How do I convert a script to a function?

4 次查看（过去 30 天）
Ashley Rains
Ashley Rains 2017-5-3
评论： Ashley Rains 2017-5-4
I am trying to convert the attached script into a function to produce the same figure and results for a plot of the (for argument's sake) Earth orbiting the Sun. I have attached what I have of the function so far, but I am struggling to understand what I have done wrong and how to proceed. The function has pseudocode explanations of variables etc. Any help would be much appreciated. Regards, AR
  4 个评论
显示 2更早的评论
Ashley Rains
Ashley Rains 2017-5-3
Thank you for your quick replies. I think I am not understanding the ways to reference into the matrices, and then pack them back into return values. The errors that return when attempting to execute that function are to do with the matrix dimensions and certain variables being undefined/not existing. Apologies, but I do not have access to Matlab until tomorrow, so please bear with me until I can try to solve the problem, I will reply again soon. Regards, AR
Ashley Rains
Ashley Rains 2017-5-4
Finally got it sorted! Found some absolutely stupid re-used variables that were throwing everything out. Many thanks for the answers.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Adam
Adam 2017-5-3
There may be other things wrong, but these 2 lines are surely not what you want. You pass in p and v as input arguments, then you just set them to empty here:
p = []; % Celestial body initial positions vector
% Will be N by 2 e.g. p1 = [px,py]
v = []; % Celestial body initial velocities vector
% Also N by 2 e.g. v1 = [vx,vy]
It's not obvious what all the lines of code above this are all about either - they seem somewhat pointless.
You need to use the input arguments that you pass in - e.g. mass, not m as you do further down the code (or you could change your input argument name to 'm', but I much prefer 'mass' as it says what it is, 'm' is meaningless).
The biggest difference between a function and script is the arguments that you pass into it instead of creating within the function. Never over-write the input arguments!

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Data Type Identification 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by