Full LABL_PTR for 3d vectors

[jtniehof]

Summary

SPDF has requested that any simple 3D vectors or triangular (6 element) tensors have a LABL_PTR_1 that can be interpreted without reference to the LABLAXIS. That means both putting more information into the values of the variable pointed to by LABL_PTR_1 and splitting those variables, so that basically every data variable has its own label variable. Detailed list in "requirements" below

Things that do not have to change:

• Only applies to data variables, so we'll not bother on support_data
• Unless noted otherwise, the existing label pointer variable should stay, as it will be used for higher-dimensionality quantities (covariances) and support_data variables (e.g. uncertainties)
• Similarly, the LABLAXIS should stay, as there are utilities that use it.
• If there is a DEPEND pointing to a simple 1, 2, 3 or similar numeric, it does not have to change...just the labels

We probably want to merge #128 before starting on this, as otherwise there are likely to be conflicts. I'm going to give SPDF a little bit of time to review those changes and then merge it myself.

Requirements

For each product and variable, this lists what the new labels should be; i.e. copy the metadata for the existing label, update as necessary (inheritance may be good here), and populate the NRV values in the code

• swapi_l3a_alpha-sw
  • alpha_sw_velocity_rtn ['Va SC R', 'Va SC T', 'Va SC N']
  • alpha_sw_velocity_rtn_sun ['Va Sun R', 'Va Sun T', 'Va Sun N']
• swapi_l3a_proton-sw
  • proton_sw_velocity_rtn ['Vp SC R', 'Vp SC T', 'Vp SC N']
  • proton_sw_velocity_rtn_sun ['Vp Sun R', 'Vp Sun T', 'Vp Sun N']
• swe_l3-sci
  • core_velocity_vector_rtn_fit ['Core v fit R', 'Core v fit T', 'Core v fit N']
  • halo_velocity_vector_rtn_fit ['Halo v fit R', 'Halo v fit T', 'Halo v fit N']
  • core_velocity_vector_rtn_integrated ['Core v int. R', 'Core v int. T', 'Core v int. N']
  • halo_velocity_vector_rtn_integrated ['Halo v int. R', 'Halo v int. T', 'Halo v int. N']
  • total_velocity_vector_rtn_integrated ['Total v int. R', 'Total v int. T', 'Total v int. N']
  • Let's leave in rtn_label, even though nothing will refer to it, because we might want it later
  • core_temperature_tensor_integrated ['Core T_XX', 'Core T_XY', 'Core T_YY', 'Core T_XZ', 'Core T_YZ', 'Core T_ZZ']
  • halo_temperature_tensor_integrated ['Halo T_XX', 'Halo T_XY', 'Halo T_YY', 'Halo T_XZ', 'Halo T_YZ', 'Halo T_ZZ']
  • total_temperature_tensor_integrated ['Total T_XX', 'Total T_XY', 'Total T_YY', 'Total T_XZ', 'Total T_YZ', 'Total T_ZZ']
  • For these three temperature tensor variables, change VAR_NOTES: "Calculated by integration over the measured phase space distribution. In despun pointing set (DPS) coordinates."
  • Remove temperature_tensor_label, but okay to use it as the basis for the above (e.g. inherit)
  • tensor_id can remain as-is (also leave references to it as-is)

Related tickets

No response

[jtniehof]

I am checking with Ruth on temperature labels

EDIT: done, updated in body of issue

[jtniehof]

This is our highest priority L3 item now, higher priority than getting our ducks in a row for the new version numbers, since we'll have to reprocess with this before doing the version rename.

[jtniehof]

Thanks for the catch!