Where to put this example?

[mcdittmar]

This is a follow-up from the discussion which took place in the PR Issue #29.

I've completed a new example file and am trying to decide where this fits in the dm_usecases set.
I think it'd fit nicely into the "combined_data" case, whose primary goal appears to be in the AssociatedData relation (with WebEndpoint). This case covers the other 2 flavors, and could fit into the case description.. data obtained from cross match (Source, Detections with assoc. LightCurves) can be combined with similar from other catalogs to generate combined LightCurves.

My 'implementation' of this is merely to summarize the content, show that everything is accessible.

thoughts?

The example illustrates:

• Multiple table usage
  • TimeSeries in Master table, with data from Detection table.
• Different flavors of AssociatedData
  • VOModelInstance and AssociatedMangoInstance
• Annotation to different models
  • The same data is annotated to difference model 'root' elements (mango:Source and cube:SparseCube). This would be a bit more clear if the TimeSeries relation was a reference.

Raw file: (modification of standard_properties case - Chandra file)

• Master Source table: (one record per source)
  • identifier, position, significance, extent, variability
• Detections table: (one per observation)
  • identifier, position, time, flux, hardness_ratios

These are mapped to model instances as:

• Mango instance - Master Source
  Source.identifier => name
  Property (meas:Position) => (gal_l,gal_b)
  Property (meas:Generic) => significance
  Property (mango:FLAG) => extent_flag
  Property (mango:FLAG) => var_inter_hard_flag
  AssocData (mango:Source) => Detections
  AssocData (cube:SparseCube)=> TimeSeries

• Mango instance - Detection
  Source.identifier => name
  Property (meas:Time) => o.gti_obs
  Property (mango:Photometry)=>o.flux_aper_b
  Property (mango:HR) => o.hard_hs|lolim|hilim
  Property (mango:HR) => o.hard_ms|lolim|hilim
  Property (mango:HR) => o.hard_hm|lolim|hilim

• Cube - Light Curve of Detection data for each source
  Observable (meas:Time) => o.gti_obs
  Observable (mango:Photometry)=>o.flux_aper_b

[lmichel]

combined data is the good place for your dataset.
Please put the raw VOTable in raw_data and update the README