[ncl-talk] Coordinate Subscripting

[Md. Jalal Uddin]

Hi Adam,

Thanks for your kind help. I tried to follow your instructions; however, I
am getting the following errors.

fatal:NclOneDValGetClosestIndex: Non-monotonic coordinate value being used,
can't complete coordinate subscript
fatal:Could not obtain coordinate indexes, unable to perform subscript
fatal:["Execute.c":8637]:Execute: Error occurred at or near line 54 in file
subs_time.ncl

54 line:
 plot = gsn_csm_contour_map(wks,prc_reorder({19980501},:,:),res)

When I used yours suggestion like plot =
gsn_csm_contour_map(wks,prc_reorder({19980422},:,:),res), I got the same
problem.

Any suggestions, please?

Jalal

On Sat, Jan 19, 2019 at 3:19 AM Adam Phillips <asphilli at ucar.edu> wrote:

> Hi Jalal,
> Within your script you are calling cd_calendar, and then subsequently
> calling day_of_year.
> time at units = "days since 1998-1-1 12:00:00"
> utc_date = cd_calendar(time, -5)
> dyear = day_of_year(utc_date(:,0),utc_date(:,1),utc_date(:,2))
>
> day_of_year will return numbers ranging from 1-365, and thus the values
> can repeat if you have multiple years. This is not the type of array that
> should be used for coordinate subscripting. I would recommend calling
> cd_calendar, but retrieving the values in YYYYMMDD format, then assign this
> array as a coordinate variable to your prc_reorder array:
> delete(prc_reorder&time)   ; may not be needed
> prc_reorder&time = cd_calendar(time, -2)
>
> then you should be able to use the following coordinate subscripting to
> plot:
> plot = gsn_csm_contour_map(wks,prc_reorder({19980422},:,:),res)
>
> Hope that helps. If you have any further questions let ncl-talk know.
> Adam
>
>
>
> On Wed, Jan 16, 2019 at 11:11 PM Md. Jalal Uddin <dmjalal90 at gmail.com>
> wrote:
>
>> Hi all,
>>
>> I used cd_calendar to convert utc_date and day_of_year to find the day of
>> year. Now, I want to subscript the time coordinate and plot. Could anyone
>> help me? Please find the script in the attached.
>>
>> Variable: time
>> Type: double
>> Total Size: 22776 bytes
>>             2847 values
>> Number of Dimensions: 1
>> Dimensions and sizes: [time | 2847]
>> Coordinates:
>>             time: [ 120..6939]
>> Number Of Attributes: 5
>>   standard_name : time
>>   long_name : Time
>>   units : days since 1998-1-1 12:00:00
>>   calendar : standard
>>   axis : T
>>
>> Best regards,
>> Jalal
>>
>> --
>> *Md. Jalal Uddin*
>> MSc in Applied Meteorology (English Language)
>> Nanjing University of Information, Science and Technology, China
>> B.Sc. in Disaster Management (Hons.)
>> Patuakhali Science and Technology University, Bangladesh.
>> Cell: +8613260859092, +8801792052662
>> Web: www.dmjalal90.weebly.com
>> Facebook: jalal.hossen.39
>> LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
>> Twitter: dmjalal90
>> Skype: dmjalal90
>> _______________________________________________
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>
>
> --
> Adam Phillips
> Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
> www.cgd.ucar.edu/staff/asphilli/   303-497-1726
>
> <http://www.cgd.ucar.edu/staff/asphilli>
>


-- 
*Md. Jalal Uddin*
MSc in Applied Meteorology (English Language)
Nanjing University of Information, Science and Technology, China
B.Sc. in Disaster Management (Hons.)
Patuakhali Science and Technology University, Bangladesh.
Cell: +8613260859092, +8801792052662
Web: www.dmjalal90.weebly.com
Facebook: jalal.hossen.39
LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
Twitter: dmjalal90
Skype: dmjalal90
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