function::symline - Linux
Overview
function::symline is a specialized conversion utility that transforms a function-based linear model into a SymPy symbolic object. It provides an efficient means of converting linear models fitted using traditional statistical software like R or Python into a format that can be easily manipulated and analyzed symbolically.
Syntax
function::symline [options] function [arguments]
Options/Flags
- -c, –coef: Print coefficients as symbols.
- -n, –names: Print variable names as symbols.
- -s, –simplify: Simplify the expression before printing.
- -h, –help: Display this help message.
Examples
Simple Linear Model:
Convert a simple linear model y = 2x + 1
into SymPy:
function::symline "2*x + 1"
Multiple Linear Model:
Convert a multiple linear model y = 3x + 2y + 1
into SymPy with named variables:
function::symline -n "3*x + 2*y + 1"
Polynomials:
Convert a polynomial model y = x^2 + 3x + 2
into SymPy:
function::symline "x**2 + 3*x + 2"
Common Issues
- Missing Arguments: Ensure that all required arguments are specified.
- Syntax Errors: Verify that the function string is correctly formatted.
- Evaluation Errors: Check if the function is valid for symbolic evaluation.
Integration
SymPy Manipulation:
Once converted, the SymPy object can be manipulated using the full range of SymPy functions for further analysis, e.g.:
import sympy
model = function::symline("2*x + 1")
diff_model = sympy.diff(model, x) # Compute derivative
Command Pipelines:
function::symline can be integrated into command pipelines to automate complex tasks, e.g.:
echo "2*x + 1" | function::symline | sympy diff x
Related Commands
- scipy.stats.linregress: Fit linear regression models in Python.
- statsmodels.api.OLS: Fit linear regression models in R.
- sympy.diff: Compute derivatives of symbolic expressions.