Further consolidation of ropp_pp module

[Ian Culverwell]

Stig Syndergaard (DMI) writes

Hi Chris,

I agree with your observations for the lat, lon, azimuth 
interpolation in the code, and from your figures it looks like 
you've found a good solution. Why only temporary?

No doubt that the occ_tool (and the invert_tool) has some issues. 
Maybe we should make a coordinated effort to get them solved for 
the next ROPP release. We have the ones from Kjartan, my 
Struct.Uncert. report, our DMI tickets 
(https://trac.romsaf.org/ropp/report/10) and now your 
investigations with GNOS - probably with some overlap.

I also think we should aim at merging the occ_tool and the
invert_tool (I think I've mentioned that earlier), it would make 
maintenance easier.

Ian: Would it be possible to schedule all this for ROPP 9?

(Full email attached.)

This is a good idea, but it's unlikely to come off.

[Ian Culverwell]

SSY_email_10022015.txt

[Ian Culverwell]

The proposed merger of ropp_pp_occ_tool and ropp_pp_invert_tool has been made to the dmi_trunk, and we should probably commit to doing this at ROPP10.0.

[Ian Culverwell]

This will have to be postponed to ROPP10.0 - not enough time.

[Stig Syndergaard]

Issues included in #613 - #617. Closing.