeros(1,4);
ETA = zeros(1,4);

i = 2;
j = 1;

For Tc = tempVec
  P = simout_D1_Tvar(:,(i+4));

    I = simout_D1_Tvar(:,1);

    V = simout_D1_Tvar(:,1);

    [Izero,row] = min(abs(I(:)));
    Voc = V(row);
    VOC(1,j) = Voc;
    Isc = i(1);
    ISC(1,j) = Isc;
    [Pmax,roww]=max(P);
    Pmpp(1,j) = Pmax;

    Imax = I(roww);
    Impp(1,j) = Imax;

    Vmax = V(row);
    Vmpp(1,j) = Vmax;

    FFn = (Vmax*Imax)/(Voc*Isc);
    FF(1,j) = FFn;

    Pmppp_stc = 1000*Area;
    Eta = ((Voc*Isc*FFn)/Pmpp_stc)*100;
    ETA(1,j) = Eta;
    i=i+1;
    j=j+1;

   P_array = simout_D1_Tvar(:,6,9);
   I_array = simout_D1_Tvar(:,2,5);
   V_array = simout_D1_Tvar(:,1);

   PY = max(P_array);
   IY = max(I_array);
   PYmax = max(PY)*1.1;
   IYmax = max(IY)*1.1;
   VXmax = max(VOC)*1.1;

   figure
   plot(V_array, P_array,'LineWidth',1);
   axis([0 VXmax 0 PYmax]);
   grid on;
   title(['Single Diode VP Plot (Gc=STC Tc=Variable)', Model]);
   xlabel('Output voltage, V');
   ylabel('Output power, W');
   legend( ...
       ['T = ',num2str(tempVec(1,1),'%0f'),'c;','Pmpp = ',numstr(Pmpp(1,1),'%.2f'),'W'], ...
       ['T = ',num2str(tempVec(1,2),'%0f'),'c;','Pmpp = ',numstr(Pmpp(1,2),'%.2f'),'W'], ...
       ['T = ',num2str(tempVec(1,3),'%0f'),'c;','Pmpp = ',numstr(Pmpp(1,3),'%.2f'),'W'], ...
       ['T = ',num2str(tempVec(1,4),'%0f'),'c;','Pmpp = ',numstr(Pmpp(1,4),'%.2f'),'W'], ...
       'Location','NorthWest');
   figure
   plot(V_array, I_array,'LineWidth',1);
   axis([0 VXmax 0 IYmax]);
   grid on;
   title(['Single Diode VI Plot (Gc=STC Tc=Variable)'; Model]);
   xlabel('Output voltage, V');
   ylabel('Output Current, A');
   legend( ...
       ['Tc = ',num2str(tempVec(1,1),'%0f'),'c;','Isc = ',num2str(Isc(1),'%.2f'),'A',' Voc = ',num2str(VOC(1),'%.2f'),'V;'], ...
       ['Tc = ',num2str(tempVec(1,2),'%0f'),'c;','Isc = ',num2str(Isc(2),'%.2f'),'A',' Voc = ',num2str(VOC(2),'%.2f'),'V;'], ...
       ['Tc = ',num2str(tempVec(1,3),'%0f'),'c;','Isc = ',num2str(Isc(3),'%.2f'),'A',' Voc = ',num2str(VOC(3),'%.2f'),'V;'], ...
       ['Tc = ',num2str(tempVec(1,4),'%0f'),'c;','Isc = ',num2str(Isc(4),'%.2f'),'A',' Voc = ',num2str(VOC(4),'%.2f'),'V;'], ...
       'Location','NorthWest');
   figure
   EtaYmax = max(Eta)*1.1;
   TXmax = max(tempVec)+10;
   TXmin = min(tempVec)-10;
   stem(tempVec(1),ETA(1),'LineWidth',1); hold on
   stem(tempVec(2),ETA(2),'LineWidth',1); hold on
   stem(tempVec(3),ETA(3),'LineWidth',1); hold on
   stem(tempVec(4),ETA(4),'LineWidth',1); hold on
   axis([TXmin TXmax 0 EtaYmax])
   grid on
   title(['Single Diode Efficiency (Gc=STC Tc=Variable)';Model]);
   xlabel('Temperature(Tc)');
   ylabel('Efficiency (Eta)')
   legend( ...
       ['Eta = ',num2str(ETA(1),'%.2f'),' %',' %Tc = ',num2str(tempVec(1,1),'%.0f'),'C'], ...
       ['Eta = ',num2str(ETA(2),'%.2f'),' %',' %Tc = ',num2str(tempVec(1,2),'%.0f'),'C'], ...
       ['Eta = ',num2str(ETA(3),'%.2f'),' %',' %Tc = ',num2str(tempVec(1,3),'%.0f'),'C'], ...
       ['Eta = ',num2str(ETA(4),'%.2f'),' %',' %Tc = ',num2str(tempVec(1,4),'%.0f'),'C'], ...
       'Location','NorthEast');
   Results1 = ...
   [Changing_Parameter;tempVec(1,1);tempVec(1,2);TempVec(1,3);tempVec(1,4);];
   Results2 = [Pmpp(1,1);Pmpp(1,2);Pmpp(1,3);Pmpp(1,4);];
   Results3 = [ETA(1);ETA(2);ETA(3);ETA(4);];
   Results4 = [FF(1,1);FF(1,2);FF(1,3);FF(1,4);];
   Results5 = [Vmpp(1,1);Vmpp(1,2);Vmpp(1,3);Vmpp(1,4);];
   Results6 = [Impp(1,1);Impp(1,2);Impp(1,3);Impp(1,4);];
   Results7 = [ISC(1,1);ISC(1,2);ISC(1,3);ISC(1,4);];
   Results8 = [VOC(1,1);VOC(1,2);VOC(1,3);VOC(1,4);];

   xlswrite(Sim_Results,Results1,'Tvar','E3');
   xlswrite(Sim_Results,Results2,'Tvar','F4');
   xlswrite(Sim_Results,Results3,'Tvar','G4');
   xlswrite(Sim_Results,Results4,'Tvar','H4');
   xlswrite(Sim_Results,Results5,'Tvar','I4');
   xlswrite(Sim_Results,Results6,'Tvar','J3');
   xlswrite(Sim_Results,Results7,'Tvar','K4');
   xlswrite(Sim_Results,Results8,'Tvar','L4');

   %           End of code 

   when i run this program. error comes like '"
>> script4
Error using vertcat
Dimensions of matrices being concatenated are not consistent.

Error in script4 (line 4) [Model;Area;Pmpp_stc;Voc_stc;Isc_stc;Impp_stc;Vmpp_stc;' ';Ns;Ki;Kv;Tc;Gc;' ';...

Answer 1

[Rik]

If you want to write something to 1 cell in an Excel file, you probably mean to concatenate to a row instead of column-wise.

DataSheet_Values=...
    [Model,Area,Pmpp_stc,Voc_stc,Isc_stc,Impp_stc,Vmpp_stc,' ',Ns,Ki,Kv,Tc,Gc,' ',...
    a,a1,a2,Pe,' ',D1Rs,D1Rp,D2Rs,D2Rp,Eg];

[Rik]

Sent by email:

sir but now how i can change the code. can you send modified code plz

You don't use the variable elsewhere in your code, so this is enough modification to solve this error. You didn't explain what you want to do, or what anything means. If you wrote this code yourself you should understand what it does, if not, contact the person from whom you got it.

A last note: sending an e-mail is generally less effective than posting a comment, as anybody can reply to a comment, but only I can reply to my e-mail.

Answer 2

[Jan]

I guess, that you want a cell array instead (curly braces):

DataSheet_Values = {Model, Area, Pmpp_stc, Voc_stc, Isc_stc, ...
     Impp_stc, Vmpp_stc, ' ', Ns, Ki, Kv, Tc, Gc, ' ', ...
     a, a1, a2, Pe, ' ', D1Rs, D1Rp, D2Rs, D2Rp, Eg};

The error is caused by the concatenation of strings of different lengths:

C = ['123'; '45']

This cannot work, because a matrix must be rectangular - all rows must have the same length. To store objects of different type or size, use a cell array.