[Paraview] netcdf time series

[jade mackay]

Yes, you are right. I succeeded using a new file with a Time variable that
takes only the Time dimension, includes an appropriate units attribute, and
was assigned with an array of doubles:
netcdf new_netcdf_file {
dimensions:
        DateStrLen = 19 ;
        Time = 25 ;
        south_north = 519 ;
        force_layers = 8 ;
        west_east_stag = 424 ;
        bottom_top_stag = 51 ;
        soil_layers_stag = 5 ;
        bottom_top = 50 ;
        west_east = 423 ;
        south_north_stag = 520 ;
variables:
        float T(Time, bottom_top, south_north, west_east) ;
                T:units = "K" ;
        double Time(Time) ;
                Time:units = "seconds since my last coffee" ;
}

Thanks, jade


On 15 November 2012 18:02, Moreland, Kenneth <kmorel at sandia.gov> wrote:

>   Yes, having the variable with a different name as the dimension is a
> problem. If the name is not the same, then the reader will not pick up the
> variable as a description of the dimension. Another problem is that the
> Time variable should only have one dimension that is Time. Your variable
> has a second dimension DateStrLen. This is apparently to store strings
> describing the time, but based  on your units the contents should be a
> number counting seconds.
>
> -Ken
>
>  Sent from my iPad so blame autocorrect.
>
> On Nov 15, 2012, at 10:29 AM, "jade mackay" <jademackay at gmail.com> wrote:
>
>  Hi Ken,
>
> Thanks for your reply. Yes, I am the "netCDF files generic and CF
> conventions" reader.
> The file possesses the the variable 'Times':
>
> variables:
>         char Times(Time, DateStrLen) ;
>                 Times:units = "seconds since 2010-11-9 00:00:00+0:00" ;
>
>
> and the Times variable is a list of datetimes (with slightly different
> format to the example on the CF page):
> ['2012-09-06_00:00:00',
>  '2012-09-06_01:00:00',
>  '2012-09-06_02:00:00',
>  '2012-09-06_03:00:00',
>  '2012-09-06_04:00:00',
>  '2012-09-06_05:00:00',
>  '2012-09-06_06:00:00',
>  '2012-09-06_07:00:00',
>  '2012-09-06_08:00:00',
>  '2012-09-06_09:00:00',
>  '2012-09-06_10:00:00',
>  '2012-09-06_11:00:00',
>  '2012-09-06_12:00:00',
>  '2012-09-06_13:00:00',
>  '2012-09-06_14:00:00',
>  '2012-09-06_15:00:00',
>  '2012-09-06_16:00:00',
>  '2012-09-06_17:00:00',
>  '2012-09-06_18:00:00',
>  '2012-09-06_19:00:00',
>  '2012-09-06_20:00:00',
>  '2012-09-06_21:00:00',
>  '2012-09-06_22:00:00',
>  '2012-09-06_23:00:00',
>  '2012-09-07_00:00:00']
>
> Could the problem be that the dimension is named 'Time', and the variable
> is named 'Times'?
>
> thanks, jade
>
>
> On 15 November 2012 18:31, Moreland, Kenneth <kmorel at sandia.gov> wrote:
>
>>  Jade,
>>
>> We need more information before we can properly answer this question.
>> First, which netCDF reader are you using (there is more than one in
>> ParaView)?  Unless your data is of a particular format, you should be using
>> the "netCDF files generic and CF conventions".
>>
>> Second, we need to know the information about the variables defined.
>> What variables are defined, what are their dimensions, and what are their
>> attributes.
>>
>> I am guessing that you have not properly identified the variable "Time"
>> as a time dimension in your netCDF file (simply naming it "Time" is not
>> sufficient in the CF convention).  To identify it as time, you also need to
>> define a variable named "Time" of dimension "Time" and containing the
>> property "units" that contains a string value defining some time unit (such
>> as "seconds since 1992-10-8 15:15:42.5 -6:00".  The contents of this
>> variable should contain the time stamp for each time slice.  See the
>> documentation for the CF convention (
>> http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.6/cf-conventions.html#time-coordinate)
>> for more details.
>>
>> -Ken
>>
>>  ------------------------------
>> *From:* paraview-bounces at paraview.org [paraview-bounces at paraview.org] on
>> behalf of jade mackay [jademackay at gmail.com]
>> *Sent:* Wednesday, November 14, 2012 7:39 PM
>> *To:* paraview at paraview.org
>> *Subject:* [EXTERNAL] [Paraview] netcdf time series
>>
>>   Hi,
>>
>> I am seeking advice regarding visualization of weather model output using
>> paraview.
>> I am only able to view the first frame of my netcdf file. The dimensions
>> are:
>>
>> netcdf mynetcdffile {
>> dimensions:
>>         Time = UNLIMITED ; // (25 currently)
>>         DateStrLen = 19 ;
>>         west_east = 329 ;
>>         south_north = 329 ;
>>         bottom_top = 50 ;
>>         bottom_top_stag = 51 ;
>>         soil_layers_stag = 5 ;
>>         west_east_stag = 330 ;
>>         force_layers = 8 ;
>>         south_north_stag = 330 ;
>>
>>
>> Thanks in advance,
>>
>> Jade
>>
>>
>
>
> --
> Jade Mackay
> e: jademackay at gmail.com
> m: +64-(0)22-319-0847
>
>
>


-- 
Jade Mackay
e: jademackay at gmail.com
m: +64-(0)22-319-0847
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