The WIP catalog is intended to leverage the available opportunities
with web hosted files (FTP, s3, etc),
OpenDAP servers, and STAC catalogs.
Data that is dealt with is limited to 2 or 3D information presented on a rectilinear grid.
| Purpose | Name | Description | Example VRT | Example OpenDap | Example STAC |
|---|---|---|---|---|---|
| Data | collection | The primary resource name, agency, or catalog of data assets | 3DEP | GridMET | STAC Collection |
| Data | asset | The subdatasets or assets in the collection. The ID should be unique within the collection that contains the asset. | 30m DEM | OpenDAP endpoint | STAC asset |
| Data | URL | The specific access URL | /vsicurl/... |
https://... |
STAC href |
| Data | type | The data format reached by URL | vrt | dap | stac_asset |
| Data | varname | The filename (sans extension), band name, or dap varname | filename or band name | varname | ? |
| Data | variable | General high order variable type | Land cover | Rainfall | Imagery |
| Data | description | Long form description of asset | User defined | NetCDF long name | STAC Title |
| Data | units | The units of the values in the asset | “m” | “mm” | “wl” |
| Modeled Data | model | The name of the model generating data in asset | NA | “CCSM4” | “CCSM4” |
| Modeled Data | ensemble | The model ensemble member used to generate data in asset | |||
| Modeled Data | scenario | The model scenario used to generate data in asset | |||
| Temporal Data | duration | The range of time covered by the asset represented as {start}/{end},
open dates are represented with .. |
production date or NA | OpenDap time dimension values | STAC datetime |
| Temporal Data | interval | A numeric stride with a unit, built as a string | NA | “1 day” | STAC … |
| Temporal Data | T_name | The name of the time dimension | |||
| Temporal Data | nT | The number of time layers in the model | 1 | 30 | |
| Spatial Data | X1 | The first value in the X coordinate array, typically, but not always
Xmin |
STAC bbox element 1 | ||
| Spatial Data | Xn | The last value in the X coordinate array,
typically, but not always Xmax |
STAC bbox element 2 | ||
| Spatial Data | Y1 | The first value in the Y coordinate array, typically,
but not always Ymin |
STAC bbox element 3 | ||
| Spatial Data | Yn | The last value in the Y coordinate array, typically,
but not always Ymin |
STAC bbox element 4 | ||
| Spatial Data | X_name | The name of the X dimension/variable |
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| Spatial Data | Y_name | The name of the Y dimension/variable |
|||
| Spatial Data | X_res | The resolution of the data in the X direction
(abs(X1-Xn) / ncol) |
|||
| Spatial Data | Y_res | The resolution of the data in the Y direction
(abs(Y1-Yn) / nrow) |
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| Spatial Data | ncol | The number of values in the X direction
(abs(X1-Xn) / X_res) |
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| Spatial Data | nrow | The number of grid cells in the Y direction
(abs(Y1-Yn) / Y_res) |
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| Spatial Data | crs | The coordinate reference system expressed as PROJ4 string | |||
| Spatial Data | toptobottom | Specific to OpenDap data describing the arrangement of the unfolded vector | |||
| Spatial Data | tiled | is data tiled spatially (XY), temporally (T), or not (NA) |