Tell me more ×
Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It's 100% free, no registration required.
up vote 0 down vote favorite

Does anyone know how the SDO_WITHIN_DISTANCE works with featureclasses that are unprojected i.e. just Geographic WGS 84 systems. As I don't see how the km/miles units can work unless it does an on the fly calculation to calculate the degree distance to km/miles.

This is born from trying to use ST_DISTANCE (ESRI way) to calculate distance between two features and there is no way to specify measurement units, it just gives you back a degree distance, which is fair enough.

Further to this - does anyone know of a spatial function comparison matrix - so you can see the equivalent function of what the Oracle command is versus the command using ST_GEOMETRY? I think that would be very useful.

Thanks.

share|improve this question
See Linear Referencing System [LRS] for Oracle Spatial for calculating measurements - docs.oracle.com/html/A88805_01/sdo_lrsa.htm – Mapperz♦ Mar 13 at 14:47

Know someone who can answer? Share a link to this question via email, Google+, Twitter, or Facebook.

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.