Interactive publication
Back to the catalogueData qualityCase 08 of 14
Missing CRS declaration
A geometry file with no CRS metadata forces an assumption (usually WGS84); if the true CRS differs, every downstream cell assignment is wrong with no detection signal.
Class
Case to account for
Affects
3 conversions
01
Detection
File/feature lacks a .prj, CRS property, or EPSG code; only inferable from coordinate magnitude sanity checks.
02
Mitigation
01
Reject files without an explicit CRS at ingest
02
Sanity-check coordinate range against the assumed CRS's expected bounds before proceeding
03
Affected conversions
PolygonH3 (intersects)
OPENPointH3
OPENRasterH3
OPENMore in Data quality
Accuracy-radius attritionAxis-order reversal (lat/lng swap)Coastal / mixed pixelsConfidence-convention mismatchDuplicated region IDsGeocoding uncertaintyIncomplete geometryMissing polygonsRaster no-data valuesRaster/cell resolution mismatchRounded / truncated coordinatesWrong CRS assumedZero-island coordinates