The invalid-data tag has no wiki summary.
3
votes
1answer
145 views
Possible solution for dangling nodes?
I was just asked in a interview what a dangling nodes was. I had no idea and asked a former co-worker.
I was informed that a significant amount of time was spent fixing these. I was confused how ...
4
votes
2answers
422 views
Why are self-intersecting polygons bad?
Working with both ArcGIS and Oracle Spatial, a self-intersecting polygon renders a geometry invalid. Why are self-intersecting polygons a problem?
2
votes
2answers
187 views
ArcSDE: Specifying fields to not allow null values
I have a feature class in SDE that has various fields where the setting AllowNulls is set to FALSE.
When creating a feature in ArcMap in this feature class it still allows nulls to be specified in ...
3
votes
1answer
85 views
Help obtaining nodata information for ASTER datasets
Is there any way to determine what the nodata value should be, in a set of geotiff images that do not have the 42113 tiff tag ? I am trying to get elevation information, programatically in c++, and I ...
2
votes
2answers
178 views
How to implement field validation rules in ArcGis?
Not digging in deep, I've found that ArcGis offers validation of 2 basic constraints: field data type and if the value is required or not. Is there any way or AddIn to attach more complex validation ...
2
votes
1answer
249 views
validate SDE features within arcObjects (cant use sdeLayer)
I'm trying to sweep through a feature class checking for invalid features (and log the invalid features).
Would IValidation.Validate work or does that just check for rules?
If not I'm guessing I ...
3
votes
4answers
1k views
Is there any place in which I can find a list of invalid database characters for ArcGIS 10?
Relating to my question about the split tool here, as suggested I ask a new question: is there any place with a list of invalid characters to use in a database in ArcGIS 10?
edit: It is in relation ...
9
votes
3answers
287 views
Invalid geometry zoo
Many a time and oft I've spent hours struggling with bizarre bugs resulting from invalid geometries. The symptoms vary greatly, including:
Database slowdowns
Incorrect\Null query results
Log files ...
2
votes
3answers
392 views
Why is this polygon “self intersected” and invalid?
I have a polygon defined as follows:
segment from 43:29:02 N 003:50:39 E to 43:34:12 N 003:43:04 E
arc(CW): center (43:34:49 N 003:58:16 E) from 43:34:12 N 003:43:04 E to 43:45:45 N 003:59:56 E
...
8
votes
2answers
628 views
What are the implications of invalid geometries
I've imported some data in a Postgis database and some of the geometries are reported invalid (ST_IsValidReason reports self-intersection or ring self-intersection).
The queries I am performing don't ...
