KML 2.2 provides the option to store attribute data in individual placemarks using either <Data> or <SchemaData> elements. For background, please read: http://code.google.com/apis/kml/documentation/extendeddata.html.
The key distinction between Data, and SchemaData is that SchemaData elements are associated with formal schema definitions in <Schema> elements.
The following element attributes are used by the KML reader and writer to read/write KML 2.2 extended data.
The KML reader and writer use a set of kml_data and kml_schema_data structured list attributes to read/write extended data.
|
KML Element Attribute |
KML Element |
|
kml_data{}.name |
name attribute of <Data> |
|
kml_data{}.value |
<Data><value> |
|
kml_data{}.display_name |
<Data><displayName> Optional. Note: xml entities will be encoded on writing. |
|
kml_data{}.display_name_raw_text |
<Data><displayName> Optional. Note: Display_name values will written as raw text, i.e., xml entities will not be encoded. CDATA blocks should be added as necessary. |
|
kml_schema_url |
schemaUrl attribute of <SchemaData> |
|
kml_schema_data{}.name |
name attribute of <SimpleData> |
|
kml_schema_data{}.value |
Value of <SimpleData> |