Concept
Alternate Profiles
Different views and formats:
Alternate Profiles ?Profiles (alternative information views) encoded in various Media Types (HTML, text, RDF, JSON etc.) are available for this resource.
- Preferred Labelskos:prefLabel
OGC GeoPackage Extension for Tiled Gridded Coverage Data
- URI
- http://www.opengis.net/def/docs/17-066r2 ↗Go to the persistent identifier link
- Within Vocab
- OGC Documents
| Definitionskos:definition | The GeoPackage Extension for Tiled Gridded Coverage Data” (TGCE) extension (previously titled Elevation Extension) defines how to encode and store tiled regular gridded data, such as a digital elevation model, in a GeoPackage. The tiles contain values, such as elevation, temperature or pressure, and the extension defines two encodings. The PNG encoding uses PNG files to store 16-bit integer values and a scale and offset may be applied to fine-tune the coverage range. To support 32-bit floating point data or binary data, the extension also defines a TIFF encoding. In this encoding, TIFF files are used to store IEEE floating point or a binary data type where the SampleFormat has a value of either 1 (unsigned integer) or 2 (signed integer) AND the BitsPerSample is either 8, 16, or 32. To simplify development, this encoding constrains many of the TIFF options to the minimal set needed to meet the floating-point requirement. The extension also defines two ancillary data tables: one for regular gridded coverages and one for tiles. |
|---|---|
| Broaderbroader | Implementation Standard |
| http://purl.org/dc/terms/createdcreated | 2022-05-02 |
| Creatorcreator | Carl Reed |
| seeAlsoseeAlso | https://docs.ogc.org/is/17-066r2/17-066r2.html |
| Status of item in register or collectionstatus | valid |
| Notationnotation | 17-066r2 |
| Alternative LabelaltLabel | OGC GeoPackage Extension for Tiled Gridded Coverage Data |
| 17-066r2 | |
| OGC document typedoctype | Implementation Standard |