Plotting values by defining a function plotter

Getting error in a function named plotter.

ERROR:

plotter( 1,8,1 )

Index in position 1 exceeds array bounds. Index must not exceed 1.

Error in plotter (line 18)

u(j)=-Interval(4,i);

CODE:

function plotter( Interval,k,b )

%plots the various values of solutions u1(t) and u2(t) versus time

arrsize=18000;

x=zeros(1,arrsize-1);

x1=zeros(1,arrsize-1);

u=zeros(1,arrsize-1);

%%creating x as linear x-axis

for i=1:arrsize-1

x(i)=i*b/arrsize;

end

for j=1:arrsize-1

for i=1:k

if((x(j)>=(((i-1)*b/k)))&&(x(j)<((i)*b/k)))

x1(j)=Interval(1,i);

u(j)=-Interval(4,i);

%%%%%%%%%%%%%%%%%%%%%%%%

%% because u(t)=-p2(t) %%

%%%%%%%%%%%%%%%%%%%%%%%

end

end

end

figure(1);

plot(x,max(x1,0),'DisplayName','x1 (first state variable)'); hold on;

plot(x,max(u,0),'DisplayName','u (control variable)');

axis([0 b 0 6.2]); % This give the range on x-axis and y-axis in the graph

legend('show');

set(gca,'FontSize',12);

end

Answer 1

[KSSV]

Your inputs to the function are not correct. The function:

plotter( Interval,k,b )

Interval should be an array/ vector.

Example:

Interval = rand(1,8) ; % should be an vector
k = 1;
b = 1; 
plotter( Interval,k,b )

[Kunal Jain]

@KSSV

Thanks for answering

I got it that Interval should be an array/vector.