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[IDV #SUD-184603]: problem loading polar stereographic data into idv

Hi Randy-

> > update: i installed 2.6u2 and loaded the same file and it still loaded in 
> > the wrong location.
> > i placed the file in the ftp directory. Please let me know if you were able 
> > to access it.
> 
> The problem is that the Stereographic projection class is ignoring the false
> easting/northing attributes.  I'm working on a fix.

This required a change to the underlying netCDF stack. It will be
available in the next nightly build, but not in 2.6u2.  There have
been some major changes to the netCDF library that I don't want
in the official release until it can be well tested.

Don

> > ----- Original Message ----
> > From: northrop grumman <address@hidden>
> > To: address@hidden
> > Sent: Thursday, February 12, 2009 8:42:51 AM
> > Subject: Re: [IDV #SUD-184603]: problem loading polar stereographic data 
> > into idv
> >
> > Hi Don,
> >
> > we had upgraded to 2.6u1 and then downgraded back to 2.6 (which is what i 
> > used to load this file) after finding some bugs which were reported. We 
> > were told they would fix those and release a 2.6u2 last week. I am not sure 
> > if this is the issue or not.
> >
> > The file is 1.6Gig. i can put on our ftp server  ftp://wx1.it-protect.com  
> > username: nemo password: nemo
> > the file is called:  clt_CRCM_1991010103.nc
> >
> >
> > We can try and install 2.6u2 test and see if that works. I'll let you know.
> >
> > randy
> >
> >
> >
> > ----- Original Message ----
> > From: Unidata IDV Support <address@hidden>
> > To: address@hidden
> > Cc: address@hidden
> > Sent: Wednesday, February 11, 2009 6:07:40 PM
> > Subject: [IDV #SUD-184603]: problem loading polar stereographic data into 
> > idv
> >
> > Hi Randy-
> >
> > What version of the IDV are you running? See the Help->About menu
> > and send us the version and build date.  If you can send the
> > file, that would help.
> >
> > Don
> >
> > > i have loaded a .nc file into idv but it is not plotting the data in the 
> > > correct location. As a test i ran the application Panoply which displays 
> > > netcdf data and it plots the data in the correct location. See enclosed 
> > > tiff file.
> > >
> > > Below is an ncdump -c of the .nc file.
> > >
> > > thanks,
> > > randy
> > >
> > > netcdf clt_CRCM_1986010103 {
> > > dimensions:
> > > xc = 140 ;
> > > yc = 115 ;
> > > time = UNLIMITED ; // (14600 currently)
> > > variables:
> > > double yc(yc) ;
> > > yc:units = "m" ;
> > > yc:long_name = "y-coordinate of polar_stereographic projection" ;
> > > yc:standard_name = "projection_y_coordinate" ;
> > > yc:axis = "Y" ;
> > > yc:coordinate_defines = "point" ;
> > > yc:actual_range = 0.f, 5700000.f ;
> > > double xc(xc) ;
> > > xc:units = "m" ;
> > > xc:long_name = "x-coordinate of polar_stereographic projection" ;
> > > xc:standard_name = "projection_x_coordinate" ;
> > > xc:axis = "X" ;
> > > xc:coordinate_defines = "point" ;
> > > xc:actual_range = 0.f, 6950000.f ;
> > > double time(time) ;
> > > time:long_name = "time" ;
> > > time:calendar = "365_day" ;
> > > time:standard_name = "time" ;
> > > time:axis = "T" ;
> > > time:units = "days since 1968-01-01 00:00:0.0" ;
> > > time:delta_t = "0000-00-00 03:00:00" ;
> > > time:coordinate_defines = "point" ;
> > > time:actual_range = 6570.125f, 8395.f ;
> > > double lon(yc, xc) ;
> > > lon:units = "degrees_east" ;
> > > lon:long_name = "longitude" ;
> > > lon:standard_name = "longitude" ;
> > > lon:axis = "X" ;
> > > lon:actual_range = 199.8962f, 326.4349f ;
> > > double lat(yc, xc) ;
> > > lat:units = "degrees_north" ;
> > > lat:long_name = "latitude" ;
> > > lat:standard_name = "latitude" ;
> > > lat:axis = "Y" ;
> > > lat:actual_range = 20.60496f, 73.2522f ;
> > > char polar_stereographic ;
> > > polar_stereographic:straight_vertical_longitude_from_pole = 263.f ;
> > > polar_stereographic:standard_parallel = 60.f ;
> > > polar_stereographic:false_easting = 3450000.f ;
> > > polar_stereographic:false_northing = 7450000.f ;
> > > polar_stereographic:latitude_of_projection_origin = 90.f ;
> > > polar_stereographic:grid_mapping_name = "polar_stereographic" ;
> > > polar_stereographic:resolution_at_standard_parallel = 50000.f ;
> > > float clt(time, yc, xc) ;
> > > clt:units = "1" ;
> > > clt:actual_range = 0.f, 0.999f ;
> > > clt:add_offset = 0.f ;
> > > clt:scale_factor = 1.f ;
> > > clt:coordinates = "lon lat" ;
> > > clt:grid_mapping = "polar_stereographic" ;
> > > clt:level_desc = "Surface" ;
> > > clt:grid_desc = "polar_stereographic" ;
> > > clt:standard_name = "cloud_area_fraction" ;
> > > clt:long_name = "Total Cloud Fraction" ;
> > > clt:cell_methods = "time: mean (interval: 3 hours)" ;
> > >
> > > // global attributes:
> > > :Conventions = "CF-1.0" ;
> > > :institution = "Ouranos (Ouranos, Montreal, PQ, Canada)" ;
> > > :source = "CRCM(2006):atmosphere:CRCMv4.2.0(50km,29levels):sea 
> > > ice:AMIPII:land:CLASSv2.7" ;
> > > :project_id = "NARCCAP" ;
> > > :realization = "1" ;
> > > :experiment_id = "1968-2000 climate simulation using CGCM3 member #4 
> > > (mc_abv experiment)" ;
> > > :experiment_id2 = "Ouranos operational simulation afv" ;
> > > :contact1 = "Sebastien Biner" ;
> > > :contact2 = "address@hidden" ;
> > > :contact3 = "550 Sherbrooke Ouest, 19e etage, Montreal, PQ, H3A 1B9, 
> > > Canada" ;
> > > :contact4 = "tel : (514)282.6464 poste 263" ;
> > > :history = "Tue Feb  3 17:31:29 2009: ncrename -a conventions,Conventions 
> > > clt_CRCM_1986010103.nc\n",
> > > "created 24/04/2004 by Ton Nom (netCDF3.6.1 udunits1.12.4)" ;
> > > :table_id = "Table 3" ;
> > > data:
> > >
> > >
> > >
> > >
> > >
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: SUD-184603
> > Department: Support IDV
> > Priority: Normal
> > Status: Open
> >
> >
> >
> >
> >
> 


Ticket Details
===================
Ticket ID: SUD-184603
Department: Support IDV
Priority: Normal
Status: Open