Basemap

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Fig. 17 Basemap actor.

Description

As the name says, the base map actor draws a base map into a scene.

  • Map data can be read from an arbitrary geo-referenced GeoTIFF file (in the above image data from Natural Earth is used. Other GeoTIFF datasets can be used as well).

  • The bounding box can be customised, i.e. the map file can be larger than the displayed region.

  • Colour saturation of the loaded base map image can be adjusted (for example, to desaturate the image colours).

Loading a map

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  • Open Base map → actor properties

  • Under the tab load map click on execute. A file browser opens and you can choose an arbitrary GeoTIFF file from your file system.

Adjusting map projection

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  • Open Base map → actor properties → map projection support

  • You can choose between three different projection types: cylindrical, rotated lat.-lon. and proj.org projection

  • Choose the projection according to your needs. For rotated lat.-lon. projection you may need to adjust the rotated north pole option, the coordinates of the rotated North Pole.