How do I fix Invalid first data argument ?

Here's my code. Matlab said there's an error using plot. Please help!

 plot ('TBC,theta')
hold on
plot ('TAB, theta')
hold off
grid on
table('TAB & TBC versus theta')
xlabel('theta/ radians');
ylabel ('TAB &TBC /lb');

Answer 1

[Les Beckham]

The plot() function requires variables as arguments, not a character vector (which is what you have created by putting single quotes around the arguments). Assuming that TBC, TAB, and theta are existing variables in your workspace with consistent dimensions, the plot() commands should work if you take off the single quotes. Also, I think you might mean title() instead of table() on line 6.

[Daniel Oluwalana]

Thanks