Solving library for simultaneous equations and inequalities
Project description
equid
下の方に日本語の説明があります
Overview
- Solving library for simultaneous equations and inequalities
Usage
import equid as eq
# Example of solving an equation
res = eq.solve(cond = (eq.x + 3 == 5))
print(res) # -> {"x": 2.0}
# Inequalities and series are also possible. If there is more than one solution, one is randomly chosen.
cond = (
(eq.x + 2 == eq.y) &
(eq.x >= 10)
)
res = eq.solve(cond = cond)
print(res) # -> e.g. {"x": 10.0, "y": 12.0}
# Assign
print((eq.x + 5).fix(x = 3)) # -> 8
print((5 + eq.x + eq.y).fix(x = 3)) # -> (+ 8 (var y))
# Mathematical programming (find the one with the smallest loss among those satisfying cond)
res = eq.solve(cond = (3 * eq.x - eq.y == 0),
loss = (eq.y - 1) ** 2)
print(res) # -> {"x": 0.333, "y": 1}
# convert to javascript code
print(eq.to_js((3 + eq.x) ** 2)) # -> Running "(OUTPUT_STR({x: 1}))" in javascript will output 16.
# Algorithmic differentiation (automatic differentiation)
print((eq.x ** 2).diff("x")) # -> (* 2 (var x))
# Interconversion between json format and equid object
formula = (3 + eq.x) ** 2
print(formula.to_json()) # -> ["**", ["+", 3, ["var", "x"]], 2]
print(eq.from_json('["**", ["+", 3, ["var", "x"]], 2]')) # -> Formula object
Advanced Usage
# 執筆中 (under_construction)
概略
- 連立方程式/不等式の求解ライブラリ
利用例
import equid as eq
# 方程式を解く例
res = eq.solve(cond = (eq.x + 3 == 5))
print(res) # -> {"x": 2.0}
# 不等式・連立もできる。解が複数あるときはひとつ選ばれる
cond = (
(eq.x + 2 == eq.y) &
(eq.x >= 10)
)
res = eq.solve(cond = cond)
print(res) # -> 例えば{"x": 10.0, "y": 12.0}
# 代入
print((eq.x + 5).fix(x = 3)) # -> 8
print((5 + eq.x + eq.y).fix(x = 3)) # -> (+ 8 (var y))
# 数理計画 (condを満たす中でlossが最小のものを見つける)
res = eq.solve(cond = (3 * eq.x - eq.y == 0),
loss = (eq.y - 1) ** 2)
print(res) # -> {"x": 0.333, "y": 1}
# javascriptコードに変換
print(eq.to_js((3 + eq.x) ** 2)) # -> 「(出てきた文字列)({x: 1})」をjavascriptで実行すると16を出力する
# アルゴリズム的微分 (自動微分)
print((eq.x ** 2).diff("x")) # -> (* 2 (var x))
# json形式とequidオブジェクトの相互変換
formula = (3 + eq.x) ** 2
print(formula.to_json()) # -> ["**", ["+", 3, ["var", "x"]], 2]
print(eq.from_json('["**", ["+", 3, ["var", "x"]], 2]')) # -> Formula object
発展的な利用例
# 執筆中 (under_construction)
Project details
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distribution
equid-0.1.2.tar.gz
(9.2 kB
view hashes)
Built Distribution
equid-0.1.2-py3-none-any.whl
(8.9 kB
view hashes)