[ncl-talk] convert the time "since seconds" to month-year
Amal Inge
amalingenieur89 at gmail.com
Fri Dec 14 13:40:21 MST 2018
Many thanks for your help..I am learning a lot from you
best regards
amal
Le mar. 11 déc. 2018 à 20:54, Mary Haley <haley at ucar.edu> a écrit :
> To help with coding NCL and correctly spelling resources, I highly
> recommend using an editor enhancement that will highlight correctly spelled
> NCL functions and resources for you. You can see some samples and
> documentation at:
>
> http://www.ncl.ucar.edu/Applications/editor.shtml
>
> I've attached a PNG image that shows what part of your original "xy.ncl"
> script looks like with the emacs editor enhancements. Note that the
> correctly spelled resources are green, while the ones that are not
> (tmXValues and tmXLabels) are black.
>
> Also, if you run across an error or warning message you don't understand,
> visit the "common NCL error messages" page:
>
> http://www.ncl.ucar.edu/Document/Language/error_messages.shtml
>
> Regards,
>
> --Mary
>
>
> On Tue, Dec 11, 2018 at 12:02 PM Dennis Shea <shea at ucar.edu> wrote:
>
>> When you encounter an error like this, I *s*uggest that you examine the
>> 'tm' resources.
>>
>> At the top of the NCL home page: (a) click 'Resources'; (b) click 'tm'
>> [Tickmark].
>>
>>
>> *http://www.ncl.ucar.edu/Document/Graphics/Resources/tm.shtml*
>> <http://www.ncl.ucar.edu/Document/Graphics/Resources/tm.shtml>
>>
>> tmXLabels <--- No such label. Misspelled!
>>
>> There is a
>>
>> tmXBLabels<--- ?what you want?
>>
>> =======
>> A less sophisticated method:
>>
>>
>> *http://www.ncl.ucar.edu/Document/Functions/Contributed/yyyymm_to_yyyyfrac.shtml*
>> <http://www.ncl.ucar.edu/Document/Functions/Contributed/yyyymm_to_yyyyfrac.shtml>
>>
>> *http://www.ncl.ucar.edu/Applications/time.shtml*
>> <http://www.ncl.ucar.edu/Applications/time.shtml>
>>
>> tstart = 2000
>> tend = 2006
>> yyyymm = *yyyymm_time* <http://www.ncl.ucar.edu/Document/Functions/Contributed/yyyymm_time.shtml>(tstart, tend, "integer")
>>
>> or
>> yyyymm = *cd_calendar* <http://www.ncl.ucar.edu/Document/Functions/Built-in/cd_calendar.shtml>(time, *-1*)
>>
>> then
>>
>> yyyyfrac = yyyymm_to_yyyyfrac(yyyymm,0) ; create fractional years for plotting purposes
>> ; XB axis
>> plot = gsn_csm_xy(wks,yyyyfrac, y,res)
>>
>>
>> On Tue, Dec 11, 2018 at 11:34 AM Amal Inge <amalingenieur89 at gmail.com>
>> wrote:
>>
>>> Thanks Rick, it works now but it's not reading the tickmarks it gives
>>> me this warning:
>>> warning:tmXValues is not a valid resource in xy_xy at this time
>>> warning:tmXLabels is not a valid resource in xy_xy at this time
>>> warning:tmXValues is not a valid resource in xy_xy at this time
>>> warning:tmXLabels is not a valid resource in xy_xy at this time
>>>
>>> the plot attached
>>>
>>> Le mar. 11 déc. 2018 à 18:53, Rick Brownrigg <brownrig at ucar.edu> a
>>> écrit :
>>>
>>>> Did you add this line ath the top, as per the documentation?
>>>>
>>>> load "$NCARG_ROOT/lib/ncarg/nclscripts/contrib/time_axis_labels.ncl"
>>>>
>>>> https://www.ncl.ucar.edu/Document/Functions/User_contributed/time_axis_labels.shtml
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Tue, Dec 11, 2018 at 10:21 AM Amal Inge <amalingenieur89 at gmail.com>
>>>> wrote:
>>>>
>>>>> hi Carl,
>>>>> i made some modification in the script attached but I had this error;
>>>>>
>>>>> fatal:syntax error: line 49 in file xy.ncl before or near ; sets the
>>>>> correct time labels
>>>>>
>>>>> time_axis_labels(x, res, restime) ; sets the correct time labels
>>>>> ^
>>>>>
>>>>> fatal:syntax error: possibly an undefined procedure
>>>>> fatal:Syntax Error in block, block not executed
>>>>> fatal:error at line 52 in file xy.ncl
>>>>>
>>>>>
>>>>>
>>>>> Le mar. 11 déc. 2018 à 14:47, Carl Schreck <cjschrec at ncsu.edu> a
>>>>> écrit :
>>>>>
>>>>>> Please see
>>>>>> https://www.ncl.ucar.edu/Document/Functions/User_contributed/time_axis_labels.shtml
>>>>>> and the examples therein.
>>>>>>
>>>>>> Does it work if you uncomment line 49? If not, can you be more
>>>>>> specific on what "doesn't work"?
>>>>>>
>>>>>> On Tue, Dec 11, 2018 at 3:24 AM Amal Inge <amalingenieur89 at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>>
>>>>>>> Dear NCL experts,
>>>>>>>
>>>>>>> I want to plot a time series of monthly data of nc file with the
>>>>>>> script attached but it didn't work, i think that I should convert the time
>>>>>>> "since seconds" to month-year.
>>>>>>> how could i do this please?
>>>>>>>
>>>>>>> many thanks
>>>>>>> Amal
>>>>>>>
>>>>>>> netcdf dox01_med_0-52 {
>>>>>>> dimensions:
>>>>>>> time = UNLIMITED ; // (215 currently)
>>>>>>> lev = 13 ;
>>>>>>> lat = 253 ;
>>>>>>> lon = 670 ;
>>>>>>> variables:
>>>>>>> double time(time) ;
>>>>>>> time:axis = "T" ;
>>>>>>> time:calendar = "standard" ;
>>>>>>> time:units = "seconds since 1970-01-01 00:00:00" ;
>>>>>>> time:long_name = "time" ;
>>>>>>> time:standard_name = "time" ;
>>>>>>> float lev(lev) ;
>>>>>>> lev:_CoordinateZisPositive = "down" ;
>>>>>>> lev:_CoordinateAxisType = "Height" ;
>>>>>>> lev:axis = "Z" ;
>>>>>>> lev:positive = "down" ;
>>>>>>> lev:units = "m" ;
>>>>>>> lev:long_name = "depth" ;
>>>>>>> lev:standard_name = "depth" ;
>>>>>>> float lat(lat) ;
>>>>>>> lat:axis = "Y" ;
>>>>>>> lat:units = "degrees_north" ;
>>>>>>> lat:long_name = "latitude" ;
>>>>>>> lat:standard_name = "latitude" ;
>>>>>>> float lon(lon) ;
>>>>>>> lon:axis = "X" ;
>>>>>>> lon:units = "degrees_east" ;
>>>>>>> lon:long_name = "longitude" ;
>>>>>>> lon:standard_name = "longitude" ;
>>>>>>> float dox(time, lev, lat, lon) ;
>>>>>>> dox:missing_value = 1.e+20f ;
>>>>>>> dox:_ChunkSizes = 1, 22, 84, 161 ;
>>>>>>> dox:units = "millimol m-3" ;
>>>>>>> dox:long_name = "Mole concentration of Dissolved Molecular
>>>>>>> Oxygen in sea water" ;
>>>>>>> dox:standard_name =
>>>>>>> "mole_concentration_of_dissolved_molecular_oxygen_in_sea_water" ;
>>>>>>> dox:_FillValue = 1.e+20f ;
>>>>>>>
>>>>>>> // global attributes:
>>>>>>> :creation_date = "Tue Dec 4 23:27:50 CET 2018" ;
>>>>>>> :Conventions = "None" ;
>>>>>>> :source_file = "dox_med_0-52.nc" ;
>>>>>>> :title = "NCL Efficient Approach to netCDF Creation" ;
>>>>>>> }
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> ncl-talk mailing list
>>>>>>> ncl-talk at ucar.edu
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>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>>
>>>>>> <https://ncics.org/> *Carl J. Schreck III, PhD*
>>>>>> *Research Scholar*
>>>>>> North Carolina State University <http://ncsu.edu/>
>>>>>> North Carolina Institute for Climate Studies (NCICS)
>>>>>> <https://ncics.org/>
>>>>>> 151 Patton Ave, Asheville, NC 28801
>>>>>> e: cjschrec at ncsu.edu
>>>>>> o: +1 828 257 3140 <(828)%20257-3140>
>>>>>> c: +1 828 484 1702 <(828)%20484-1702>
>>>>>> Publications
>>>>>> <http://scholar.google.com/citations?hl=en&user=th8ONEcAAAAJ&view_op=list_works&sortby=pubdate>
>>>>>> ncics.org/mjo
>>>>>> CycloneCenter.org <https://www.cyclonecenter.org/>
>>>>>>
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