These are the slides of my presentation at RubyConfBr 2011

1. Adding Where To
Your Ruby Apps
@bsao - Robson Junior
@rpepato - Roberto Pepato

2. Who are these guys ?

3. GIS?

4. Why GIS?

5. Why GIS?

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

7. Soft Part

8. reverse geocoding reverse geocoding reverse geocoding reverse geocoding
geocoding geocoding
routing routing

9. How to work with
Geocoding in Ruby ?

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

12. Utilities

13. Mining

14. Security

15. Oil & Gas

16. More Applications ?

17. More Applications ?

18. Hard Part

19. Many Projections

20. Many Zones

21. A whole

22. A whole
Difficult Part

23. A whole
Difficult Part Easy Part

24. A whole
Easy Part

25. Market

26. OpenSource
Grass GIS

28. ESRI for Ruby ?

29. ESRI for Ruby ?
#fail

30. ESRI for Ruby ?
#fail
Designed for C, C++, .Net, Java, Flex and Python*

31. ESRI guys told us:
Don’t worry, we will provide you with a
“REST” API
{ :get, :put, :post, :delete }

32. Seriously ? REST ?
No semantics
No resources

33. rgis - hard (boring?)
part made easy

35. using System.Windows.Controls;
Project X,Y (ESRI .Net Silverlight API)
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);
}
}
}

37. Project X,Y (rgis)
point = RGis::Point.new(15,17)
new_point = point.project(:from => 4326, :to => 102100)

38. https://github.com/rgis/rgis

39. Questions?
https://github.com/rgis/rgis

40. Text
@bsao
@rpepato
Join us to make GIS easier:
https://github.com/rgis