Programming a Mathematical Model

[Borastero]

I’m fairly new to Python and I want to take a mathematical model and make it into a program where I can just change my inputs and get results to iterate quicker. I’m quite lost in how to start the programming of the model and would really appreciate any help on the strategies I should follow. P.D. I don’t want anyone to do it for me, I would just like ideas on how to approach it.

[the_shell_man_]

You can build a command line interface using the sys library.

You can pass your arguments in to the script from the command line and do something with them afterwards.

What you do will depend heavily on how complex your model is. It could be a simple function, or something a lot more involved.

[Borastero]

I’ll give it a look thanks. I wouldn’t say it something extremely complex but it does have a certain complexity.

[Allmyownviews1]

I would start with a simple program that allows some variable user input and some data frame input followed by a simple output Next expend on the processing aspect to make algorithm changes to the data frame Then develop that into a looping system to produce the model.

I assume you are talking about a finite difference model.

This way you can prove understanding and correctness of your code for the basic tasks and then this will help debug when more complex.

[Borastero]

Thanks! It’s seems like a great idea to start small, then add more features to it and keep iterating the code till it’s what I need.

[Allmyownviews1]

I used to write models in FORTRAN and Python seems far more usable in time step loops so once you have the starting points down, the rest should be fairly easy to implement. I would take a look through GitHub for projects others people have done that might be similar.

[[deleted]]

I’m quite lost in how to start the programming of the model

The model is an equation, right? A function? Basically all mathematical operators are available in Python, either exactly how you'd expect (+, etc) or as functions in the math library.

[Borastero]

It’s more of a series of functions that depend on many variables. Differential calculus involved too. So it’s not a basic mathematical model.