luiarthur

luiarthur

for (i in 1:100) {
  Sys.sleep(1)
  current_time = format(Sys.time(),usetz = TRUE)
  cat(current_time, "|", "Iteration", i, "|", "Hello!", "\n")
}

luiarthur

# Activate environment 
import Pkg; Pkg.activate(".")

# If you are installing PyCall and PyPlot for the first time, just do
ENV["PYTHON"]=""

# before running
Pkg.add("PyPlot")

# If desired, install `PyCall` as well

luiarthur

# Author: Arthur Lui
# Last modified 31 August, 2019.

# Parse a git repo name, if possible.
parse_git_reponame() {
  basename `git rev-parse --show-toplevel 2> /dev/null` 2> /dev/null
}

# Parse the current branch of a git repo, if possible.
parse_git_branch() {

luiarthur

{
    "shortcuts": [
        {
            "command": "notebook:run-all-below",
            "keys": [
                "Ctrl Shift Enter"
            ],
            "selector": ".jp-Notebook:focus"
        },
        {

luiarthur

import numpy as np

def correlation_from_covariance(covariance):
    v = np.sqrt(np.diag(covariance))
    outer_v = np.outer(v, v)
    correlation = covariance / outer_v
    correlation[covariance == 0] = 0
    return correlation

luiarthur

1. Create a bookmark in your browser
2. Copy and paste the code below into the url field.
3. When viewing a jupyter notebook on GitHub, click on the bookmark to view the notebook in nbviewer.

javascript: (() => {
  const url = window.location.href;
  const nbviewer_url = "https://nbviewer.org/github/";
  const new_url = nbviewer_url + url.split("https://github.com/")[1];
 window.open(new_url);

luiarthur

import numpy as np

def gaussian_kernel(X, knots, sd):
    """
    X: points to evaluate kernel (n x q)
    knots: kernel locations (m x q)
    sd: kernel width
    """
    diff = X[..., None] - knots.T[None, ...]  # n x q x m
    ss = np.sum(diff ** 2, axis=1)  # n x m

luiarthur

"""
Basic progress bar.
"""

from datetime import timedelta, datetime
import time

def pbrange(*args, **kwargs):
    return pbar(range(*args), **kwargs)

luiarthur

# Number of cores to use.
NCORES=3

# Use parenthesis to suppress superfluous output.
(
  for x in `seq 8`
  do
    ((i%NCORES)) && ((i++==0)) && wait;
    echo $x && sleep 2 &  # comomand to execute.
  done