Geomark Attributes
The following table describes the attributes of a geomark returned from the geomark info resource.
| Label | Attribute(s) | Description | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID | id |
The geomark ID (e.g gm-abcdefghijklmnopqrstuvwxyz0000bc). | ||||||||||||||
| URL | url |
The geomark URL. (e.g https://apps.gov.bc.ca/pub/geomark/geomarks/gm-abcdefghijklmnopqrstuvwxyz0000bc) | ||||||||||||||
| Geometry Type | geometryType |
The type of geometry (e.g. Polygon, Point, LineString, MultPolygon, MultiLineString, or MultiPoint). | ||||||||||||||
| Geometry Count | numParts |
The number of parts to the geomark's geometry. | ||||||||||||||
| Creation Date | createDate |
The date (YYYY-MM-DD) the geomark was created (e.g 2010-09-30). | ||||||||||||||
| Expiry Date | expiryDate |
The date (YYYY-MM-DD) the geomark expires or empty if the geomark is registered with a BC Government application and will be kept as long as it remains registered. (e.g. 2010-12-31). | ||||||||||||||
| Bounding Box (W,S,E,N) | minX, minY, maxX, maxY |
The bounding box of the geometry in lat, lon coordinates. | ||||||||||||||
| Centroid (lat, lon) | centroidX, centroidY |
The lat, lon coordinates of the centroid of the geomark's geometry. | ||||||||||||||
| Vertex Count | numVertices |
The total number of vertices of the geomark's geometries. | ||||||||||||||
| Length | length |
The total length in metres (m) of the geomark's geometries. | ||||||||||||||
| Area | area |
The total area in square metres (m2) or on the HTML form hectares (ha) of the geomark's geometries. | ||||||||||||||
| Is Geometry Valid | isValid |
Boolean flag indicating if the Geometry is valid acording to the OGC Simple Features specification. | ||||||||||||||
| Is Geometry Simple | isSimple |
Boolean flag indicating if the Geometry is simple acording to the OGC Simple Features specification. | ||||||||||||||
| Is Geometry Robust | isRobust |
Boolean flag indicating if the minimum clearance of the geometry is >= 1 m. | ||||||||||||||
| Minimum Clearance | minimumClearance |
The minimum clearance defines the distance in metres that all points of the geometry could be moved and the geometry still be valid. | ||||||||||||||
| View in (Google Maps) | googleMapsUrl |
The URL to display the geomark on a Google Map. (e.g https://apps.gov.bc.ca/pub/geomark/geomarks/gm-abcdefghijklmnopqrstuvwxyz0000bc/parts.kml). | ||||||||||||||
| View in (Google Earth) | googleEarthUrl |
The URL to download and display the geomark in Google Earth. (e.g. |
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| Resource Links | resourceLinks |
The resource links are included in the geomark info xml and json formats and contains one link for each of the different representations of the geomark info and geomark download pages. Each link includes the following fields.
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Download Geomark Resources
The table below shows the supported download geomark resource names. Click the resource name to view a sample of that type.
| Resource Name | Feature Type | Description |
|---|---|---|
| parts | GeomarkPart | One or more GeomarkPart feature records, each with all the attributes and the Polygon, LineString, or Point geometry for that part. The min|max(x|y), centroid(x|y), numVertices, and area attributes are calculated for that part's geometry. The id will be prefixed with '#<partIndex> of '. |
| feature | Geomark | A single Geomark feature record with all the attributes except partIndex and a Polygon, LineString, Point, MultiPolygon, MultiLineString, or MultiPoint geometry. |
| point | GeomarkPoint | A single GeomarkPoint feature record with the id and url attributes and a point geometry. The point is the centroid, or another random point which is inside the geomark's geometry boundary. The centroid is calculated after converting the geometry to the requested coordinate system. |
| boundingBox | GeomarkBoundingBox | A single GeomarkBoundingBox feature record with the id and url and a polygon geometry. The polygon represents the bounding box of the geomark's geometry parts. It has a vertex at each corner of the bounding box of the geomark's geometry geometries. The bounding box is calculated after converting the geometry to the requested coordinate system. |