Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.

6 Jul 2020
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Answer Accepted
Updated 7 Jul 2020
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[bestpar, resnorm, residual, exitflag, output, lmd, jacobian] == lsqnonlin (@ fz_costo_sana.m, startpar [0.01 0.01; .01] [10 10 10] options) ';

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Thandava Moorthy
Thandava Moorthy on 7 Jul 2020
Undefined function 'fz_costo_new.m' for input arguments of type 'double'.
please tell me how to clear this error
Walter Roberson
Walter Roberson on 7 Jul 2020
To fix that problem, what you need to do is create a new folder named
mkdir('+fz_costo_new')
movefile( 'fz_costo_new.m', '+fz_costo_new/m.m')
Now your function will be named 'm' inside the package that is named fz_costo_new and MATLAB will be able to resolve the function when you use @fz_costo_new.m
I do not recommend that. I recommend that you instead fix your source code so that instead of
@fz_costo_new.m
that you use
@fz_costo_new
but as I have recommended that to you three times before and you are not willing to do that, then the above mkdir() / movefile() will reconfigure so that you can continue to use @fz_costo_new.m

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 Accepted Answer

Thandava Moorthy
Thandava Moorthy on 6 Jul 2020
Edited: Walter Roberson on 6 Jul 2020

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clear
clear global
clc
close all
%format long
global SRex Km Ke V IL6b RaIL6 Tv t_start t_end dataIL6GLP1 t
% -------------------------------------------------------------------------
% NB: GLYCEMIA has to be expressed in (mmol/l
% INSULINEMIA has to be expressed in (mU/l)
% -------------------------------------------------------------------------
% -------------------------------------------------------------------------
% OGTT MUSCELLI DATA NORMO
% E. Muscelli, A. Mari, A. Natali, B.D. Astiarraga, S. Camastra, S. Frascerra, J.J. Holst, E. Ferrannini, Impact of incretin hormones on ?-cell function in subjects with normal or impaired glucose tolerance, Am. J. Physiol. Endocrinol. Metab. 291 (2006) E1144-E1150.
t_start=1;
%%
%
% for x = 1:10
% disp(x)
% end
%
t=[0 10 20 30 40 60 90 120 150 180];
dataGLP1out=[-0.0611404034260573;0.153761026536856;0.381887441294696;0.577225771343123;0.785935420734692;1.02732340392451;1.28878665794757;1.46511064263731;1.60857337534354;1.75203610804977;1.79782967573179;1.72437887843715;1.63132839759097;1.49215509632929;1.40577198333615;1.31946203761713;1.21963443800674;1.14002844377781;1.05353557987351;0.927440928858545;0.867507785455261;0.788267627596867]';
dataIL6out=[-0.0611404034260573;0.153761026536856;0.381887441294696;0.577225771343123;0.785935420734692;1.02732340392451;1.28878665794757;1.46511064263731;1.60857337534354;1.75203610804977;1.79782967573179;1.72437887843715;1.63132839759097;1.49215509632929;1.40577198333615;1.31946203761713;1.21963443800674;1.14002844377781;1.05353557987351;0.927440928858545;0.867507785455261;0.788267627596867]'*(1/6); %conversion from pmol/l to mU/l
% GIP+GLP1
% incretinaOGTT=[145.716 270.0798 339.5178 329.7588 322.815 318.4284 272.0028 280.0878 284.4702 254.0166]';
SRex = 0.050;
Km= 0.009;
Ke = 0.059;
V = 14;
IL6b =1.7;
RaIL6 = Ke*IL6b*V;
Tv =67;
%t_start= 1;
t_end = 155;
%RaINCb = 217;
%K1= 1;
%K2=0.1;
%t_end=180;
% ----------------------------------------------------------------
%OGTT NAUCK DATA HEALTHY
% M.A. Nauck, A. El-Ouaghlidi, B. Gabrys, K. Hücking, J.J Holst, C.F Deacon, B. Gallwitz, W.E. Schmidt, J.J. Meier, Secretion of incretin hormones (GIP and GLP-1) and incretin effect after oral glucose in first-degree relatives of patients with type 2 diabetes, Regul Pept. 122 (2004) 209-217.
% t=[0 15 30 45 60 75 90 120 150 180 210 240]';
% glicemiaOGTT=[5.54 8.04 11 11.54 10.64 8.73 7.27 5.73 5.14 4.64 4.63 4.68]';
%insulinemiaOGTT=[45.45 193.9 478.78 654.5 706.06 472.73 318.18 169.7 109.1 60.61 36.36 26.67]'*(1/6); %conversion from pmol/l to mU/l
%GIP+GLP1
%incretinaOGTT=[92.2602 298.347 418.8954 423.4032 431.433 402.3756 370.2276 289.7586 221.4258 178.7952 142.5594 104.3616]';
%Gb = 5.5;
%Ib = 7.6;
%Incb=90;
% k7 ESTIMATED FROM IIVG
%k7=0.158;
%tfinal=240;
% -------------------------------------------------------------------------
% -------------------------------------------------------------------------
dataIL6GLP1 = [dataGLP1out dataIL6out];
%FIXED PARAMETERS SIMULATOR
%D = 417; %quantity in mmol equivalent to 75g
%kabs=0.22;
%f=0.90;
% HGB_b=0.76875; % hepatic balance
V=14;
%M_ipog=0.03;
%alfa=1.0;
%p=2;
% K1=(p/(p+1))*HGB_b/((G_b)*V);
% K2=(1/(p+1))*HGB_b/(I_b*V);
%K3=0.0718; % different from zero only when G>10
%K4=0.717; % different from zero only when G>10
%K6=0.1;
%K9=0.1;
%Ra_INC_b=K6*INC_b*V;
%K5 = 6.91;
% ------------------------------------
% initial values for the parameters to be estimated
%K_0=0.013;
K1_0 = 1;
K2_0 = 0.1;
RaINCb_0=217;
% BETA_0=1;
% K5_0 = 25;
startpar = [K1_0 K2_0 RaINCb_0];
% -------------------------------------
options=optimset('Display','Iter','TolFun',1E-20,'TolX',1E-7,'MaxFunEvals',3000,'MaxIter',500)';
[bestpar, resnorm, residual, exitflag, output, lmd, jacobian]=lsqnonlin(@fz_costo_sana.m,startpar[0.01 0.01 .01] [10 10 10]options)'; nnnnnnnnnnnnnn
%bestpar, resnorm, residual, exitflag, output, lmd, jacobian
%K_0=bestpar(1);
K1_0=bestpar(1);
K2_0=bestpar(2);
RaINCb_0=bestpar(3);
% BETA_0=bestpar(4);
% K5_0=bestpar(5);
% beta=-K7*(G_b^1.3)-K8*INC_b+K9*I_b;
% kgri=Kmax;
% E error covariance matrix
[m,n]=size(residual);
E=inv(jacobian'*jacobian);
% -------------------------------------
% standard deviation of the parameters
%std_K=sqrt(E(1,1));
std_K1=sqrt(E(1,1));
std_K2=sqrt(E(2,2));
std_RaINCb=sqrt(E(3,3));
% std_BETA=sqrt(E(4,4));
% std_K5=sqrt(E(5,5));
% -------------------------------------
% percent coefficient of variation of the estimated parameters
%CV_K=(std_K/K)*100
CV_K1=(std_Gama/Gama)*100;
CV_K2=(std_K8/K8)*100;
CV_RaINCb=(std_M/M)*100;
% CV_BETA=(std_BETA/BETA)*100
% CV_K5=(std_K5/K5)*100
% -------------------------------------
figure(1)
sim('MCBS_project_than',t) % replace 'Nuovo_OGTT_Ela' with the name of your Simulink model
plot(t,GLP1_data_VICT,'ro')
xlabel('time (min)')
ylabel('GLP1 (mmol/L)')
hold on
plot(tout,GLP1out,'k')
figure(2)
plot(t,IL6_data_VICT,'ro')
xlabel('time (min)')
ylabel('insulin (mU/L)')
hold on
plot(tout,IL6mout,'k')
% figure(3)
% plot(t,incretinaOGTT,'ro')
% xlabel('time (min)')
% ylabel('incretin (ng/L)')
% hold on
% plot(tout,INCout,'k')
RMSEogtt=sqrt(resnorm/(3*(length(GLP1_data_VICT))));
Error: File: parameterestim_sana.m Line: 109 Column: 98
Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for
mismatched delimiters.

15 Comments
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Walter Roberson
Walter Roberson on 6 Jul 2020
That line has
[bestpar, resnorm, residual, exitflag, output, lmd, jacobian]=lsqnonlin(@fz_costo_sana.m,startpar[0.01 0.01 .01] [10 10 10]options)';
You should never use the .m after a @function . When @ is followed by a name, it is referring to a function and the function is not necessarily implemented by a .m file. Name resolution will be done to find the function.
Using .m would only be done if you were using run() and a character vector or string scalar that was the name of a script.
You also have
startpar[0.01 0.01 .01]
which is invalid. [] is used only to build lists, never to indicate a function call and never to indicate indexing. Perhaps you want a comma between startpar and the list.
That section of your code says
startpar[0.01 0.01 .01] [10 10 10]options
You can only have a [] list directly after another [] list if you are inside a [] list, or if you are inside {} building a cell array. You also cannot have an expression such as options directly after a [] list without an operator between them. MATLAB has no implied multiplication, so if you are wanting to multiply [10 10 10] by options you need to put in the * or .* explicitly.
Thandava Moorthy
Thandava Moorthy on 6 Jul 2020
Hi walter roberson, i'm not able find where you corrected my error can u please tell me.
Thandava Moorthy
Thandava Moorthy on 6 Jul 2020
sir can you please help me by editing my program and share here so i can try it in my system.
Walter Roberson
Walter Roberson on 6 Jul 2020
[bestpar, resnorm, residual, exitflag, output, lmd, jacobian] = lsqnonlin(@fz_costo_sana, startpar, [0.01 0.01 .01], [10 10 10], options);
Thandava Moorthy
Thandava Moorthy on 6 Jul 2020
Unrecognized function or variable 'option'.
Error in fz_costo (line 109)
[bestpar, resnorm, residual, exitflag, output, lmd, jacobian] = lsqnonlin(@fz_costo_sana, startpar, [0 0
0], [5 5 5], option);
109 [bestpar, resnorm, residual, exitflag, output, lmd, jacobian] = lsqnonlin(@fz_costo_sana, startpar, [0 0 0], [5 5 5], option);
K>>
Walter Roberson
Walter Roberson on 6 Jul 2020
the variable name is options with an s, like I posted before.
Thandava Moorthy
Thandava Moorthy on 6 Jul 2020
Undefined function 'fz_costo_new.m' for input arguments of type 'double'.
Error in lsqnonlin (line 206)
initVals.F = feval(funfcn{3},xCurrent,varargin{:});
Error in parameterestim_sana (line 108)
[bestpar, resnorm, residual, exitflag, output, lmd, jacobian] = lsqnonlin(@fz_costo_new.m, startpar, [0 0
0], [5 5 5], options);
Caused by:
Failure in initial objective function evaluation. LSQNONLIN cannot continue.
211 rethrow(userFcn_ME)
K>>
Thandava Moorthy
Thandava Moorthy on 6 Jul 2020
Edited: Stephen23 on 6 Jul 2020
File text clearly marked
Copyright 1990-2019 The MathWorks, Inc.
removed from this comment.
Thandava Moorthy
Thandava Moorthy on 6 Jul 2020
Edited: Walter Roberson on 6 Jul 2020
clear
clear global
clc
close all
%format long
global SRex Km Ke V IL6b RaIL6 Tv t_start t_end dataIL6GLP1 t
% -------------------------------------------------------------------------
% NB: GLYCEMIA has to be expressed in (mmol/l
% INSULINEMIA has to be expressed in (mU/l)
% -------------------------------------------------------------------------
scelta=menu('Select case','HC1 (Muscelli)','HC2 (Nauck)');
switch scelta
case 1
% -------------------------------------------------------------------------
% OGTT MUSCELLI DATA NORMO
% E. Muscelli, A. Mari, A. Natali, B.D. Astiarraga, S. Camastra, S. Frascerra, J.J. Holst, E. Ferrannini, Impact of incretin hormones on ?-cell function in subjects with normal or impaired glucose tolerance, Am. J. Physiol. Endocrinol. Metab. 291 (2006) E1144-E1150.
t_start=1;
t=[0 10 20 30 40 60 90 120 150 180];
dataGLP1out=[-0.0611404034260573;0.153761026536856;0.381887441294696;0.577225771343123;0.785935420734692;1.02732340392451;1.28878665794757;1.46511064263731;1.60857337534354;1.75203610804977;1.79782967573179;1.72437887843715;1.63132839759097;1.49215509632929;1.40577198333615;1.31946203761713;1.21963443800674;1.14002844377781;1.05353557987351;0.927440928858545;0.867507785455261;0.788267627596867]';
dataIL6out=[-0.0611404034260573;0.153761026536856;0.381887441294696;0.577225771343123;0.785935420734692;1.02732340392451;1.28878665794757;1.46511064263731;1.60857337534354;1.75203610804977;1.79782967573179;1.72437887843715;1.63132839759097;1.49215509632929;1.40577198333615;1.31946203761713;1.21963443800674;1.14002844377781;1.05353557987351;0.927440928858545;0.867507785455261;0.788267627596867]'*(1/6); %conversion from pmol/l to mU/l
% GIP+GLP1
% incretinaOGTT=[145.716 270.0798 339.5178 329.7588 322.815 318.4284 272.0028 280.0878 284.4702 254.0166]';
SRex = 0.050;
Km= 0.009;
Ke = 0.059;
V = 14;
IL6b =1.7;
RaIL6 = Ke*IL6b*V;
Tv =67;
%t_start= 1;
t_end = 155;
%RaINCb = 217;
%K1= 1;
%K2=0.1;
%t_end=180;
% ----------------------------------------------------------------
case 2
%OGTT NAUCK DATA HEALTHY
% M.A. Nauck, A. El-Ouaghlidi, B. Gabrys, K. Hücking, J.J Holst, C.F Deacon, B. Gallwitz, W.E. Schmidt, J.J. Meier, Secretion of incretin hormones (GIP and GLP-1) and incretin effect after oral glucose in first-degree relatives of patients with type 2 diabetes, Regul Pept. 122 (2004) 209-217.
% t=[0 15 30 45 60 75 90 120 150 180 210 240]';
% glicemiaOGTT=[5.54 8.04 11 11.54 10.64 8.73 7.27 5.73 5.14 4.64 4.63 4.68]';
%insulinemiaOGTT=[45.45 193.9 478.78 654.5 706.06 472.73 318.18 169.7 109.1 60.61 36.36 26.67]'*(1/6); %conversion from pmol/l to mU/l
%GIP+GLP1
%incretinaOGTT=[92.2602 298.347 418.8954 423.4032 431.433 402.3756 370.2276 289.7586 221.4258 178.7952 142.5594 104.3616]';
%Gb = 5.5;
%Ib = 7.6;
%Incb=90;
% k7 ESTIMATED FROM IIVG
%k7=0.158;
%tfinal=240;
% -------------------------------------------------------------------------
end
% -------------------------------------------------------------------------
dataIL6GLP1 = [dataGLP1out dataIL6out];
%FIXED PARAMETERS SIMULATOR
%D = 417; %quantity in mmol equivalent to 75g
%kabs=0.22;
%f=0.90;
% HGB_b=0.76875; % hepatic balance
V=14;
%M_ipog=0.03;
%alfa=1.0;
%p=2;
% K1=(p/(p+1))*HGB_b/((G_b)*V);
% K2=(1/(p+1))*HGB_b/(I_b*V);
%K3=0.0718; % different from zero only when G>10
%K4=0.717; % different from zero only when G>10
%K6=0.1;
%K9=0.1;
%Ra_INC_b=K6*INC_b*V;
%K5 = 6.91;
% ------------------------------------
% initial values for the parameters to be estimated
%K_0=0.013;
K1_0 = 1;
K2_0 = 0.1;
RaINCb_0=217;
% BETA_0=1;
% K5_0 = 25;
startpar = [K1_0 K2_0 RaINCb_0];
% -------------------------------------
options=optimset('Display','Iter','TolFun',1E-20,'TolX',1E-7,'MaxFunEvals',3000,'MaxIter',500)';
[bestpar, resnorm, residual, exitflag, output, lmd, jacobian] = lsqnonlin(@fz_costo_new.m, startpar, [0 0 0], [5 5 5], options);
%bestpar, resnorm, residual, exitflag, output, lmd, jacobian
%K_0=bestpar(1);
K1_0=bestpar(1);
K2_0=bestpar(2);
RaINCb_0=bestpar(3);
% BETA_0=bestpar(4);
% K5_0=bestpar(5);
% beta=-K7*(G_b^1.3)-K8*INC_b+K9*I_b;
% kgri=Kmax;
% E error covariance matrix
[m,n]=size(residual);
E=inv(jacobian'*jacobian);
% -------------------------------------
% standard deviation of the parameters
%std_K=sqrt(E(1,1));
std_K1=sqrt(E(1,1));
std_K2=sqrt(E(2,2));
std_RaINCb=sqrt(E(3,3));
% std_BETA=sqrt(E(4,4));
% std_K5=sqrt(E(5,5));
% -------------------------------------
% percent coefficient of variation of the estimated parameters
%CV_K=(std_K/K)*100
CV_K1=(std_Gama/Gama)*100;
CV_K2=(std_K8/K8)*100;
CV_RaINCb=(std_M/M)*100;
% CV_BETA=(std_BETA/BETA)*100
% CV_K5=(std_K5/K5)*100
% -------------------------------------
figure(1)
sim('MCBS_project_than',t) % replace 'Nuovo_OGTT_Ela' with the name of your Simulink model
plot(t,GLP1_data_VICT,'ro')
xlabel('time (min)')
ylabel('GLP1 (mmol/L)')
hold on
plot(tout,GLP1out,'k')
figure(2)
plot(t,IL6_data_VICT,'ro')
xlabel('time (min)')
ylabel('insulin (mU/L)')
hold on
plot(tout,IL6mout,'k')
% figure(3)
% plot(t,incretinaOGTT,'ro')
% xlabel('time (min)')
% ylabel('incretin (ng/L)')
% hold on
% plot(tout,INCout,'k')
RMSEogtt=sqrt(resnorm/(3*(length(GLP1_data_VICT))));
Thandava Moorthy
Thandava Moorthy on 6 Jul 2020
Error in lsqnonlin (line 206)
initVals.F = feval(funfcn{3},xCurrent,varargin{:});
Walter Roberson
Walter Roberson on 6 Jul 2020
I already told you what the problem is, and I already told you the solution and gave an exact version of the code.
You have @fz_costo_new.m and you need to change that to @fz_costo_new
NEVER put the .m after a @ like that. You are not giving the name of a file at that point!

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More Answers (1)

Walter Roberson
Walter Roberson on 6 Jul 2020

0 votes

[bestpar, resnorm, residual, exitflag, output, lmd, jacobian] == lsqnonlin (@ fz_costo_sana, startpar [0.01 0.01; .01] [10 10 10] options) ';
no .m

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