[gradsusr] Writing non-coordinate variables
James T. Potemra
jimp at hawaii.edu
Wed Aug 12 22:54:53 EDT 2015
Martin,
I think the problem is with the dimension "evn". You can confirm this
by writing a
descriptor file (see
http://www.iges.org/grads/gadoc/SDFdescriptorfile.html).
Since you only have two, you might try writing these as two separate
variables (e.g.,
EOF1 and EOF2, rather than EOF(1,lat,lon) and EOF(2,lat,lon)). Second,
I'm not sure
you can mix variables that are functions of time (EOF_TS) and those that
are not (EOF).
Again, you might be able to fake this with levels; GrADS can handle
variables with
different number of vertical levels, but I don't think it can handle
variables with different
number of times.
Jim
On 8/11/15 11:26 PM, Martin Addi wrote:
> Thanks for the advice.Below is the meta data and have also attached
> the file.
>
> netcdf EOF {
> dimensions:
> evn = 2 ;
> lat = 44 ;
> lon = 46 ;
> time = 49 ;
> variables:
> double EOF(evn, lat, lon) ;
> EOF:eval_transpose = 7753.36745873359, 4131.29121507285 ;
> EOF:eval = 279121.228514409, 148726.483742623 ;
> EOF:pcvar = 19.72755f, 10.5116f ;
> EOF:matrix = "covariance" ;
> EOF:method = "transpose" ;
> EOF:_FillValue = 9.96920996838687e+36 ;
> EOF:long_name = "EOF: Wgt: MAM: precipitation" ;
> int evn(evn) ;
> evn:long_name = "eigenvalue number" ;
> evn:units = ;
> double lat(lat) ;
> lat:units = "degrees_north" ;
> lat:long_name = "latitude" ;
> double lon(lon) ;
> lon:units = "degrees_east" ;
> lon:long_name = "longitude" ;
> double EOF_TS(evn, time) ;
> EOF_TS:ts_mean = -5361.91594760721, -88.5917578848278 ;
> EOF_TS:matrix = "covariance" ;
> EOF_TS:_FillValue = 9.96920996838687e+36 ;
> EOF_TS:long_name = "EOF: Amplitude: Wgt: MAM: precipitation" ;
> double time(time) ;
> time:long_name = "time" ;
> time:units = "days since 1900-1-1" ;
> time:calendar = "gregorian" ;
>
> // global attributes:
> :title = "EOF of precipitation" ;
> data:
>
> evn = 1, 2 ;
>
> lat = -11.75, -11.25, -10.75, -10.25, -9.75, -9.25, -8.75, -8.25, -7.75,
> -7.25, -6.75, -6.25, -5.75, -5.25, -4.75, -4.25, -3.75, -3.25, -2.75,
> -2.25, -1.75, -1.25, -0.75, -0.25, 0.25, 0.75, 1.25, 1.75, 2.25,
> 2.75,
> 3.25, 3.75, 4.25, 4.75, 5.25, 5.75, 6.25, 6.75, 7.25, 7.75, 8.25,
> 8.75,
> 9.25, 9.75 ;
>
> lon = 7.25, 7.75, 8.25, 8.75, 9.25, 9.75, 10.25, 10.75, 11.25, 11.75,
> 12.25,
> 12.75, 13.25, 13.75, 14.25, 14.75, 15.25, 15.75, 16.25, 16.75, 17.25,
> 17.75, 18.25, 18.75, 19.25, 19.75, 20.25, 20.75, 21.25, 21.75, 22.25,
> 22.75, 23.25, 23.75, 24.25, 24.75, 25.25, 25.75, 26.25, 26.75, 27.25,
> 27.75, 28.25, 28.75, 29.25, 29.75 ;
>
> time = 22020, 22385, 22750, 23115, 23481, 23846, 24211, 24576, 24942,
> 25307,
> 25672, 26037, 26403, 26768, 27133, 27498, 27864, 28229, 28594, 28959,
> 29325, 29690, 30055, 30420, 30786, 31151, 31516, 31881, 32247, 32612,
> 32977, 33342, 33708, 34073, 34438, 34803, 35169, 35534, 35899, 36264,
> 36630, 36995, 37360, 37725, 38091, 38456, 38821, 39186, 39552 ;
> }
>
>
> On Wed, Aug 12, 2015 at 9:22 AM, Martin Addi <addimartin32 at gmail.com
> <mailto:addimartin32 at gmail.com>> wrote:
>
> Thanks for the advice.Below is the meta data and have also
> attached the file.
> netcdf EOF {
> dimensions:
> evn = 2 ;
> lat = 44 ;
> lon = 46 ;
> time = 588 ;
> variables:
> double EOF(evn, lat, lon) ;
> EOF:eval_transpose = 2839081.44665023, 744764.87934487 ;
> EOF:eval = 8517244.33995068, 2234294.63803461 ;
> EOF:pcvar = 60.47348f, 15.86377f ;
> EOF:matrix = "covariance" ;
> EOF:method = "transpose" ;
> EOF:_FillValue = 9.96920996838687e+36 ;
> EOF:long_name = "EOF: Wgt: precipitation" ;
> int evn(evn) ;
> evn:long_name = "eigenvalue number" ;
> evn:units = ;
> double lat(lat) ;
> lat:units = "degrees_north" ;
> lat:long_name = "latitude" ;
> double lon(lon) ;
> lon:units = "degrees_east" ;
> lon:long_name = "longitude" ;
> double EOF_TS(evn, time) ;
> EOF_TS:ts_mean = 124.04653929397, -4574.92777594637 ;
> EOF_TS:matrix = "covariance" ;
> EOF_TS:_FillValue = 9.96920996838687e+36 ;
> EOF_TS:long_name = "EOF: Amplitude: Wgt: precipitation" ;
> double time(time) ;
> time:calendar = "gregorian" ;
> time:units = "days since 1900-1-1" ;
> time:long_name = "time" ;
>
> // global attributes:
> :title = "EOF of precipitation" ;
> data:
>
> evn = 1, 2 ;
>
>
> On Wed, Aug 12, 2015 at 6:02 AM, Kishore Ragi
> <kishoreragi at gmail.com <mailto:kishoreragi at gmail.com>> wrote:
>
> Nobody can help you if you don't give metadata of your file so
> get metadata using ncdump and paste it here in the forum.
> Maybe, somebody can help you ....
>
> Regards,
>
> *Kishore Ragi,
>
> *
> *PhD student in climate science,
> *
> *National Institute of Technology, Rourkela,
> *
> *India- 769008
> *
> *Phone: +91-8908671881
>
> http://www.researchgate.net/profile/Kishore_Ragi
>
> https://in.linkedin.com/in/kishoreragi
>
> http://kishoreragi.webnode.com/*
>
> On Wed, Aug 12, 2015 at 11:02 AM, Martin Addi
> <addimartin32 at gmail.com <mailto:addimartin32 at gmail.com>> wrote:
>
> ncdump can open the file but i want to do my plots and
> further analysis in GrADS.
>
> On 12 Aug 2015 05:02, "Adv" <advita6 at gmail.com
> <mailto:advita6 at gmail.com>> wrote:
>
> Hi,
> Please try to open nc file using the ncdump command.
> Goodluck
>
> On Tue, Aug 11, 2015 at 10:34 PM, Martin Addi
> <addimartin32 at gmail.com
> <mailto:addimartin32 at gmail.com>> wrote:
>
> Hello,
> I used ncl to do an eof analysis and wrote the
> output to .nc file to display in GrADS but when i
> called the file in GrADS i had this message
> "gadsdf:SDF file does not have any non-coordinate
> variables". How can i solve this to sucessfully
> open and display my output in GrADS.
> Thank you.
>
>
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