crmccreary

import numpy as NP
import math

def isclose(x, y, rtol=1.e-5, atol=1.e-8):
    return abs(x-y) <= atol + rtol * abs(y)

def euler_angles_from_rotation_matrix(R):
    '''
    From a paper by Gregory G. Slabaugh (undated),
    "Computing Euler angles from a rotation matrix

hrldcpr

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

bsweger

Useful Pandas Snippets

A personal diary of DataFrame munging over the years.

Data Types and Conversion

Convert Series datatype to numeric (will error if column has non-numeric values)
(h/t @makmanalp)

felixjones

PMX (Polygon Model eXtended) 2.1

This is an English description of the .PMX file format used in Miku Miku Dance (MMD).

PMX is the successor to the .PMD format (Polygon Model Data).

This is work-in-progress! Please leave feedback in the comments.

Todo

ryerh

注意：本文内容适用于 Tmux 2.3 及以上的版本，但是绝大部分的特性低版本也都适用，鼠标支持、VI 模式、插件管理在低版本可能会与本文不兼容。

Tmux 快捷键 & 速查表 & 简明教程

启动新会话：

tmux [new -s 会话名 -n 窗口名]

恢复会话：

ricgu8086

import numpy as np
from keras.models import Sequential
from keras.layers.core import Activation, Dense
from keras.optimizers import SGD

X = np.array([[0,0],[0,1],[1,0],[1,1]], "float32")
y = np.array([[0],[1],[1],[0]], "float32")

model = Sequential()
model.add(Dense(2, input_dim=2, activation='sigmoid'))

junian

# This code is based on tutorial by slicktechies modified as needed to use oauth token from Twitch.
# You can read more details at: https://www.junian.net/2017/01/how-to-record-twitch-streams.html
# original code is from https://slicktechies.com/how-to-watchrecord-twitch-streams-using-livestreamer/

import requests
import os
import time
import json
import sys
import subprocess

dusty-nv

#!/bin/bash
#
# EDIT:  this script is outdated, please see https://forums.developer.nvidia.com/t/pytorch-for-jetson-nano-version-1-6-0-now-available
#
sudo apt-get install python-pip

# upgrade pip
pip install -U pip
pip --version
# pip 9.0.1 from /home/ubuntu/.local/lib/python2.7/site-packages (python 2.7)

kingspp

import os
import yaml
import logging.config
import logging
import coloredlogs

def setup_logging(default_path='logging.yaml', default_level=logging.INFO, env_key='LOG_CFG'):
    """
    | **@author:** Prathyush SP
    | Logging Setup

steven2358

FFmpeg cheat sheet

A list of useful commands for the FFmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

Basic conversion