Re: [Qgis-developer] Interpretation of a 3 point CircularString with p0 == p2 (circle)

2016-06-23 Thread Even Rouault
Le jeudi 23 juin 2016 16:01:10, Marco Hugentobler a écrit : > Hi Even > > I agree it will be good to follow the postgres / gdal interpretation. > Reading S2, I somehow thought the segment midpoint would be the circle > midpoint, but it's not the same. Filed as https://hub.qgis.org/issues/15116

Re: [Qgis-developer] Interpretation of a 3 point CircularString with p0 == p2 (circle)

2016-06-23 Thread Marco Hugentobler
Hi Even I agree it will be good to follow the postgres / gdal interpretation. Reading S2, I somehow thought the segment midpoint would be the circle midpoint, but it's not the same. Regards, Marco On 06/23/16 15:32, Even Rouault wrote: Hi, I just came into a difference how QGIS and GDAL

Re: [Qgis-developer] Interpretation of a 3 point CircularString with p0 == p2 (circle)

2016-06-23 Thread G. Allegri
Hi Even, this difference catched my eye too. I think SQL MM (and consequently GDAL and PostGIS) interpration is more logical, and I would suggest QGIS should follow it too. Giovanni 2016-06-23 15:32 GMT+02:00 Even Rouault : > Hi, > > I just came into a difference how

[Qgis-developer] Interpretation of a 3 point CircularString with p0 == p2 (circle)

2016-06-23 Thread Even Rouault
Hi, I just came into a difference how QGIS and GDAL interpret a CircularString made of a 3 points p0, p1, p2 where p0 == p2, which is a way of representing a full circle. GDAL interprets p1 as the symetrical point of p0 with respect to the center