Zev Ross zross

## format_dates.md

      
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                Formatting dates in R reference
              
          
    R date formatting

#strptime() to convert from character to date/time
#format() to reformat the date

format(strptime("2001-05-05", "%Y-%m-%d"), "%A %B%e, %Y")
#"Saturday May 5, 2001"

format(strptime("2001-05-05 01:05 PM", "%Y-%m-%d %I:%M %p"), "%d/%m/%Y %H:%M")

  
## spatial_example.R
# An example of spatial analysis with R that involves grabbing data
# from a PostGIS database, joining to tabular data, projecting
# simplifying and creating an interactive map.

# This data is publicly available but requires some processing
# if you want the county boundaries you can find them here:

# cftp://ftp2.census.gov/geo/tiger/TIGER2016/COUNTY/

# The tabular data requires some processing but the raw data

## index.html
<!DOCTYPE html>
<html>
  <head>
    <title>Place details</title>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <style>
      html, body, #map-canvas {
        height: 100%;
        margin: 0px;

## index.html
<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.7/leaflet.css" />
    <script src="http://d3js.org/d3.v3.min.js" type="text/javascript"></script>
    <script src="http://cdn.leafletjs.com/leaflet-0.7/leaflet.js"></script>
    <script src='https://api.tiles.mapbox.com/mapbox.js/v1.6.4/mapbox.js'></script>
    <link href='https://api.tiles.mapbox.com/mapbox.js/v1.6.4/mapbox.css' rel='stylesheet' />

## businesses.json

      
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              April 4, 2024 23:29
            
              
                Leaflet.js Tips, Step 6 (add hovers)
              
          
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## businesses.json

      
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              March 25, 2024 14:08
            
              
                Leaflet.js Tips, Step 3 (markers and fitBounds)
              
          
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## esri-leaflet.js
/*! Esri-Leaflet - v0.0.1-beta.4 - 2014-03-09
*   Copyright (c) 2014 Environmental Systems Research Institute, Inc.
*   Apache License*/
L.esri={_callback:{}},L.esri.Support={CORS:!!(window.XMLHttpRequest&&"withCredentials"in new XMLHttpRequest)},L.esri.RequestHandlers={CORS:function(a,b,c,d){var e=new XMLHttpRequest;b.f="json",e.onreadystatechange=function(){var a;if(4===e.readyState){try{a=JSON.parse(e.responseText)}catch(b){a={error:"Could not parse response as JSON."}}d?c.call(d,a):c(a)}},e.open("GET",a+"?"+L.esri.Util.serialize(b),!0),e.send(null)},JSONP:function(a,b,c,d){var e="c"+(1e9*Math.random()).toString(36).replace(".","_");b.f="json",b.callback="L.esri._callback."+e;var f=L.DomUtil.create("script",null,document.body);f.type="text/javascript",f.src=a+"?"+L.esri.Util.serialize(b),f.id=e,L.esri._callback[e]=function(a){d?c.call(d,a):c(a),document.body.removeChild(f),delete L.esri._callback[e]}}},L.esri.get=L.esri.Support.CORS?L.esri.RequestHandlers.CORS:L.esri.RequestHandlers.JSONP,L.esri.Mixins={},

## california_nad83_zones_min.geojson

      
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                Using geojson with Google Maps API
              
          
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## businesses.json

      
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                Leaflet.js Tips, Step 7 (filter buttons)
              
          
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## county.json

      
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              May 3, 2023 19:23
            
              
                Putting TopoJSON on a Google Map
              
          
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	# An example of spatial analysis with R that involves grabbing data
	# from a PostGIS database, joining to tabular data, projecting
	# simplifying and creating an interactive map.

	# This data is publicly available but requires some processing
	# if you want the county boundaries you can find them here:

	# cftp://ftp2.census.gov/geo/tiger/TIGER2016/COUNTY/

	# The tabular data requires some processing but the raw data
	<!DOCTYPE html>
	<html>
	<head>
	<title>Place details</title>
	<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
	<meta charset="utf-8">
	<style>
	html, body, #map-canvas {
	height: 100%;
	margin: 0px;
	/*! Esri-Leaflet - v0.0.1-beta.4 - 2014-03-09
	* Copyright (c) 2014 Environmental Systems Research Institute, Inc.
	* Apache License*/
	L.esri={_callback:{}},L.esri.Support={CORS:!!(window.XMLHttpRequest&&"withCredentials"in new XMLHttpRequest)},L.esri.RequestHandlers={CORS:function(a,b,c,d){var e=new XMLHttpRequest;b.f="json",e.onreadystatechange=function(){var a;if(4===e.readyState){try{a=JSON.parse(e.responseText)}catch(b){a={error:"Could not parse response as JSON."}}d?c.call(d,a):c(a)}},e.open("GET",a+"?"+L.esri.Util.serialize(b),!0),e.send(null)},JSONP:function(a,b,c,d){var e="c"+(1e9*Math.random()).toString(36).replace(".","_");b.f="json",b.callback="L.esri._callback."+e;var f=L.DomUtil.create("script",null,document.body);f.type="text/javascript",f.src=a+"?"+L.esri.Util.serialize(b),f.id=e,L.esri._callback[e]=function(a){d?c.call(d,a):c(a),document.body.removeChild(f),delete L.esri._callback[e]}}},L.esri.get=L.esri.Support.CORS?L.esri.RequestHandlers.CORS:L.esri.RequestHandlers.JSONP,L.esri.Mixins={},