Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

The DE-9IM Matrix in Details using ST_Relate: In Picture and SQL

The DE-9IM matrix is the foundation for understanding how spatial relationships are implemented in DBMSs like PostgreSQL, Oracle, and Microsoft SQL Server. This presentation makes a structure walk-through of most of the cases using a very large number of examples.

  • Login to see the comments

  • Be the first to like this

The DE-9IM Matrix in Details using ST_Relate: In Picture and SQL

  1. 1. DE-9IM in Details using ST Relate: In Picture and SQL Kristian Torp Department of Computer Science Aalborg University people.cs.aau.dk/˜torp torp@cs.aau.dk November 22, 2015 daisy.aau.dk Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 1 / 64
  2. 2. Outline 1 Introduction 2 Polygon/Polygon Examples 3 Polygon/Linestring Examples 4 Polygon/Point Examples 5 Linestring/Linesting Examples 6 Linestring/Point Examples 7 Summary Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 2 / 64
  3. 3. Learning Goals Goals Learn the details of the DE-9IM Matrix Understand how to use ST Relate to get the DE-9IM Matrix See that ST Relate is the most general of the relationship functions Note Will focus on 2D geometries Concepts are general Code is sometimes PostgreSQL specific PostgreSQL: ST Make2DBox, SQL Server : STMake2DBox Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 3 / 64
  4. 4. Outline 1 Introduction 2 Polygon/Polygon Examples 3 Polygon/Linestring Examples 4 Polygon/Point Examples 5 Linestring/Linesting Examples 6 Linestring/Point Examples 7 Summary Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 4 / 64
  5. 5. Interior, Boundary, Exterior of Geometries Point Interior Boundary Exterior Linestring Interior Boundary Exterior Polygon Interior Boundary Exterior Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 5 / 64
  6. 6. Overlap Result is a Point = 0D Geometry 1 Geometry 2 Overlap? Overlap Result Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 6 / 64
  7. 7. Overlap Result is a Linestring = 1D Geometry 1 Geometry 2 Overlap? Overlap Result Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 7 / 64
  8. 8. Overlap Result is a Polygon = 2D Geometry 1 Geometry 2 Overlap? Overlap Result Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 8 / 64
  9. 9. No Overlap = F Geometry 1 Geometry 2 Overlap? Overlap Result Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 9 / 64
  10. 10. ST Relate Example Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. F F 2 Bou. F F 1 Ext. 1 0 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (2 ,2) , ST Point ( 8 , 4 ) ) , ST MakeLine ( ST Point (1 ,1) , ST Point ( 6 , 1 ) ) ) −−> Actually returns DE−9IM Matrix as FF2FF1102 Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 10 / 64
  11. 11. Understanding ST Relate on PostGIS Result of ST Relate Value Description 0 A 0D overlap, i.e., result is point(s) 1 A 1D overlap, i.e., result is linesting(s) 2 A 2D overlap, i.e., result is polygon(s) F Geometries do not overlap F = False Additional Result on other DBMS Value Description T Geometries overlap 0D, 1D or 2D T = True ∗ Do not care if geometries overlap or not Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 11 / 64
  12. 12. Outline 1 Introduction 2 Polygon/Polygon Examples 3 Polygon/Linestring Examples 4 Polygon/Point Examples 5 Linestring/Linesting Examples 6 Linestring/Point Examples 7 Summary Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 12 / 64
  13. 13. ST Relate, Polygon/Polygon, One Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. 2 1 2 Bou. 1 0 1 Ext. 2 1 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (1 ,1) , ST Point ( 5 , 4 ) ) , ST MakeBox2D( ST Point (3 ,2) , ST Point ( 9 , 5 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 13 / 64
  14. 14. ST Relate, Polygon/Polygon, One, Details Int/Int Int/Bou Int/Ext Bou/int Bou/Bou Bou/Ext Ext/int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 14 / 64
  15. 15. ST Relate, Polygon/Polygon, Two Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. F F 2 Bou. F 1 1 Ext. 2 1 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (1 ,1) , ST Point ( 7 , 3 ) ) , ST MakeBox2D( ST Point (3 ,3) , ST Point ( 9 , 5 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 15 / 64
  16. 16. ST Relate, Polygon/Polygon, Two, Details Int/Int Int/Bou Int/Ext Bou/int Bou/Bou Bou/Ext Ext/int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 16 / 64
  17. 17. ST Relate, Three Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. 2 1 2 Bou. F F 1 Ext. F F 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (1 ,1) , ST Point ( 9 , 5 ) ) , ST MakeBox2D( ST Point (2 ,2) , ST Point ( 8 , 4 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 17 / 64
  18. 18. ST Relate, Polygon/Polygon, Three, Details Int/Int Int/Bou Int/Ext Bou/int Bou/Bou Bou/Ext Ext/int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 18 / 64
  19. 19. ST Relate, Polygon/Polygon, Four Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. F F 2 Bou. F F 1 Ext. 2 1 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (1 ,1) , ST Point ( 4 , 3 ) ) , ST MakeBox2D( ST Point (6 ,3) , ST Point ( 9 , 5 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 19 / 64
  20. 20. ST Relate, Polygon/Polygon, Four, Details Int/Int Int/Bou Int/Ext Bou/int Bou/Bou Bou/Ext Ext/int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 20 / 64
  21. 21. ST Relate, Polygon/Polygon, Five Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. 2 F F Bou. F 1 F Ext. F F 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (2 ,1) , ST Point ( 8 , 5 ) ) , ST MakeBox2D( ST Point (2 ,1) , ST Point ( 8 , 5 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 21 / 64
  22. 22. ST Relate, Polygon/Polygon, Four, Details Int/Int Int/Bou Int/Ext Bou/int Bou/Bou Bou/Ext Ext/int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 22 / 64
  23. 23. Outline 1 Introduction 2 Polygon/Polygon Examples 3 Polygon/Linestring Examples 4 Polygon/Point Examples 5 Linestring/Linesting Examples 6 Linestring/Point Examples 7 Summary Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 23 / 64
  24. 24. ST Relate, Polygon/Linestring, One Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. F F 2 Bou. F F 1 Ext. 1 0 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (2 ,2) , ST Point ( 8 , 4 ) ) , ST MakeLine ( ST Point (1 ,1) , ST Point ( 6 , 1 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 24 / 64
  25. 25. ST Relate, Polygon/Linestring, One, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 25 / 64
  26. 26. ST Relate, Polygon/Linestring, Two Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. 1 0 2 Bou. 0 F 1 Ext. 1 0 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (2 ,2) , ST Point ( 8 , 4 ) ) , ST MakeLine ( ST Point (1 ,3) , ST Point ( 6 , 3 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 26 / 64
  27. 27. ST Relate, Polygon/Linestring, One, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 27 / 64
  28. 28. ST Relate, Polygon/Linestring, Three Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. 1 0 2 Bou. F F 1 Ext. F F 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (2 ,2) , ST Point ( 8 , 4 ) ) , ST MakeLine ( ST Point (3 ,3) , ST Point ( 7 , 3 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 28 / 64
  29. 29. ST Relate, Polygon/Linestring, Three, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 29 / 64
  30. 30. ST Relate, Polygon/Linestring, Four Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. F F 2 Bou. 1 0 1 Ext. F F 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (2 ,2) , ST Point ( 8 , 4 ) ) , ST MakeLine ( ST Point (3 ,4) , ST Point ( 7 , 4 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 30 / 64
  31. 31. ST Relate, Polygon/Linestring, Four, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 31 / 64
  32. 32. ST Relate, Polygon/Linestring, Five Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. 1 F 2 Bou. 0 F 1 Ext. 1 0 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (2 ,2) , ST Point ( 8 , 4 ) ) , ST MakeLine ( ST Point (1 ,3) , ST Point ( 9 , 3 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 32 / 64
  33. 33. ST Relate, Polygon/Linestring, Five, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 33 / 64
  34. 34. ST Relate, Polygon/Linestring, Six Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. F F 2 Bou. F 0 1 Ext. 1 0 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (2 ,2) , ST Point ( 8 , 4 ) ) , ST MakeLine ( ST Point (2 ,1) , ST Point ( 8 , 2 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 34 / 64
  35. 35. ST Relate, Polygon/Linestring, Six, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 35 / 64
  36. 36. ST Relate, Polygon/Linestring, Seven Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. 1 0 2 Bou. F 0 1 Ext. F F 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (2 ,2) , ST Point ( 8 , 4 ) ) , ST MakeLine ( ST Point (2 ,2) , ST Point ( 7 , 3 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 36 / 64
  37. 37. ST Relate, Polygon/Linestring, Seven, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 37 / 64
  38. 38. ST Relate, Polygon/Linestring, Eight Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. 1 F 2 Bou. F 0 1 Ext. F F 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (2 ,2) , ST Point ( 8 , 4 ) ) , ST MakeLine ( ST Point (2 ,2) , ST Point ( 8 , 4 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 38 / 64
  39. 39. ST Relate, Polygon/Linestring, Eight, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 39 / 64
  40. 40. Outline 1 Introduction 2 Polygon/Polygon Examples 3 Polygon/Linestring Examples 4 Polygon/Point Examples 5 Linestring/Linesting Examples 6 Linestring/Point Examples 7 Summary Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 40 / 64
  41. 41. ST Relate, Polygon/Point, One Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. F F 2 Bou. F F 1 Ext. 0 F 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (2 ,2) , ST Point ( 8 , 4 ) ) , ST Point ( 5 , 1 ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 41 / 64
  42. 42. ST Relate, Polygon/Point, One, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 42 / 64
  43. 43. ST Relate, Polygon/Point, Two Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. 0 F 2 Bou. F F 1 Ext. F F 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (2 ,2) , ST Point ( 8 , 4 ) ) , ST Point ( 5 , 3 ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 43 / 64
  44. 44. ST Relate, Polygon/Point, Two, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 44 / 64
  45. 45. ST Relate, Polygon/Point, Three Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. F F 2 Bou. 0 F 1 Ext. F F 2 Example (As SQL) select ST Relate ( ST MakeBox2D( ST Point (2 ,2) , ST Point ( 8 , 4 ) ) , ST Point ( 5 , 4 ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 45 / 64
  46. 46. ST Relate, Polygon/Point, Three, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 46 / 64
  47. 47. Outline 1 Introduction 2 Polygon/Polygon Examples 3 Polygon/Linestring Examples 4 Polygon/Point Examples 5 Linestring/Linesting Examples 6 Linestring/Point Examples 7 Summary Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 47 / 64
  48. 48. ST Relate, Linestring/Linestring, One Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. F F 1 Bou. F F 0 Ext. 1 0 2 Example (As SQL) select ST Relate ( ST MakeLine ( ST Point (1 ,3) , ST Point ( 6 , 3 ) ) , ST MakeLine ( ST Point (5 ,2) , ST Point ( 9 , 2 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 48 / 64
  49. 49. ST Relate, Linestring/Linestring, One, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 49 / 64
  50. 50. ST Relate, Linestring/Linestring, Two Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. F F 1 Bou. F 0 0 Ext. 1 0 2 Example (As SQL) select ST Relate ( ST MakeLine ( ST Point (1 ,3) , ST Point ( 6 , 3 ) ) , ST MakeLine ( ST Point (6 ,3) , ST Point ( 9 , 3 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 50 / 64
  51. 51. ST Relate, Linestring/Linestring, Two, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 51 / 64
  52. 52. ST Relate, Linestring/Linestring, Three Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. 1 0 1 Bou. 0 F 0 Ext. 1 0 2 Example (As SQL) select ST Relate ( ST MakeLine ( ST Point (1 ,3) , ST Point ( 6 , 3 ) ) , ST MakeLine ( ST Point (4 ,3) , ST Point ( 9 , 3 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 52 / 64
  53. 53. ST Relate, Linestring/Linestring, Three, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 53 / 64
  54. 54. ST Relate, Linestring/Linestring, Four Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. 1 F F Bou. F 0 F Ext. F F 2 Example (As SQL) select ST Relate ( ST MakeLine ( ST Point (1 ,3) , ST Point ( 6 , 3 ) ) , ST MakeLine ( ST Point (1 ,3) , ST Point ( 6 , 3 ) ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 54 / 64
  55. 55. ST Relate, Linestring/Linestring, Four, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 55 / 64
  56. 56. Outline 1 Introduction 2 Polygon/Polygon Examples 3 Polygon/Linestring Examples 4 Polygon/Point Examples 5 Linestring/Linesting Examples 6 Linestring/Point Examples 7 Summary Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 56 / 64
  57. 57. ST Relate, Linestring/Point, One Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. F F 1 Bou. F F 0 Ext. 0 F 2 Example (As SQL) select ST Relate ( ST MakeLine ( ST Point (2 ,3) , ST Point ( 8 , 3 ) ) , ST Point ( 5 , 1 ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 57 / 64
  58. 58. ST Relate, Linestring/Point, One, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 58 / 64
  59. 59. ST Relate, Linestring/Point, Two Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. 0 F 1 Bou. F F 0 Ext. F F 2 Example (As SQL) select ST Relate ( ST MakeLine ( ST Point (2 ,3) , ST Point ( 8 , 3 ) ) , ST Point ( 5 , 3 ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 59 / 64
  60. 60. ST Relate, Linestring/Point, Two, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 60 / 64
  61. 61. ST Relate, Linestring/Point, Three Example (As Picture) Example (DE-9IM Matrix) Int. Bou. Ext. Int. F F 1 Bou. 0 F 0 Ext. F F 2 Example (As SQL) select ST Relate ( ST MakeLine ( ST Point (2 ,3) , ST Point ( 8 , 3 ) ) , ST Point ( 8 , 3 ) ) Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 61 / 64
  62. 62. ST Relate, Linestring/Point, Three, Details Int/Int Int/Bou Int/Ext Bou/Int Bou/Bou Bou/Ext Ext/Int Ext/Bou Ext/Ext Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 62 / 64
  63. 63. Outline 1 Introduction 2 Polygon/Polygon Examples 3 Polygon/Linestring Examples 4 Polygon/Point Examples 5 Linestring/Linesting Examples 6 Linestring/Point Examples 7 Summary Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 63 / 64
  64. 64. Summary: ST Relate Main Points ST Relate covers all the cases ST Relate fairly complex to understand and use Kristian Torp (Aalborg University) DE-9IM in Details using ST Relate: In Picture and SQL November 22, 2015 64 / 64

×