data grouping

Data Grouping

One of the advantage of the data annotation is the possibility of grouping data:

• Associating measures with their errors
• Putting related measures together

This mechanism is a Mango cornerstone. The access to associate data could be done by extending standard Astropy classes:

% position = mviewer.get_astropy_sky_coord()  
# Looks like getting a standard SkyCoord but is is more..
% position.__class__
<MivotSkyCoord>
% position.error()
12arcsec (Circle)
% position.associate_measures()
['RadialVelocity', 'ProperMotion']  
% position.associate_measure('RadialVelocity')
1234km/sec