Hi,
I've noticed an issue/difference when calculating the length of a line string in spatial, I'm using geodetic coordinates (srid 8307). The length is different to that calculated by ArcGIS, FME, PostGIS and if I transform the data to a grid based system and use a bit of pythagoras in Excel. The 4 methods mentioned all give the same answer to within a few cm, whereas Oracle is off by 2 metres (this is for a line that is 725m long). This is a little worrying as the LRS package seems to use the same method and gets the same results, this is fine if I can back it up and replicate in the other systems - but if not then this causes a big big issue. Would someone please be able to advise on whether the Oracle results can be replicated in other systems?
Thanks