MATLAB: Ode Not enough input arguments.

odeode systemode23

Hi all
i have this code 
clear all;
close all;
clc;
xstartconica=9.923425547086419e-04;
xfineconica=0.006023740592755;
Ralfa_end=0.030973382509232;
Rbeta_end=0.005317248451592;
alfa_end_rad=0.191986217719376;
beta_end_rad=0.645771823237902;
xc_end=0.004812528236661;
yc_end=0.007521773875673;
Lnozzle_end=0.029788357160958;
raggio_end=0.006347773875673;
Nn=10^-5;
f3_variation=4e-3:2e-4:5e-3;
f2_variation=1e-1:2e-2:5e-1;
f1_variation=1e-1:1e-2:5e-1;
Ptend_conv=[147245.424239257,147234.962409348,147224.499805318,147214.036426991,147203.572274194,147193.107346753,147182.641644491,147172.175167235,147161.707914810,147151.239887040,147140.771083752,147130.301504769,147119.831149918,147109.360019022,147098.888111906,147088.415428396,147077.941968316,147067.467731491,147056.992717745,147046.516926902,147036.040358788,147025.563013225,147015.084890040,147004.605989055,146994.126310095,146983.645852985,146973.164617547,146962.682603606,146952.199810987,146941.716239512,146931.231889005,146920.746759291,146910.260850192,146899.774161532,146889.286693136,146878.798444825,146868.309416424,146857.819607755,146847.329018643,146836.837648909,146826.345498378];
Mend_conv=[0.140750461243504,0.140760731075046,0.140771003185311,0.140781277575151,0.140791554245414,0.140801833196952,0.140812114430615,0.140822397947255,0.140832683747724,0.140842971832875,0.140853262203559,0.140863554860630,0.140873849804943,0.140884147037350,0.140894446558707,0.140904748369869,0.140915052471691,0.140925358865029,0.140935667550740,0.140945978529680,0.140956291802707,0.140966607370678,0.140976925234451,0.140987245394886,0.140997567852842,0.141007892609177,0.141018219664752,0.141028549020427,0.141038880677064,0.141049214635523,0.141059550896667,0.141069889461358,0.141080230330458,0.141090573504830,0.141100918985339,0.141111266772849,0.141121616868223,0.141131969272327,0.141142323986026,0.141152681010187,0.141163040345676];
     for m=1:41
        for  f_d=1:length(f2_variation)
Ynozzle02(m)={[Ptend_conv(m),Mend_conv(m)]};
Dall_nozzle2 ={[xstartconica:Nn:xfineconica]}; 
f2_cell(f_d)={f2_variation(f_d)};
      end
   end
opt=odeset('NormControl','Refine','Stats','MaxStep');
 for iDom_nozzle2 = 1:numel(Dall_nozzle2)
    xRangenozzle2 = Dall_nozzle2{iDom_nozzle2};
for iInitial_nozzle2 = 1:numel(Ynozzle02)
       for fF_2=1:numel(f2_cell)
             f2= f2_cell{fF_2};
[xSolnozzle2{iDom_nozzle2,iInitial_nozzle2,fF_2},YSolnozzle2{iDom_nozzle2,iInitial_nozzle2,fF_2}]=ode23(@(x,Ynozzle)nozzlesinglebobbgola(x,Ynozzle, ...
        xstartconica,xfineconica,Ralfa_end,Rbeta_end,alfa_end_rad,beta_end_rad,xc_end,yc_end,Lnozzle_end,raggio_end,f2),xRangenozzle2,Ynozzle02{iInitial_nozzle2},...
        opt);
    
end       
end
 end
related to this function 
function dYnozzledx=nozzlesinglebobbgola(x,Ynozzle,xstartconica,xfineconica,Ralfa_end,Rbeta_end,alfa_end_rad,beta_end_rad,xc_end,yc_end,Lnozzle_end,raggio_end,f3,f2,f1)
gamma=1.667;
Pt_nozzle=Ynozzle(1);
M_nozzle=Ynozzle(2);
Anozzle= pi*(yc_end-sqrt(raggio_end^2-(x-xc_end)^2))^2;
Perimetro= 2*pi*(yc_end-sqrt(raggio_end^2-(x-xc_end)^2));
dA_nozzledx=(2*pi*(x-xc_end)/(sqrt(raggio_end^2-(x-xc_end)^2)))*(yc_end-sqrt(raggio_end^2-(x-xc_end)^2));
dPt_nozzledx=-Pt_nozzle*((gamma*(M_nozzle^2))/2)*f2*(Perimetro/Anozzle);
dM_nozzledx=M_nozzle*((-(1+((gamma-1)/2)*M_nozzle^2)/(1-M_nozzle^2))*(dA_nozzledx/Anozzle)+...
    ((1+((gamma-1)/2)*M_nozzle^2)/(1-M_nozzle^2))*(gamma*(M_nozzle^2)*f2*Perimetro/(2*Anozzle)));
dYnozzledx=[dPt_nozzledx;dM_nozzledx];
end
i don't know why i obtain the error:Not enough input arguments…Any help?
Thank you very much
Regards

Best Answer

As the error states, you are not calling the function nozzlesinglebobbgola with enough input arguments:
nozzlesinglebobbgola(x, Ynozzle, xstartconica,xfineconica,Ralfa_end,Rbeta_end,alfa_end_rad,beta_end_rad,xc_end,yc_end,Lnozzle_end,raggio_end,f2)       % how you call it

nozzlesinglebobbgola(x, Ynozzle, xstartconica,xfineconica,Ralfa_end,Rbeta_end,alfa_end_rad,beta_end_rad,xc_end,yc_end,Lnozzle_end,raggio_end,f3,f2,f1) % how you defined it

Or with the intermediate variables removed for clarity:
nozzlesinglebobbgola(x, Ynozzle, .. ,raggio_end,f2)       % how you call it
nozzlesinglebobbgola(x, Ynozzle, .. ,raggio_end,f3,f2,f1) % how you defined it
Using so many positional input arguments is buggy (e.g. like this question) and makes the code very difficult to understand. Avoid doing this. I strongly recommend that you do either of these:
  1. put all of those parameters into one scalar structure and pass that.
  2. use a nested function, then you don't need those input arguments at all (nor the anonymous function).
https://www.mathworks.com/help/matlab/math/parameterizing-functions.html
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