I get an error when trying to plot

I do not get a line when I graph this. I am very new to coding and am struggling with the graphs.

clear 
q=38.89 ; %W/m^3 
r_o=0.04 ;
T_oo=5 ;
k=0.5 ;
c=10.1 ;

V=.1:1.0 ;
   
Temp(V)=q/(6*k)*(r_o^2)+(q*r_o)/(3*(c*V^0.425))+T_oo ;

Array indices must be positive integers or logical values.

Temp(Temp==0)=[];
figure
plot(.1:1,Temp)
xlabel('V *10^-1(m/s)')
xlim('auto')
ylim('auto')
ylabel('Temp (C)')
title('Temperature of center vs air velocity')

Answer 1

[Image Analyst]

Try making V a vector, and then using ./ and .^ because it's a vector:

clear 
q=38.89 ; %W/m^3 
r_o=0.04 ;
T_oo=5 ;
k=0.5 ;
c=10.1 ;

V = linspace(.1, 1.0, 500);

Temp = q/(6*k)*(r_o^2)+(q*r_o) ./ (3*(c*V.^0.425)) + T_oo

Temp = 1×500

5.1573 5.1563 5.1553 5.1543 5.1534 5.1524 5.1515 5.1506 5.1497 5.1489 5.1480 5.1472 5.1464 5.1456 5.1449 5.1441 5.1434 5.1427 5.1420 5.1413 5.1406 5.1399 5.1393 5.1386 5.1380 5.1374 5.1367 5.1361 5.1356 5.1350

Temp(Temp==0)=[];
figure
plot(V, Temp, 'b-')
grid on;
xlabel('V *10^-1(m/s)')
xlim('auto')
ylim('auto')
ylabel('Temp (C)')
title('Temperature of center vs air velocity')