ciscorn / tide_main.rs

Last active January 24, 2025 06:28

tide, tidal, 天文潮位

	///
	///
	/// 参考: https://www1.kaiho.mlit.go.jp/kenkyu/report/rhr60/rhr60_r_01.pdf
	/// 潮汐表の計算について海洋情報部研究報告第60号令和4年3月18日
	use chrono::{Datelike, NaiveDate};

	/// 各分潮の角速度 (度/時)
	const OMEGAS: [f64; 60] = [
	0.0410686, 0.0821373, 0.5443747, 1.0158958, 1.0980331, 12.8542862, 12.9271398, 13.3986609,
	13.4715145, 13.9430356, 14.0251729, 14.4920521, 14.5695476, 14.9178647, 14.9589314, 15.0000000,

ciscorn / build_wgrib2.sh

Created August 3, 2024 11:10

Build wgrib2 on macOS

	brew install libomp netcdf

	export OpenMP_ROOT=$(brew --prefix)/opt/libomp

	cd wgrib2-3.3.0/
	mkdir -p build
	cd build

	cmake .. -DUSE_NETCDF3=0 -DUSE_NETCDF4=1

ciscorn / plot_webmerc_to_wgs84.py

Last active February 28, 2022 01:38

	import math
	import numpy as np
	from matplotlib import pyplot as plt


	def webMercatorToLngLat(mx: float, my: float) -> tuple[float, float]:
	lng = (mx * 2 - 1) * 180.0
	lat = (my * 2 - 1) * 180.0
	lat = (
	-180

ciscorn / plot_ses_send_stats.py

Created October 24, 2021 12:25

Plot Amazon SES Send Statistics

	import boto3
	from datetime import datetime, timedelta
	import zoneinfo
	import pandas

	from matplotlib.dates import DateFormatter
	import matplotlib.pyplot as plt

	JST = zoneinfo.ZoneInfo("Asia/Tokyo")

ciscorn / unicode_normalization.md

Last active July 25, 2024 06:24

Normalizing Unicode strings in Python / Go / Rust

NFC, NFD, NFKC, NFKD

input:

ｉｔ’ｓäå（１−2)ドﾌﾞﾛク㍿

result:

ciscorn / go-tour-web-crawler-without-mutex.go

Last active September 25, 2021 06:53

A Tour of Go: Exercise: Web Crawler without Mutex (https://tour.golang.org/concurrency/10)

	package main

	import (
	"fmt"
	)

	type Fetcher interface {
	Fetch(url string) (body string, urls []string, err error)
	}

ciscorn / circuitpython_compression.py

Last active June 27, 2023 19:21

[PoC] A more effective compression algorithm for CircuitPython's i18n strings. (merged)

	from collections import Counter
	import re

	import huffman


	class TextSplitter:
	def __init__(self, words):
	words.sort(key=lambda x: len(x), reverse=True)
	self.words = set(words)

ciscorn / matplotlib_animation_wave.py

Last active December 12, 2022 04:07

matplotlib animation:: 1-d & 2-d wave equation

	from mpl_toolkits.mplot3d import Axes3D
	from matplotlib.pylab import plt
	from matplotlib import animation, cm
	import numpy as np
	from scipy.signal import convolve, convolve2d


	class Wave1D:
	K = np.array([1, -2, 1])

ciscorn / epub_pagertl.py

Created September 22, 2018 03:01

EPUBの見開き方向を right-to-left (縦書き用) に変える

	import sys
	from zipfile import ZipFile
	import lxml.etree as et

	for path in sys.argv[1:]:
	zf = ZipFile(path, mode='a')

	with zf.open('OEBPS/content.opf', mode='r') as f:
	doc = et.parse(f)

ciscorn / install_pillow_simd.sh

Created May 4, 2018 07:50

Install pillow-simd on Ubuntu

Taku Fukada ciscorn

Normalizing Unicode strings in Python / Go / Rust