Trajectory Calculator (W/ Drag)

[Ether]

Originally Posted by JesseGR

applied a few physics formulas to a Java application and made a calculator that can accurately determine the path of an object when fired at an angle and a velocity

How do you know it is accurate? i.e. what test data did you use to validate your model?

[SenorZ]

I can't seem to run this on my computer. Cannot find main class...?

Either way those curves don't look like there is any drag. Did you physically measure the air drag coefficient?

[Lalaland1125]

Our team started working on the same idea(manually integrate the drag + projectile formulas to calculate the projectile path)(http://ideone.com/aoChY, but we haven't quite gotten it to the level of completeness you did.


This is going to require a lot of testing to get the constants right though(and to see if it is accurate at all).

(Also, no offense, but I would heavily suggest for you to refactor your code. All of those functions with repeated code and the whole "god" class is going to make things hard to modify and debug later on)

[robokiller]

I really want to play with a couple of these programs but yours is not working on my computer
"could not find main class: Main program will exit"

[shuhao]

Originally Posted by Ether

How do you know it is accurate? i.e. what test data did you use to validate your model?

Check it against mine?

I also wrote something about 2 weeks back. This one is in GNU Octave/Matlab

https://github.com/FRCTeam4069/Simul...sketball_sim.m

[Ether]

Originally Posted by shuhao

Check it against mine? I also wrote something about 2 weeks back.

what test data did you use to validate your model?

[Joe Ross]

Originally Posted by shuhao

Check it against mine?

I also wrote something about 2 weeks back. This one is in GNU Octave/Matlab

Comparing a model to a model doesn't prove that either is correct. It only proves that they included similar factors, not that they included the correct factors (and factored them in correctly). The only way to validate a model is to compare it to actual test data.