Toward a

More-Than-Esri GIS

Some terms:

  • FOSS -> Free and Open Source Software
    • Freedom to access, change, and redistribute source code
  • FOSS4G - > Free and Open Source Software for Geospatial
  • Esri -> The company and their variety of software/service offerings

? >

  • Esri & FOSS4G aren't mutually exclusive
  • Esri & FOSS4G work well together!
  • Including FOSS4G may be better for your clients/community

Desktop GIS

Geoprocessing

Server

Web

Platform

ArcGIS = GIS

Advantages of Esri

  • Standardbearer for GIS
  • Competent COTS offerings
  • Authoritative  and thorough documentation
  • Centralized training resources and support
  • Can do a lot.

Disadvantages of Esri

  • Expensive, complicated pricing
  • Opaque development prioritization
  • Old code base can result in bottlenecks

Advantages of FOSS4G

  • Cost*
    • Savings can go toward developing/enhancing tools you need
  • Control over your stack
  • Adaptibility
    • What happens if you lose funding for Esri licenses?
  • Multi-Platform (Windows, OSX, Linux, Web)

Disadvantages of FOSS4G

  • Decentralized support
  • Less GUI, More command line
  • Open licenses may require sharing feature enhancements you paid for
    • Not really a disadvantage
    • May be tough to explain those in control of budget
  • LOTS of options

+

  • Take advantage of a more diverse toolset
  • Moderate buy-in to any single platform
  • Create workflows  that more precisely meet your needs

Openings for Esri & FOSS4G

Mixing Esri & FOSS4G

Case: Leadership Scott County Project Site Selection

Problem

Complete a service project that benefits the community

Criteria

  • <$1200
  • Must be completed by April 2017
  • In Georgetown
  • In an area that hasn't been served by past LSC group projects

Problem

Complete a service project that benefits the community

Criteria

  • <$1200
  • Must be completed by April 2017
  • In Georgetown
  • In an area that hasn't been served by past LSC group projects

Steps

  1. Research
  2. Analysis
  3. Presentation to Class
  4. Project Proposal

1. Research

  1. Where have past LSC classes done projects?
  2. Quick exploratory analysis
    1. Query service (Esri)
    2. Return GeoJSON! (Esri)
    3. Basic analysis in browser using Dropchop.io (FOSS4G)

2. Analysis

Task: Make an interactive map of the past LSC projects (Code):

<head>
    ...
    <script src="https://unpkg.com/leaflet@1.0.0/dist/leaflet-src.js"></script>
    <script src="https://unpkg.com/esri-leaflet@2.0.3"></script>
    <script src="https://unpkg.com/esri-leaflet-vector@1.0.3"></script>
    ....
</head>
<body>
    ...
    <div id="map"></div>
    ...
    <div id="basemaps-wrapper" class="leaflet-bar">
        Basemaps:
        <select name="basemaps" id="basemaps" onChange="changeBasemap(basemaps)">
            <option data-tile='esriVT' value="Spring">Street Map (Vector Tiles)</option>
            <option data-tile='ags' value="http://gis.gscplanning.com/arcgis/rest/services/basemaps/gscbase_streets/MapServer">GSCPC Streets (ArcGIS Server)</option>
            <option data-tile='tms' value="http://gscpcgis-tileify-ags-proxy.herokuapp.com/tiles/{z}/{x}/{y}?url=http%3A%2F%2Fgis.gscplanning.com%2Farcgis%2Frest%2Fservices%2Fbasemaps%2Fgscbase_bw%2FMapServer&transparent=true">GSCPC B&W (AGS-Proxy)</option>
            <option data-tile='tms' value="http://1.aerial.maps.cit.api.here.com/maptile/2.1/maptile/newest/hybrid.day/{z}/{x}/{y}/256/png8?app_id=jHW2qixQHBjQkbewy0cH&app_code=oO4iig4GLocEZTJb4NdUTg&lg=eng">Imagery + Streets (HERE)</option>
        </select>
    </div>
</body>
// Initialize map
var map = L.map('map'. {
    center: [38.201851, -84.548979],
    zoom: 14
});

function setBasemap(basemap) {
    if (layer) {
        map.removeLayer(layer);
        var listIndex = document.getElementById("basemaps").selectedIndex;
        var newBasemap = document.getElementsByTagName("option")[listIndex].dataset.tile;
        if (newBasemap == "esriVT") {
            layer = L.esri.Vector.basemap(basemap);
        } else if (newBasemap == "ags") {
          layer = L.esri.tiledMapLayer({
            url: basemap
          });
        } else if (newBasemap == "tms"){
            layer = L.tileLayer(basemap);
        }
        map.addLayer(layer);
    }
}
 // Change basemap
function changeBasemap(basemaps) {
    var basemap = basemaps.value;
    setBasemap(basemap);
}
// Add Esri vector tiles
var layer = L.esri.Vector
            .basemap('Spring')
            .addTo(map);

2. Analysis

Task: Make an interactive map of the past LSC projects (Code):

 L.esri.featureLayer({
    url: 'http://gis.gscplanning.com/arcgis/rest/services/CityLimits/MapServer/0',
    style: {
        color: "#f1c40f",
        weight: 2,
        fillOpacity: 0,
        dashArray: "5,5",
        pane: 'cityLimitsPane'
    }
}).addTo(map)

2. Analysis

Task: Make an interactive map of the past LSC projects (Code):

  • Create query of service
    • where: 1=1
    • Input Spatial Reference: 3857
    • Out Fields: description
    • Output Spatial Reference: 4326
    • Format: GEOJSON
 var promise = $.getJSON(
            "http://services1.arcgis.com/dpmGqj7FxlwlvK0y/arcgis/rest/services/lscProjects/FeatureServer/0/query?where=1%3D1&objectIds=&time=&geometry=&geometryType=esriGeometryEnvelope&inSR=3857&spatialRel=esriSpatialRelIntersects&resultType=none&distance=&units=esriSRUnit_Meter&outFields=description&returnGeometry=true&multipatchOption=&maxAllowableOffset=&geometryPrecision=&outSR=4326&returnIdsOnly=false&returnCountOnly=false&returnExtentOnly=false&returnDistinctValues=false&orderByFields=&groupByFieldsForStatistics=&outStatistics=&resultOffset=&resultRecordCount=&returnZ=false&returnM=false&quantizationParameters=&sqlFormat=none&f=pgeojson&token="
        );
//Create popup
function onEachFeature(feature, layer) {
    layer.bindPopup(feature.properties.description)
}
// Promise function for putting sites on map
promise.then(function(data) {
    var lscProjects = L.geoJson(data, {
        pointToLayer: function(feature, latlng) {
            return L.circleMarker(latlng, {
                radius: 5,
                opacity: 1,
                color: "#ffffff",
                fillOpacity: 1,
                fillColor: "#c0392b"
            })
        },
        onEachFeature: onEachFeature
    }).addTo(map);
// ...
// Some other stuff that will come later
// ...
});

2. Analysis

Task: Make an interactive map of the past LSC projects (Code):

// Within function for adding project locations...

// Generate buffers with TurfJS
var unit = 'miles';
var buffer10 = turf.buffer(data, 0.1, unit);
var buffer25 = turf.buffer(data, 0.25, unit);
var buffer50 = turf.buffer(data, 0.5, unit);
var buffer100 = turf.buffer(data, 1, unit);

// Style buffers
function buffStyle(feature) {
    return {
        color: "#e74c3c",
        opacity: 1,
        fillColor: "#ffffff",
        fillOpacity: 0
    }
}

// Generate buffer GeoJSON to be added and removed from map
var buffer10Layer = L.geoJson(buffer10, {
    style: buffStyle,
    pane: 'bufferPane'
}).addTo(map);
var buffer25Layer = L.geoJson(buffer25, {
    style: buffStyle,
    pane: 'bufferPane'
});
var buffer50Layer = L.geoJson(buffer50, {
    style: buffStyle,
    pane: 'bufferPane'
});
var buffer100Layer = L.geoJson(buffer100, {
    style: buffStyle,
    pane: 'bufferPane'
});

// Some code to turn off and on different buffers
// ...

WARNING: Poor Don't-Repeat-Yourself practices...

...but it works :)

3. Presentation to Class

Task: Present analysis and project recommendations to group

  • Present as a story map using Bootstrap and the jQuery plugin Storymap (FOSS, FOSS4G)

3. Presentation to Class

Task: Present analysis and project recommendations to group

// Example: Scroggin Park Contours
L.tileLayer('http://ryan-m-cooper.com/more-than-esri-gis/03_PresentationToGroup/data/scContours/{z}/{x}/{y}')

4. Project Proposal

Task: Add simple map of the project site to the project proposal 

  • GSCPC fork of LA Times print-map-maker (FOSS4G)
    • Originally only meant to work w/ Mapbox basemaps
    • Extended code to be able to handle more basemap sources!
  • Add GeoJSON features to map
    • Get GeoJSON of Scroggin Park outline from GSCPC server (Esri)
    • Create GeoJSON of coordinates for Scroggin Park basketball court using geojson.io (FOSS4G)

Explore more!

  • OSGeo-Live: Virtual machine loaded with a wide variety of FOSS4G applications
  • FOSS4G Conference Video Archive: Recordings of presentations from FOSS4G conferences
  • Awesome-Geospatial: Organized list of a wide variety of commercial and FOSS4G applications and resources
  • #gistribe: Weekly twitter chat with folks from all over the world who are interested in geospatial technology (Wed. 3:00EST/2:00CST)
  • The Spatial Community: A Slack channel focused on geospatial tech. Lots of active rooms with devs from Esri, Mapbox, Carto, and more
  • digital-geography.com: Platform-agnostic blog with lots of tutorials that include hybrid Esr-FOSS4G workflows
  • GeoHipster: Interviews with folks who are somehow involved with mappy things

Thanks!

Georgetown-Scott County Planning Commission

@maptastik

ryan-m-cooper.com

ryancooper729@gmail.com

Toward a More-Than-Esri GIS

By maptastik

Toward a More-Than-Esri GIS

Presentation on using Esri and FOSS4G together in beautiful harmony. Presented by Ryan Cooper on October 18, 2016 at KAMP 2016

  • 164
Loading comments...

More from maptastik