SDO_GEOM. VALIDATE_GEOMETRY_WITH_CONTEXT for the validation of the polygon geometry

Similar Questions

• sdo_geom.validate_geometry_with_context returns the error for valid polygon

  Hi people,
  
  I found a strange case where sdo_geom.validate_geometry_with_context returns an error:
  Select sdo_geom.validate_geometry_with_context (SDO_GEOMETRY (2003, 8307, NULL, SDO_ELEM_INFO_ARRAY (1, 1003, 1), SDO_ORDINATE_ARRAY (0,0, 51.9273, 0.3556, 51.9273, 0.3910, 51.9274, 0.1964, 51.9274, 0,0, 51.9273)), 1) twice;
  13349 [element < 1 >] [ring < 1 >] [m < 3 >] [edge < 1 >]
  
  Tolerance to 8307 SRID is in meters, right? The form is a parallelogram, although lat dimension is about 0.0001 grad or about 11 meters. All tips why is there an error?
  
  using Oracle Database 11 g Enterprise Edition Release 11.2.0.1.0 - 64 bit Production
  
  Published by: Slava2 on May 27, 2013 03:12

  These edges are not straight, curved (large circles / on the globe/ellipse). Your first edge is almost 2 times the length of the 3rd. In your case, this means that the first edge is less "straight" / more curved.
  The point on the first Board at longitude 0.19640 has latitude +-51.927445, which means that your 4th point is lower, causing the edges at the intersection (at the place described by Jum'a).

  You can quickly test it by drawing your polygon on Google Earth.

  Small note to Jum'a, tolerance is (effectively) in meters. However must be no smaller than 5 cm, or 0.05.

  Luke

• Update for the SRID geometry error

  I get "Ora-02309" Atomic breach zero on the updating of the SRID below.
  
  Update my_table C
  the value C.Geometry.SDO_SRID = 2958;
  
  It has value null/no SRID in geometry.
  
  Some people say "Begin your object before accessing", but I don't know how di it.
  
  Thank you
  Nancy.

  I think you have null geometries in your table

  SELECT count (*) from my_table
  where the geometry is zero

  If this is the case you can perform the following operations

  Update my_table C
  Set C.Geometry.SDO_SRID = 2958
  When the geometry is not null

  Luke

• sdo_geom.relate returns the MASK of the UNKNOWN: 000000001

  I have everything,
  I use on a database of Oracle 11 g Release 11.1.0.6.0 - 64 bit Production With the Real Application Clusters option.
  
  I have to determine what relationship there is between 2 sdo_geometry.
  I run this query:
  
  Select sdo_geom.relate (shape_1, "determine", shape_2, 0.5) determine,
  sdo_geom.relate (shape_1, 'anyinteract', shape_2, 0.5) anyinteract
  Double;
  
  I get:
  
  DETERMINE THE ANYINTERACT
  MASK UNKNOWN: 000000001 TRUE
  
  That means MASK UNKNOWN: 000000001 average?
  How can I determine the relationship?
  
  Thanks in advance.
  Samuel

  The second and third pairs ordered at the end are the same for the two geometry.
  shape_1:-66.89470555713654,10.514948048707884
  shape_2:-66.87824215820313,10.508391980537853

  remove the redundancy pts and see if that fixes the problem.

  Jack

• SDO_GEOM. Relate ("The INTERIOR", polygon, polygon)

  Hello

  I need to execute a query using a geometry table WKT, but it doesn't produce any result (0 rows returned)

  The query is as follows:

  SELECT... Of... WHERE...

  AND SDO_GEOM. RELATE (GEOGRAPHICAL_LOCATION, "ANYINTERACT", MDSYS. SDO_GEOMETRY (2003,8307, NULL, MDSYS. SDO_ELEM_INFO_ARRAY (1,1003,3), MDSYS. SDO_ORDINATE_ARRAY (33.0,36.0,37.0,41.0)), 0.05) = 'TRUE '.

  AND SDO_GEOM. RELATE (GEOGRAPHICAL_LOCATION, 'INSIDE', SDO_GEOMETRY ('POLYGON ((-90,180-180-90, 180 90, 90-180-180-90))', 8307), 0.05) = "INSIDE".

  AND ROWNUM < 500;

  If I remove 'INSIDE' query filter, it produces the results so I think that it is not a problem with the spatial index.

  So dig in I met the problem, there is an inconsistency (probably I'm wrong somewhere). The symptoms are given such as:

  1. try specified polygon is inside a box (World MBR [-180, 180] X [-90, 90])

  Select SDO_GEOM. RELATE)

  MDSYS. SDO_GEOMETRY (2003,8307, NULL, MDSYS. SDO_ELEM_INFO_ARRAY (1,1003,1), MDSYS. SDO_ORDINATE_ARRAY (36,26,45,26,45,38.5,36,38.5,36,26))

  , "INSIDE."

  MDSYS. SDO_GEOMETRY (2003,8307, NULL, MDSYS. SDO_ELEM_INFO_ARRAY (1,1003,3), MDSYS. SDO_ORDINATE_ARRAY(-180,-90,180,90))

  0.05) than double;

  happening 'INSIDE'

  2 try specified polygon is inside a polygon (World MBR [-180, 180] X [-90, 90])

  Select SDO_GEOM. RELATE)

  MDSYS. SDO_GEOMETRY (2003,8307, NULL, MDSYS. SDO_ELEM_INFO_ARRAY (1,1003,1), MDSYS. SDO_ORDINATE_ARRAY (36,26,45,26,45,38.5,36,38.5,36,26))

  , "INSIDE."

  MDSYS. SDO_GEOMETRY (2003,8307, NULL, MDSYS. SDO_ELEM_INFO_ARRAY (1,1003,1), MDSYS. SDO_ORDINATE_ARRAY(-180,-90,180,-90,180,90,-180,90,-180,-90))

  0.05) than double;

  which produces 'FALSE' (and 2nd points of the polygon is defined in order counterclockwise)

  3. try specified polygon is inside a polygon defined by WKT (World MBR [-180, 180] X [-90, 90])

  Select SDO_GEOM. RELATE)

  MDSYS. SDO_GEOMETRY (2003,8307, NULL, MDSYS. SDO_ELEM_INFO_ARRAY (1,1003,1), MDSYS. SDO_ORDINATE_ARRAY (36,26,45,26,45,38.5,36,38.5,36,26))

  , "INSIDE."

  SDO_GEOMETRY ('POLYGON ((-90,180-180-90, 180 90, 90-180-180-90))', 8307)

  0.05) than double;

  which produces 'FALSE' (and 2nd points of the polygon is defined in order counterclockwise).

  4. to be sure, I generated WKT using geometry in 1st round by SDO_UTIL package which is

  Select SDO_GEOM. RELATE)

  MDSYS. SDO_GEOMETRY (2003,8307, NULL, MDSYS. SDO_ELEM_INFO_ARRAY (1,1003,1), MDSYS. SDO_ORDINATE_ARRAY (36,26,45,26,45,38.5,36,38.5,36,26))

  , "INSIDE."

  SDO_GEOMETRY (SDO_UTIL.to_WKTGEOMETRY (MDSYS. SDO_GEOMETRY (2003,8307, NULL, MDSYS. SDO_ELEM_INFO_ARRAY (1,1003,3), MDSYS. SDO_ORDINATE_ARRAY(-180,-90,180,90))), 8307)

  0.05) than double;

  that always produces 'FALSE '.

  Could someone please help find what's not here.

  Thanks in advance.

  By the way; the oracle DB version is:

  Oracle Database 11 g Enterprise Edition Release 11.2.0.2.0 - 64 bit Production

  PL/SQL Release 11.2.0.2.0 - Production

  "CORE 11.2.0.2.0 Production."

  AMT for Linux: Version 11.2.0.2.0 - Production

  NLSRTL Version 11.2.0.2.0 - Production

  found the problem to: http://docs.oracle.com/cd/B28359_01/appdev.111/b28400/sdo_cs_concepts.htm#SPATL624

  who says:

  The following size limits apply, with geodetic data:

  • No polygon element can have a greater or equal to the half of the surface of the Earth.
  • Online, the distance between two adjacent coordinates cannot be greater or equal to half of the perimeter (a great circle) of the Earth.

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