Warning: Function figure has the same name as a MATLAB builtin.
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HI,I am new to Matlab and I am trying this code,but it is not working...can you help me please.
Warning: Function figure has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict.\
how can i do this? what do i need to change?
THIS CODE WAS TESTED IN MATLAB 2020a...
lambda = 1866;
delta1=0.309;
delta2=0.251;
rho=0.457 ;
alpha = 0.177;
mu = 194;
omega = 0.256 ;
eta1 = 0.341 ;
eta2= 3.78 ;
beta = 0.569;
c = 15.5 ;
mu0 = 0.087;
mu1 = 0.172;
%bmax = 1.8 ; % backward b if u r c at i o n
bmax =10.8;% forward b if u r c at i o n
rend=100000;
rlst=linspace(0,2,rend) ;
mylist1=zeros( 1, length (rlst));
mylist2=zeros( 1 , length ( rlst ));
mylist3=zeros(1,length (rlst));
Q1= mu + alpha + delta1 ;
Q2= delta2 + mu + omega ;
for i =1:1:rend
r=rlst(i) ;
% Ao, A1 , A2 , A3 are the c o e f f i c i e n t s of the polynomial obtained t the
% endemic equilibrium point E*
Ao = beta * c * (mu0 + Q1 ) * (mu0* ( delta2 * eta2 + eta1 * rho ) + Q2* ( delta1*eta2+rho ) ) ;
A1 = beta * c * ( delta2 * eta2 + eta1 * rho ) * (mu0* ( 2 *bmax*mu1 + bmax*Q1+lambda) + bmax*mu1*Q1) + Q2* ( beta * c * delta1 * eta2 * ( bmax* (mu0 + mu1)-lambda) + beta * c * rho * ( bmax*mu1- lambda ) + mu0* rho * ( beta *bmax* c + mu )+Q1* ( 2 * beta *bmax* c * delta1 * eta2 + rho * ( 2 * beta *bmax* c + mu) ) ) ;
A2= bmax* (Q2* ( beta * c * delta1 * eta2 * ( bmax*mu1-2*lambda )+rho * (mu1* ( beta *bmax* c + mu )-2* beta * c *lambda + mu*mu0) +Q1* ( beta *bmax* c * delta1 * eta2 + beta *bmax* c * rho + 2*mu * rho ) ) +beta * c * ( delta2 * eta2 + eta1 * rho ) * (mu1* ( bmax* (mu1 + Q1) + lambda ) +lambda*mu0));
A3= bmax^2*rho *Q2*mu* (Q1 + mu1)*(1-r ) ;
mypoly=[Ao, A1 , A2 ,A3 ] ;
sol=roots( mypoly ) ; % we plot the root s ( sol ) of the polynomial mypoly
mylist1(i)=sol(1);
mylist2( i )= sol( 2 ) ;
mylist3 ( i )= sol( 3 ) ;
% we r epl a c e negative root s by zero and only st o r e the r e a l p o s it i v e
% root s into myli st
if imag( mylist1 (i))~=0
mylist1(i)=0;
else
mylist1 ( i )=max( 0 , mylist1 ( i) ) ;
end
if imag( mylist2 ( i ))~=0
mylist2 ( i ) = 0 ;
else
mylist2 ( i )=max( 0 , mylist2 ( i ) ) ;
end
if imag( mylist3 ( i ))~=0
mylist3( i ) = 0 ;
else
mylist3(i)= max( 0 , mylist3 ( i ) ) ;
end
end
% we determine the number i from the r l i s t fo r each fun ction myli st
% where the root of the polynomial i s r e a l and p o s it i v e .
lstpos=find( mylist1 ~=0);
index1=min( lstpos ) ;
index2=max( lstpos ) ;
mlstpos=find ( mylist2 ~=0);
index3=min( mlstpos ) ;
index4=max( mlstpos ) ;
vlstpos=find ( mylist3 ~=0);
index5=min(vlstpos) ;
index6=max(vlstpos) ;
% we formulate the di s ea s e f r e e equilibrium l i n e s on the x−a xi s
s=linspace( 0 ,1,rend) ;
z=linspace (1,1.5, rend);
y1= + 0*s ;
y2= + 0*z ;
%a xi s ( [ 0 . 3 , 1 . 5 , 0 , 5 ] ) % backward b if u r c at i o n
axis ( [ 0.7 , 1.5 , 0, 4 ] ) % forward b if u r c at i o n
hold on
%we plot the p o s it i v e root s of the polynomial
%plot ( r l s t ( index1 : index2 ) , myli st1 ( index1 : index2 ) , ’ b−’ ,
%r l s t ( index3 : index4 ) , myli st2 ( index3 : index4 ) , ’ b−’ , r l s t ( index5 : index6 ) ,
%myli st3 ( index5 : index6 ) , ’ r −−’,’ linewidth ’ ,2)% bacward b if u r c at i o n
plot(rlst( index1 : index2 ), mylist1 ( index1 : index2 ) ,' b-',rlst( index3 : index4 ),mylist2( index3 : index4 ) ,' b-',rlst( index5 : index6 ) , mylist3 ( index5 : index6 ) , 'b−' , 'linewidth ' ,2)% forwar
plot ( s , y1 , 'b− ' , 'linewidth ' , 2 )
plot ( z , y2 , ' r −−',' linewidth' , 2 )
%x l im it ( [ 0 . 2 , 1 . 8 ] )
xlabel ( ' Reproduction number Rh ' )
ylabel ( 'Infected population s i z e I ( t ) ' )
hold off
2 Comments
Stijn Haenen
on 23 May 2020
You try to define a variable or function which has the same name as a standard function of matlab, you can use capital letters or _ when you define your variables or function to avoid this problem.
Cumpaniciu Alexandru
on 23 May 2020
Accepted Answer
Walter Roberson
on 23 May 2020
0 votes
You named your file figure.m which will cause problems. You should rename the file for your code.
9 Comments
Cumpaniciu Alexandru
on 23 May 2020
Steven Lord
on 23 May 2020
Remove the spaces in your line specification ('b-' instead of ' b-'.)
Cumpaniciu Alexandru
on 24 May 2020
You have multiple line specifications. You need to remove the space fom all of them:
' r −−'
^ ^ These must be removed!
Cumpaniciu Alexandru
on 24 May 2020
Cumpaniciu Alexandru
on 24 May 2020
Cumpaniciu Alexandru
on 24 May 2020
Cumpaniciu Alexandru
on 24 May 2020
Walter Roberson
on 24 May 2020
What is the exact name of the the file you are using for this code?
What shows up if you you try
which -all figure
More Answers (0)
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