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katewilmut
06-01-2009, 09:08 AM
I am currently collecting data from a flock of birds. I have sucessfully written a Vizard programme which allows me to write streamed position and angle data into an excel spreadsheet.

However, if I use the software which accompanied the flock of birds (either BBIRD or CBIRD) i get very different data than when I use the Vizard programme.

Has anyone else experienced this and know the cause of it?

Many thanks

Kate

Jeff
06-03-2009, 11:34 AM
Vizard's and Flock of Bird's coordinate systems are defined differently.

This page in the Vizard docs shows Vizard's coordinate system.

http://www.worldviz.com/vizhelp/VizHelp.htm#Old_Book/Understanding_Coordinate_Systems.htm

The FOB documentation shows how theirs is defined.

katewilmut
06-08-2009, 03:57 AM
Thanks for the link Jeff, I have worked this out now