Joysticks

[Alan Anderson]

Originally Posted by billbo911

I've often wondered how I could linearize a range of values to another range of values, such as 137-235 linearized to 137-254...So the question is, what code would you use to linearly map one range to another?

Use the equation for a line, y = mx + b.
Take the input value x, multiply it by a factor m, and add an offset b to yield the output value y. The factor can be a floating point value, or to save time you can multiply by an integer and divide by another integer.
To determine the m and b constants, use algebra to solve the pair of equations for the known input and output values.

[billbo911]

Originally Posted by Alan Anderson

Use the equation for a line, y = mx + b.
Take the input value x, multiply it by a factor m, and add an offset b to yield the output value y. The factor can be a floating point value, or to save time you can multiply by an integer and divide by another integer.
To determine the m and b constants, use algebra to solve the pair of equations for the known input and output values.

Thank You Alan

I knew it would be a relatively simple solution.
My years removed from Algebra are many, too many in fact, so some portions of my memory need a little refresh. This will help tremendously.