Adding Where To Your Ruby Apps

@bsao - Robson Junior@rpepato - Roberto Pepato

Who are these guys ?

GIS?

Why GIS?

Why GIS?

http://video.esri.com/watch/41/network-analysis

Soft Part

reverse geocodingreverse geocodinggeocoding

routing

reverse geocodinggeocoding

routing

reverse geocoding

How to work with Geocoding in Ruby ?

see => http://railscasts.com/episodes/273-geocoder

Utilities

Mining

Security

Oil & Gas

More Applications ?

Agriculture

More Applications ?

Agriculture

Hard Part

Many Projections

Many Zones

A whole

A whole

Difficult Part

A whole

Difficult Part Easy Part

A whole

Easy Part

Market

OpenSource

Grass GIS

ESRI for Ruby ?

ESRI for Ruby ?

#fail

ESRI for Ruby ?

#fail

Designed for C, C++, .Net, Java, Flex and Python*

ESRI guys told us: Don’t worry, we will provide you with a

“REST” API

{ :get, :put, :post, :delete }

Seriously ? REST ?

No semanticsNo resources

rgis - hard (boring?) part made easy

using System.Windows.Controls;using System.Windows;using ESRI.ArcGIS.Client.Geometry;using ESRI.ArcGIS.Client.Tasks;using ESRI.ArcGIS.Client;using System.Collections.Generic;using ESRI.ArcGIS.Client.Symbols;

namespace ArcGISSilverlightSDK{ public partial class Project : UserControl { GeometryService geometryService; GraphicsLayer graphicsLayer;

public Project() { InitializeComponent();

geometryService = new GeometryService("http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer"); geometryService.ProjectCompleted += geometryService_ProjectCompleted; geometryService.Failed += geometryService_Failed;

graphicsLayer = MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer; }

private void ProjectButton_Click(object sender, System.Windows.RoutedEventArgs e) { double x; double y; if (!double.TryParse(XTextBox.Text, out x) || !double.TryParse(YTextBox.Text, out y)) { MessageBox.Show("Enter valid coordinate values."); return; }

MapPoint inputMapPoint = new MapPoint(x, y, new SpatialReference(4326));

geometryService.ProjectAsync(new List<Graphic>() { new Graphic() { Geometry = inputMapPoint } }, MyMap.SpatialReference, inputMapPoint); }

void geometryService_ProjectCompleted(object sender, GraphicsEventArgs e) { Graphic resultGraphic = e.Results[0];

if (resultGraphic.Geometry.Extent != null) { resultGraphic.Symbol = LayoutRoot.Resources["RoundMarkerSymbol"] as SimpleMarkerSymbol;

MapPoint resultMapPoint = resultGraphic.Geometry as MapPoint; resultGraphic.Attributes.Add("Output_CoordinateX", resultMapPoint.X); resultGraphic.Attributes.Add("Output_CoordinateY", resultMapPoint.Y);

MapPoint inputMapPoint = e.UserState as MapPoint; resultGraphic.Attributes.Add("Input_CoordinateX", inputMapPoint.X); resultGraphic.Attributes.Add("Input_CoordinateY", inputMapPoint.Y);

graphicsLayer.Graphics.Add(resultGraphic);

MyMap.PanTo(resultGraphic.Geometry); } else { MessageBox.Show("Invalid input coordinate, unable to project."); }

}

void geometryService_Failed(object sender, TaskFailedEventArgs e) { MessageBox.Show("Geometry Service error: " + e.Error); } }}

Project X, Y (ESRI .Net Silverlight API)

point = RGis::Point.new(15,17) new_point = point.project(:from => 4326, :to => 102100)

Project X, Y (rgis)

https://github.com/rgis/rgis

Questions?

https://github.com/rgis/rgis

@bsao@rpepato

Join us to make GIS easier:https://github.com/rgis

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