Opened 12 years ago
Closed 12 years ago
#4511 closed defect (fixed)
OGR throws error when trying to convert empty KML
| Reported by: | alexbruy | Owned by: | warmerdam |
|---|---|---|---|
| Priority: | normal | Milestone: | 1.10.0 |
| Component: | default | Version: | 1.9.0 |
| Severity: | normal | Keywords: | kml |
| Cc: |
Description
OGR can't show info, open or convert empty KML files (see attachment). The error is
ERROR 4: No layers in KML file: empty.kml. FAILURE: Unable to open datasource `empty.kml' with the following drivers
But it works with empty shapefiles. This bug makes impossible adding empty KML files to QGIS for editing. Tested with OGR 1.8.1 and 1.9.0
Attachments (1)
Change History (4)
by , 12 years ago
comment:1 by , 12 years ago
I'm afraid I don't understand the point in opening empty KML files in QGIS. The KML driver doesn't support editing (SetFeature()). It only supports appending features to a brand new KML file. So the point in opening empty KML files in QGIS seems to be moot.
comment:2 by , 12 years ago
Totally agree that this is a minor issue.
Users do, however, receive 'valid' KML files which are occasionally empty - which can be for good reason, e.g. automated download of KML from sensors. In QGIS they currently receive a file 'is not a valid or recognized data source' message. They then choose other (proprietary) products to check that this is not a problem with QGIS and verify that the files do not indeed contain any data.
Unfortunately such activity attracts negative comments and so any (hopefully minor) workaround would be great.
comment:3 by , 12 years ago
| Milestone: | → 2.0.0 |
|---|---|
| Resolution: | → fixed |
| Status: | new → closed |
r23978 /trunk/ (12 files in 3 dirs): KML (old driver): report empty layers when there is only empty layers; don't error out on empty document (#4511)
QGIS now accepts the attached empty.kml. But I'd note that QGIS refuses to open a OGR datasource without any layer in it (but this is a QGIS "defect")
Sample emtpy file