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Oracle Spatial User's Guide and Reference - InfoLab

Oracle Spatial User's Guide and Reference - InfoLab

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SDO_LRS.CONVERT_TO_LRS_LAYER<br />

Parameters<br />

Usage Notes<br />

table_name<br />

Table containing the column with the SDO_GEOMETRY objects.<br />

column_name<br />

Column in table_name containing the SDO_GEOMETRY objects.<br />

dim_name<br />

Name of the measure dimension. If this parameter is null, M is assumed.<br />

dim_pos<br />

Position of the measure dimension within the SDO_DIM_ARRAY structure for the<br />

specified SDO_GEOMETRY column. If this parameter is null, the number<br />

corresponding to the last position is assumed.<br />

lower_bound<br />

Lower bound (SDO_LB value in the SDO_DIM_ELEMENT definition) of the<br />

ordinate in the measure dimension.<br />

upper_bound<br />

Upper bound (SDO_UB value in the SDO_DIM_ELEMENT definition) of the<br />

ordinate in the measure dimension.<br />

tolerance<br />

Tolerance value (see Section 1.5.5 <strong>and</strong> Section 7.6).<br />

This function returns TRUE if the conversion was successful or if the layer already<br />

contains measure information, <strong>and</strong> the function returns an exception if the<br />

conversion was not successful.<br />

An exception is raised if the existing dimensional information for the table is<br />

invalid.<br />

The measure values are assigned based on a start measure of zero <strong>and</strong> an end<br />

measure of the cartographic length.<br />

If a spatial index already exists on column_name, you must delete (drop) the index<br />

before converting the layer <strong>and</strong> create a new index after converting the layer. For<br />

information about deleting <strong>and</strong> creating indexes, see the DROP INDEX <strong>and</strong><br />

CREATE INDEX statements in Chapter 10.<br />

16-20 <strong>Oracle</strong> <strong>Spatial</strong> User’s <strong>Guide</strong> <strong>and</strong> <strong>Reference</strong>

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