Urgent - Please help me on Linera Refrencing System-LRS

Question

Oracle Spatial - Linear Referencing System (LRS)question
We are building a Highway Database management system and would like to implement Oracle Spatial- Linear Refrencing System-LRS . I have found some example at http://technet.oracle.com/docs/products/oracle8i/doc_library/817_doc/inter.817/a85337/sdo_lrsa.htm#884429 . In this example Oracle has used coordinats ie x and y . I know that major advantage of using LRS is its capability of locating attributes and events along a linear feature with only one parameter (usually known as measure) instead of two (such as latitude/longitude or x/y in Cartesian space). How can I use one parameter and in my case it is MEASURE (mile point) like 10, 20, 40, etc to build my route geometry in this situation. I tried to do following in my route table but when I tried to validate the route , it gave me error- FALSE.
Here is my insert statement in route table lrs_routes with column route_id, route_name and route_geometry of the type MDSYS.SDO_GEOMETRY.
INSERT INTO lrs_routes VALUES(
3,
'Route-3',
MDSYS.SDO_GEOMETRY(
3001,
NULL,
NULL,
MDSYS.SDO_ELEM_INFO_ARRAY(1,2,1),
MDSYS.SDO_ORDINATE_ARRAY(
0,
1.57,
1.62,
2.7,
7.5,
8.9,
53.6,
55.4,
57.6,
60.2,
70.99,
71.54,
73.97,
77.21,
83.56,
89.59,
91.29
I will appreciate your input.
Thank you.
Syed

Answer 1

Dave,
I am using 8i - 8.17. Thanks for the update. One more question I would like to ask, do you have any background of designing a spatial Database? I am responsible to design our Route System using LRS and as you know each route at one mile point may have several featuers such as 'payment Type', 'Payment width', 'Median type', 'Posted Speed limit' etc . One mile point may have upto 90 features in my case. I am planning to create two tables one to hold just route name, route type and the geometry , something similar to following
s_routes tables
(route_id number,
route_name varchar2(40),
route_type varchar2(5), -- HiGHWAY or LOCAL
route_geometry MDSYS.SDO_GEOMETRY)
second table will hold all the features of the route
s_route_features
(route_id number, - -Foreigh key from s_routes
rf_id number, -- route feature id , primary key concate with route_id
attribute_name varchar2(50), -- Payment type, median width etc
begin_milepoint number,
end_milepoint number,
utm_x number,
utm_y number
I am storing my route geometry in the first table and all the featuers/attributes in the second table.
Second table can hold upto 5000 records for one route only , because for each milepoint there can be several route attributes and theer can be several begin mile point
My question is , lets say the length of a route is 180 miles and I want to divide this route into two at some point say at 75 , so how can I divide one route into two routes and at the same time I would like to divide my route features in the s_route_features . In other words route one will hold feature upto 75 miles and second route will hold features starting from 76 to 180 miles and the length of the second route will be 105 ( 180 minus 75) .
Let me know if it make sence to you.
Thanks
Syed
Syed