How can I use for loop to input values when solving ODEs using ode45?

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Dursman Mchabe
Dursman Mchabe 2019년 2월 13일
댓글: Dursman Mchabe 2020년 12월 26일
Hi everyone
On the attached code, I am trying to use a for loop to iteratively input values while solving ODEs using ode45. I think I am making a mistake somewhere. I get the error message:
Not enough input arguments.
Error in SlurryCaseODE45Feb14/kinetics (line 31)
[T,Cv]=ode45(@DifEq,t,c0,Options);
Error in lsqcurvefit (line 213)
initVals.F = feval(funfcn_x_xdata{3},xCurrent,XDATA,varargin{:});
Error in SlurryCaseODE45Feb14 (line 166)
[theta,Rsdnrm,Rsd,ExFlg,OptmInfo,Lmda,Jmat]=lsqcurvefit(@kinetics,theta0,t,c);
Caused by:
Failure in initial objective function evaluation. LSQCURVEFIT cannot continue.
Please help.

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aara
aara 2019년 2월 13일
You have to define the initial and final time for the ode45 function rather than just typing t, use [t0 tf].
I suggest editting the function function dC=DifEq(t,c) as it has some missing matrix multiplication operators (.*) and revising the matrix formations that you used. Check line 39 for example.
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ABHISEK PATI
ABHISEK PATI 2020년 12월 24일
please share your solution i am also stuck at same

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