johndhancock

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johndhancock

// from purpleair.com
// original source: https://docs.google.com/document/d/15ijz94dXJ-YAZLi9iZ_RaBwrZ4KtYeCy08goGBwnbCU/edit#

function aqiFromPM(pm) {

  if (isNaN(pm)) return "-"; 
  if (pm == undefined) return "-";
  if (pm < 0) return pm; 
  if (pm > 1000) return "-"; 
    /*      

johndhancock

[
  {
    "name": "Roslindale",
    "latlong": [-71.1245, 42.2913]
  },
  {
    "name": "Jamaica Plain",
    "latlong": [-71.1202, 42.3098]
  },
  {

johndhancock

ggplot

Tip Sheet

Color palettes

Saving custom color palettes to a variable, then using them in a ggplot chart

saving the palette

palette <- c(‘#d2848c”, “#fa807s”, “#ee9a00”, “#e0ffff”)

johndhancock

select {
  display: inline-block;
  font-weight: 400;
  padding: .5rem 1.5rem .5rem .5rem;
  border: 1px solid rgb(175,175,175);
  box-shadow: 0 1px 0 1px rgba(0,0,0,.04);
  border-radius: .5em;
  -moz-appearance: none;
  -webkit-appearance: none;
  appearance: none;

johndhancock

import sys
import os 
import re

dir_path = os.path.dirname(os.path.realpath(__file__)) + '/'

static_content_folder = 'static/custom/ai2html-output/'

# script takes two arguments "input" and "output" and optional static content folder arg
# .js extension is added to output

johndhancock

Terminal

• lsof -iTCP -sTCP:LISTEN -n -P: See what is running on which port
• kill {portnumber}: Stop whatever is running on designated port
• mongod --dbpath {dir_path}: Specify where mongodb should start up the database
• mongosh: Enter the mongodb shell

Mongoshell

• use {db_name}: Create a database by name
• db.{collection_name}.insertMany({json_array}): Insert multiple records into a database collection

johndhancock