Solved

write multicurve/multisurface into GPKG error

viviancfhung
Rank
Badge +1

There are GML/FGDB dataset with "round conner polygon" or multilines geometry which is mixed "curve and lines". It can't be written into GPKG file.

src dataset geometry

image.pngThe output geometry is IFMENull

How can fix it?

icon

Best answer by david_r 30 June 2022, 13:15

View original

14 replies

david_r
Rank
Userlevel 4

It depends on a few factors, but it should be possible. First make sure to use a generic geometry field on the writer. If you're writing to an existing geopackage with a specific geometry type that excludes arcs, you can insert an ArcStroker just before the writer.

You might also want to try using a GeometryRefiner and possibly also a GeometryValidator (OGC checks) to make sure all geometries are valid.

viviancfhung
Rank
Badge +1

Thanks, I will try

viviancfhung
Rank
Badge +1

After GeometryRefiner, we have point, line , polygon, arc, ellipse, surface ...

I use MULTICURVE to map arc, but

What's Geometry type in GPKG can map ellipse?

What's Geometry type in GPKG for surface?

viviancfhung
Rank
Badge +1

I try to use GeometryValidator (OGC checks), It classify all my MULTICURVE geometries or mixture of MULTILINESTRING and MULTICURVE geometries as failed.

Then how can I fix it

david_r
Rank
Userlevel 4

After GeometryRefiner, we have point, line , polygon, arc, ellipse, surface ...

I use MULTICURVE to map arc, but

What's Geometry type in GPKG can map ellipse?

What's Geometry type in GPKG for surface?

Ellipses and surfaces aren't supported in a GeoPackage, see https://docs.safe.com/fme/html/FME_Desktop_Documentation/FME_ReadersWriters/ogcgeopackage/quick_facts_ogcgeopackage.htm

david_r
Rank
Userlevel 4

I try to use GeometryValidator (OGC checks), It classify all my MULTICURVE geometries or mixture of MULTILINESTRING and MULTICURVE geometries as failed.

Then how can I fix it

Did you try using a generic geometry column in the GeoPackage table? That should work.

viviancfhung
Rank
Badge +1

Ellipses and surfaces aren't supported in a GeoPackage, see https://docs.safe.com/fme/html/FME_Desktop_Documentation/FME_ReadersWriters/ogcgeopackage/quick_facts_ogcgeopackage.htm

Thanks

viviancfhung
Rank
Badge +1

Did you try using a generic geometry column in the GeoPackage table? That should work.

I will try, thanks

viviancfhung
Rank
Badge +1

Did you try using a generic geometry column in the GeoPackage table? That should work.

I'm so new for FME. How can I set generic geometry column? Thanks

david_r
Rank
Userlevel 4

Did you try using a generic geometry column in the GeoPackage table? That should work.

Try this:

image

viviancfhung
Rank
Badge +1

Did you try using a generic geometry column in the GeoPackage table? That should work.

Thanks, I will try

viviancfhung
Rank
Badge +1

Did you try using a generic geometry column in the GeoPackage table? That should work.

  1. Is any way can we convert curve into line. convert round polygon into polygon
  2. our FGDB dataset use MULTISURFACE to define round polygon. Can it be translated to GPKG accurately
david_r
Rank
Userlevel 4

Did you try using a generic geometry column in the GeoPackage table? That should work.

  1. You can use an ArcStroker to convert all the arcs to polyline segments. Sometimes you may also want to add a GeometryRefiner after.
  2. I'm not sure I understand what you mean by "round polygon"... Do you mean an ellipse?
viviancfhung
Rank
Badge +1

Did you try using a generic geometry column in the GeoPackage table? That should work.

Thanks for your help, this setting solve some of my problems. But Now I got this error when use the setting to convert dataset

image...

imageOur geometry Data is this

imagewhat's Non-Cirular Arc.

Is this

image 

Reply


Community Stats

28,694
Posts
109,434
Replies
36,544
Members
Terms & ConditionsCookie settings
A product of
Safe Software respectfully acknowledges that we live, learn and work on the traditional and unceded territories of the Kwantlen, Katzie, and Semiahmoo First Nations.