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Shape file settings

Figure 5.12: Shape file settings

Shape files can contain 2D or 3D coordinates in their *.shp/*.shx files. Metria CityModeler saves 3D polygons.

The system for the output and possibly input coordinates also need to be specified.

Figure 5.13: Input coordinate system

If a new Shape file has been selected in the output file page, then the Input coordinate system radio box will be disabled.

If an existing Shape file is selected, you need to define if the coordinates in the file are defined in the Universal Transveral Mercator (UTM) system or the World Geodetic System (WGS-84). For UTM, you must also define the UTM zone.

Definition of output coordinate system
Enabling comments on objects
Building Base Height


Definition of output coordinate system

Figure 5.14: Output coordinate system

Metria CityModeler can save measured objects in either the Universal Transveral Mercator (UTM) system or the World Geodetic System (WGS-84). Just select the desired output system.

Metria CityModeler transforms existing objects to the selected output system if it differs from the input system. The transformation takes place when the wizard is finished. It is an exception from the rule that only meta data are loaded in the wizard, since all the objects need to be read and rewritten. Thus, you would need to close the project and reopen it if you want to contiue view and edit the project after a change in the ouput coordinate system.

The UTM zone is automatically filled in from known information, but can be changed if it is known to be incorrect.


Enabling comments on objects

By checking the check box Create "COMMENT" attribute you create a free text attribute named "COMMENT". You can enter a descriptive text of up to 48 characters for each object, see more here. If checked and the attribute does not already exist, it will be added to the Shape file and enable editing. If the attribute exists already, checking the check box will enable editing of the attribute, which would otherwise be locked for editing.

The comments will also be displayed in Google Earth.


Building Base Height

If Include building base is checked, each measured polygon will be duplicated and both the top and the bottom of the building will be estimated automatically. If unchecked, only the top of the building is created. The exported 3D Shape file will in addition to the top and bottom polygons also show the height as an attribute in the DBF file.