(This functionality is available with the Input / Output module)
KML is a file format used to display geographic data in an Earth browser such as Google Earth, Google Maps, and Google Maps for mobile. KML uses a tag-based structure with nested elements and attributes and is based on the XML standard.
This function exports data to a Google KML file from an LISCAD SEE file that is on a projection. If the LISCAD file is not on a WGS 84 projection, you need to use an appropraite transformation.
If the required transformation to WGS 84 from your projection is not available in the Export dialog Transformation list, first use Configure/Projections/Manage Transformations to create the required transfortmation.
Note that there is a limit of 50000 placemarks as maximum for a KML export. An error message will be shown when the placemark count exceeds the limit and the KML file is not created. If the SEE project contains too many objects, you may use a block to limit the data exported.
Refer also to the Export dialog box topic.
The following features are exported.
| LISCAD | Map to KML |
| Points | Point placemarks |
| Lines, arcs, splines | Line placemarks (Note you can control how closely the resulting line string will approximate the original arcs and splines via the "Maximum Segments Distance" fields in the options.) |
| Polygons | Polygon placemarks |
| Photos associated with Points | Icons in the point placemarks |
OPTIONS
| Item | User To |
| Export Attached Images | Select whether images are to be exported |
| Image width | Enter the width of the images to be exported |
| Maximum Segment Distances | Control how closely the resulting line string will approximate the original arcs and splines by entering an arc to chord offset and spline segment length |
NOTE:
Only the objects which are on displayed groups will be exported.
The following LISCAD attributes are exported to the KML file and shown in the balloon associated with each entity in the KML file:
Point: ID, DESCRITPTION, CODE, GROUP, LONGITUDE, LATITUDE, ALTITUDE, PHOTO
Line: ID, DESCRITPTION, CODE, GROUP, TYPE, LENGTH
Polygon: ID, DESCRITPTION, CODE, GROUP, AREA, PERIMETER.
If photos are associated with a point, then the first photo in the list is shown as the icon for the point. All the photos associated with the point will be shown in the balloon associated with the point.