ddi_geoBndBox {rddi}

geoBndBox and its child nodes

Description

The fundamental geometric description for any dataset that models geography. geoBndBox is the minimum box, defined by west and east longitudes and north and south latitudes, that includes the largest geographic extent of the dataset's geographic coverage. This element is used in the first pass of a coordinate-based search. If the boundPoly element is included, then the geoBndBox element MUST be included. More information on these elements, especially their allowed attributes, can be found in the references.

Usage

ddi_geoBndBox(...)

ddi_eastBL(...)

ddi_northBL(...)

ddi_southBL(...)

ddi_westBL(...)

Arguments

...

Child nodes or attributes.

Details

Parent nodes

geoBndBox is contained in sumDscr.

geoBndBox specific child nodes

• ddi_eastBL() is the easternmost coordinate delimiting the geographic extent of the dataset. A valid range of values, expressed in decimal degrees (positive east and positive north), is: -180,0 <= East Bounding Longitude Value <= 180,0.

• ddi_northBL() is the northernmost coordinate delimiting the geographic extent of the dataset. A valid range of values, expressed in decimal degrees (positive east and positive north), is: -90,0 <= North Bounding Latitude Value <= 90,0 ; North Bounding Latitude Value >= South Bounding Latitude Value.

• ddi_southBL() is the southernmost coordinate delimiting the geographic extent of the dataset. A valid range of values, expressed in decimal degrees (positive east and positive north), is: -90,0 <=South Bounding Latitude Value <= 90,0 ; South Bounding Latitude Value <= North Bounding Latitude Value.

• ddi_westBL() is the westernmost coordinate delimiting the geographic extent of the dataset. A valid range of values, expressed in decimal degrees (positive east and positive north), is: -180,0 <=West Bounding Longitude Value <= 180,0.

Value

A ddi_node object.

References

geoBndBox documentation

eastBL documentation

northBL documentation

southBL documentation

westBL documentation

Examples

ddi_geoBndBox()

# Functions that need to be wrapped in ddi_geoBndBox()

ddi_eastBL("90")

ddi_northBL("17")

ddi_southBL("45")

ddi_westBL("-10")