Overlapping polygon and how to determine the points

Question

I have a larger footprint polygon/table called A and a sub-polygon/table called B.
I need to identify which is polygon A and which is polygon B because they overlap with each other.
And I need to identify all the point that falls within A and B.
which means A = A and B = A+B and the other points that do notfall within A and B will be null.
How do I start this assignment?
I was thinking
alter table A
add  (ID varchar( 50 BYTE)) ;
update A
set ID = 'larger';
--TO do a point in Polygon
PROCEDURE point_polyA
IS
     proc_name varchar2(50);
BEGIN
     proc_name := 'point_polyA';
     add_log(proc_name,'Start processingpolyA');
     COMMIT;
     FOR x IN (SELECT id, geoloc
                   FROM A)
     LOOP     
          FOR y IN (SELECT a.*
                        FROM point
                       WHERE sdo_filter (A.geoloc, x.geoloc) = 'TRUE')
          LOOP               
               IF sdo_geom.relate(y.geoloc, 'ANYINTERACT', x.geoloc, 5) = 'TRUE' THEN
                    INSERT INTO point_polyA ( id)
                         VALUES ( x.id);
               END IF;          
          END LOOP;
          COMMIT;
     END LOOP;
     add_log(proc_name,'Finish!');
     COMMIT;
     EXCEPTION
             WHEN OTHERS THEN
                add_log(proc_name, substr(SQLCODE||' '||SQLERRM, 1, 199));
     COMMIT;Do the same for B then
select ID
from A,B
where sdo_relate(A.geoloc,B.geoloc,'mask = contains') = 'TRUE';Message was edited by:
CrackerJack

Answer 1

Hi,
this
rownum<2
making sure that only the one clicked polygon is rendered/displayed
(pls see the [image of the screen |http://bp0.blogger.com/_8PXbvmaOB6M/SEe0rNCz4nI/AAAAAAAAAWo/lOHcLjbIz-U/s1600-h/verschneiden_snap3.png] )
i.e. you click on the polygon of the area (county) and get the FOI as per Parameter 1 (which are the records/FOI contained in the first table "DEKUNDEN" = customers)
in ur above code you will need to say:
(b.geoloc, :1)
recommend to firstly try to achieve a result with the delivered MVDEMO data.
Then the SQL of the theme will look as follows:
select a.location, a.name,
a.city, a.sales from customers a where sdo_relate(a.location, (select
geom from counties b where sdo_contains(b.geom, :1)='TRUE' and
rownum&lt;2), 'mask=ANYINTERACT')='TRUE'
re) attributes for both points and polygon
--> for the points (customer table/theme) usually you get an Infowindow automatically for the theme "customers" for the "Info columns" you have defined in the ADVANCED Tab of the theme in the Mapbuilder.
--> for the polygon you'll have to assign an info window on "mouse_right_cklick" as the "mouse-click" (left) has already been used for selelcting the polygon.
and lastly I am not dealing with a webservice - just 2 tables: "customers" (with the POI - points) and "counties" (the polygon - area) from the MVDEMO example data.
Hope that helped and I did not make more complicated - sorry - but it is quite complex (;-).
Bernhard
Edited by: BernhardFW on Aug 25, 2008 1:30 PM