[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[netCDFJava #CIB-907867]: issue with mercator projection

Hi Ghansham:

Are you sure you need Mercator with elliptical earth, and not Transverse 
Mercator (which uses an elliptical earth) ?

If you are sure, we would welcome a contribution from you to add that 
projection. Best would be if you can do a pull request directly on the github 
repository. Use the 4.5.3 branch would be best.

Thank you,

> I tried to go through the code and actual the issue is related to the fact
> that ucar.unidata.geoloc.projection.Mercator assumes eartg shape to be
> spherical while I expect it to be ellipsoidal with semi-major and
> semi-minor axes. I can add in the proj4 mercator implementation which
> allows semi major and minor axes for defining ellipsoidal shape with test
> dataset. And we can modify the ucar.nc2.dataset.transform.Mercator to pick
> ellipsoidal implementation when semi-major an minor axes is specified.
> Waiting to hear your point of view on this.
> regards
> Ghansham
> address@hidden> wrote:
> >
> > Ghansham Sangar,
> >
> > Your Ticket has been received, and a Unidata staff member will review it
> > and reply accordingly. Listed below are details of this new Ticket. Please
> > make sure the Ticket ID remains in the Subject: line on all correspondence
> > related to this Ticket.
> >
> >     Ticket ID: CIB-907867
> >     Subject: issue with mercator projection
> >     Department: Support netCDF Java
> >     Priority: Normal
> >     Status: Open
> >
> >
> >
> > Please let us know how we can assist you further.
> >
> > Unidata User Support
> >
> >

Ticket Details
Ticket ID: CIB-907867
Department: Support netCDF Java
Priority: Normal
Status: Open

NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.