Paul Slavin pmslavin
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| =ZzAW |
pmslavin
/ win_common_documents.py
Last active
October 31, 2024 20:14
Python example of locating the Common Documents path on Windows using either the legacy CSIDL or Known Public Folder systems
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| import ctypes | |
| import uuid | |
| from ctypes import ( | |
| windll, | |
| wintypes | |
| ) | |
| # Pre-Vista CSIDL | |
| CSIDL_COMMON_DOCUMENTS = 46 |
pmslavin
/ pkupdate.py
Created
July 6, 2022 09:41
Script to update Pywr documents using `pandas_kwargs` between new and old formats
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| import argparse | |
| import json | |
| import sys | |
| def configure_args(args): | |
| parser = argparse.ArgumentParser( | |
| usage="%(prog)s [--remove-pandas-kwargs | --add-pandas-kwargs] <filename>", | |
| epilog="", | |
| description="Updates Pywr model `pandas_kwargs` syntax. A new file containing updated syntax is created." |
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| #include <vector> | |
| #include <iostream> | |
| #include <iomanip> | |
| #include <numeric> | |
| #include <cmath> | |
| static const int PTERMS = 3; | |
| /* Construct b vector of Ax=b */ | |
| double *build_bproduct(const std::vector<double>& xs, const std::vector<double>& ys) |
pmslavin
/ cholesky.py
Created
June 28, 2022 21:48
A manual (no numpy.polyfit...) quadratic regression by Cholesky
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| """ | |
| Second-degree polynomial fit of f(xseries) => yseries | |
| by Choleskification and Ly=b, L^x=y | |
| """ | |
| import numpy as np | |
| import matplotlib.pyplot as plt | |
| """ | |
| # Test series: y=x^2 | |
| xseries = [0, 0.5, 1.0, 1.5, 2.0, 2.5] |
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| def atan_ts(z): | |
| """ ___ oo (-1)^2n+1 * x^(2n+1) | |
| atan(z) = \ -------------------- | |
| /__ n=0 2n+1 | |
| """ | |
| a = 0 | |
| for n in range(17): | |
| q = 2.0*n+1 | |
| a += (-1)**n * z**q / q |
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| #!/usr/bin/env python | |
| """ | |
| Bitmap glyph-to-include codec | |
| ..####.. ..####.. | |
| .#.##.#. .#.##.#. | |
| ##.##.## -d ##.##.## | |
| ######## => 60,90,219,255,129,66,60,0 ==> ######## | |
| #......# #......# | |
| .#....#. .#....#. |
pmslavin
/ gist:91a9240e15badff383e399491563fb89
Created
April 18, 2017 22:28
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| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include "b64.h" | |
| const char *const base64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; | |
| const char pad = '='; | |
| char *b64_encode(const unsigned char *src, size_t src_len) | |
| { |
pmslavin
/ elitenames.py
Created
January 24, 2016 17:01
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| """ | |
| Generates full set of planet names across all galaxies | |
| in the Elite series of games. | |
| Original name generation algorithm by David Braben and Ian Bell. | |
| Leestian Evil Juice also to Christian Pinder and the Oolite crew. | |
| Usage: | |
| $ python ./elitenames.py <galaxy> |
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| import copy | |
| class Parent(object): | |
| def __init__(self): | |
| self.children = [] | |
| def addChild(self, child): | |
| self.children.append(child) |
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