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Dave Michelson daveism

  • UNC Asheville's National Environmental Modeling and Analysis Center (NEMAC)
  • Asheville North Carolina
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@chriswhong
chriswhong / RadiusMode.js
Created March 1, 2018 12:04
RadiusMode, a custom mode for mapbox-gl-draw for drawing a radius
// custom mapbopx-gl-draw mode that modifies draw_line_string
// shows a center point, radius line, and circle polygon while drawing
// forces draw.create on creation of second vertex
import MapboxDraw from 'mapbox-gl-draw';
import numeral from 'numeral';
import lineDistance from 'npm:@turf/line-distance';
const RadiusMode = MapboxDraw.modes.draw_line_string;
@willium
willium / population.R
Created November 14, 2015 09:42
Population variance and standard deviation in R
pop.var <- function(x) var(x) * (length(x)-1) / length(x)
pop.sd <- function(x) sqrt(pop.var(x))
<?
/////////////////////
// slack2html
// by @levelsio
/////////////////////
//
/////////////////////
// WHAT DOES THIS DO?
/////////////////////
//
@pkuczynski
pkuczynski / LICENSE
Last active November 19, 2025 14:34
Read YAML file from Bash script
MIT License
Copyright (c) 2014 Piotr Kuczynski
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWAR
@wsargent
wsargent / docker_cheat.md
Last active September 23, 2025 16:14
Docker cheat sheet
@mollietaylor
mollietaylor / map-new-legend.R
Created September 29, 2013 23:02
Custom Legend in R
library(OIdata)
library(RColorBrewer)
library(classInt)
# load state data from OIdata package:
data(state)
# set constants:
nclr <- 8 # number of bins
min <- 0 # theoretical minimum
@christianroman
christianroman / gist:6516864
Last active February 10, 2020 16:28
Install PostgreSQL 9.3.1 + PostGIS + PGRouting on CentOS 6.4
rpm -Uvh http://yum.postgresql.org/9.3/redhat/rhel-6-x86_64/pgdg-centos93-9.3-1.noarch.rpm
yum install postgresql93 postgresql93-server postgresql93-contrib postgresql93-devel postgis2_93 postgis2_93-utils
#Configure PostgreSQL
chkconfig postgresql-9.3 on
service postgresql-9.3 initdb
service postgresql-9.3 start
# Create PostGIS template
@dergachev
dergachev / GIF-Screencast-OSX.md
Last active October 31, 2025 16:45
OS X Screencast to animated GIF

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Screencapture GIF

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

@sandys
sandys / table_to_csv.rb
Created October 18, 2012 10:04
convert a html table to CSV using ruby
# run using ```rvm jruby-1.6.7 do jruby "-J-Xmx2000m" "--1.9" tej.rb```
require 'rubygems'
require 'nokogiri'
require 'csv'
f = File.open("/tmp/preview.html")
doc = Nokogiri::HTML(f)
csv = CSV.open("/tmp/output.csv", 'w',{:col_sep => ",", :quote_char => '\'', :force_quotes => true})
@samgiles
samgiles / postgistogeojson.js
Created April 4, 2012 07:38
A function that converts a PostGIS query into a GeoJSON object.
/*
* A function that converts a PostGIS query into a GeoJSON object.
* Copyright (C) 2012 Samuel Giles <sam@sam-giles.co.uk>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,