I want to use last value of p2 so using p2(14) but its showing error

ps=1.01325*10^5;

ds=1.225;

ts=288.16;

a1= -6.5;

c= -(9810/287)/a1;

b= 1:11;

for t=1:length(b)

t1= ts+ a1*(t);

p= ps*(t1/ts).^c;

d= ds*(t1/ts).^(c-1);

disp(p);

disp(d);

disp(t1);

end

qa= -(9810/(287))/t1 ;

e= 12:25;

j= 11;

for h= 11:length(e)

p2=p*exp(qa*(e-j));

d2=d*exp(qa*(e-j));

disp(p2);

disp(d2);

end

a2= 3;

c2= -(9810/287)/a2;

b1= 25:47;

d1=25;

for ta=1:length(b1)

t2= t1+ a2*(b1-d1);

p3= p2(14)*(t2/t1).^c2;

d3= d2*(t2/t1).^(c2-1);

disp(p3);

disp(d3);

disp(t2);

end

in the last loop I want to use last value of p2 so I am using p2(14) but its not happening and its showing error. How can I fix it??

Answer 1

[Eva-Maria Weiss]

Hi nitin pal,

p2(14) works fine in your code;

When I run your code it's going till

d3= d2*(t2/t1).^(c2-1);

right? So the error message 'Innermatrix dimension must agree' apears sincs (t2/t1) results in an 1x23 vector, while d2 has a length of 14;

Maybe you could check that.