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John J Czaplewski jczaplew

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@jczaplew
jczaplew / out.geojson
Created February 27, 2020 13:32
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jczaplew / test.geojson
Created February 27, 2020 13:27
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@jczaplew
jczaplew / tqdm-multithreading.py
Last active September 22, 2021 16:43
tqdm with multithreading
from tqdm import *
from queue import Queue
from threading import Thread
import time
THREADS = 4
class WorkerThread(Thread):
def __init__(self, queue):
Thread.__init__(self)
@jczaplew
jczaplew / cancelable.js
Created June 4, 2018 20:21
Cancelable async
class Cancelable {
constructor() {
this.canceled = false
}
count(val) {
return new Promise((resolve, reject) => {
setTimeout(function() {
resolve(val*val)
}, 1000)
@jczaplew
jczaplew / test.sql
Created December 14, 2017 22:06
PostGIS Multipolygon Join
This file has been truncated, but you can view the full file.
--
-- PostgreSQL database dump
--
-- Dumped from database version 9.6.4
-- Dumped by pg_dump version 9.6.4
SET statement_timeout = 0;
SET lock_timeout = 0;
@jczaplew
jczaplew / index.html
Created August 24, 2017 17:03
Supercluser + tilestrata + Mapbox GL JS
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8' />
<title></title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.39.1/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.39.1/mapbox-gl.css' rel='stylesheet' />
<style>
body { margin:0; padding:0; }
@jczaplew
jczaplew / setup.sh
Created January 25, 2017 23:51
Install mapnik 3.+ on Ubuntu 14.04 Trusty
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install git
sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
sudo apt-get update && sudo apt-get install gcc-4.9 g++-4.9
rm /usr/bin/g++ && sudo ln -s /usr/bin/g++-4.9 /usr/bin/g++
wget http://www.freedesktop.org/software/harfbuzz/release/harfbuzz-0.9.34.tar.bz2
@jczaplew
jczaplew / keybase.md
Created January 17, 2017 18:49
keybase.md

Keybase proof

I hereby claim:

  • I am jczaplew on github.
  • I am johnjcz (https://keybase.io/johnjcz) on keybase.
  • I have a public key whose fingerprint is 8FB0 0594 B47A F27F 890D 5EE6 969F F71E 2039 17F8

To claim this, I am signing this object:

@jczaplew
jczaplew / isConvex.py
Created January 12, 2017 18:52
'''
Adapted from http://stackoverflow.com/a/1881201/1956065 and http://stackoverflow.com/a/25304159/1956065
12 January 2017
John J Czaplewski
john@czaplewski.org
'''
def xProduct(v0, v1, v2):
dx1 = v1[0] - v0[0]
dy1 = v1[1] - v0[1]
@jczaplew
jczaplew / import_csv.py
Created November 28, 2016 03:09
Auto import csv to Postgres
import csv
import sys
import subprocess
with open(sys.argv[1], 'rb') as csvfile:
reader = csv.reader(csvfile)
header_row = reader.next()
cmd1 = "psql -U you dbname -c 'CREATE TABLE " + sys.argv[2] + " ("
for idx, column in enumerate(header_row):