Defining inputs for subfunctions

Hey,

I'm writing some code that involves using set inputs (that I want to be able to change easily) in multiple subfunctions.

Take the following example;

    function [ output_args ] = Untitled2( input_args )
  clc;

x=0:0.01:5;
plot(f(x),x,g(x),x)
end

function [f_value]=f(x)
speed=6;
f_value=0.5.*speed.*x;
end

function [g_value]=g(x)
speed=6;
g_value=(x.^2)./speed;
end

How would I go about being able to define speed only once and it being 'called up' by any and every subfunction that uses it? I tried looking into nesting but got utterly confused :/ Is there a simple way to do this?

Answer 1

[Walter Roberson]

function [ output_args ] = Untitled2( input_args )

    speed = 6;

    function [f_value]=f(x)
      f_value=0.5.*speed.*x;
    end

    function [g_value]=g(x)
      g_value=(x.^2)./speed;
    end

    x=0:0.01:5;
    plot(f(x),x,g(x),x)
  end

[Stephen]

Oooh, so I basicly just have my subfunctions contained within another function that defines those values?

Thanks for the help :D

[Walter Roberson]

Yes. But it is important that the variable to be shared be defined before you define the nested functions that use the variable.

[Stephen]

Haha, yeah I'd literally just found that. Was trying to impliment it in my own code and was getting very confused why it wouldn't run as I couldn't see anything wrong with it. Then I had a brainwave and moved my variable to the start of my code and it worked a treat :)

Thank you very much for the help :)