Generating a legend for one function that is associated with two variables

I am putting together a script that plots projectile motion as a function of the initial velocity and the launch angle. I am trying to add a legend that denotes v0 and theta for the plot and updates with the variables assigned in the command window. When I run the script, I get the legend, but the string message associated with the variable is listed twice. Can anyone provide any suggestions? This is the code I have right now for labeling the plot:

% Plot title and legend
title('2D Projectile Motion')
variableconvert = sprintf('Velocity and theta: %3d', v0, theta);
legend(variableconvert)

[dpb]

You asked to output two variables but only gave one output field -- so the whole format string is repeated.

variableconvert = sprintf('Velocity %3d and theta: %3d', v0, theta);

would be one way to fix. Salt to suit...

NB: that the '%d' format will limit you to showing only integer values. If that's all you're using, that's fine; you might consider

variableconvert = sprintf('Velocity and theta: %.1f, %.1f', v0, theta);

as another possibility.

[Olivia Kline]

Thank you so much! That worked like a charm. I am not super familar with sprintf so the documentation was difficult to follow. Thanks for your help.

Answer 1

[Adam Danz]

The call to sprintf contains one format specification and two values. That applies the formatSpec twice.

demo:

sprintf('Demo %d ', 1,2)

ans = 'Demo 1 Demo 2 '

Either add another formatSpec or remove one of the values.

sprintf('Demo %d ', 1)

ans = 'Demo 1 '

sprintf('Demo %d %d', 1, 2)

ans = 'Demo 1 2'