| ... | ... | @@ -29,7 +29,7 @@ LOD1 and LOD2 are the most common level of details produced by users globally an |
|
|
|
To integrate different spatial datasets in a single CityGML document, a correct CRS is of utmost importance and a key requirement. CityGML inherits GML3’s spatial capabilities of handling Coordinate Reference Systems (CRS) which is the usual way of denoting the spatial reference in GML 3.1.1. It is strongly recommended that within CityGML:
|
|
|
|
- A CRS should be defined as three dimensional (horizontal*vertical CRS or a compound CRS),
|
|
|
|
- A CRS should not change through out the CityGML dataset,
|
|
|
|
- A CRS should be defined once within <gml:Envelope>. For example:
|
|
|
|
- A CRS should be defined once within the gml:Envelope. For example:
|
|
|
|
```plaintext
|
|
|
|
<gml:boundedBy>
|
|
|
|
<gml:Envelope srsDimension="3" srsName="urn:adv:crs:ETRS89_UTM32*DE_DHHN92_NH">
|
| ... | ... | |
