[gradsusr] Help: How to customize contour label in GrADS?

[Jennifer Adams]

You can use 'set clab FOO' and it will draw a label as "FOO". I guess you could draw each contour individually, looping over the contour level, convert the level from julian day to a string, then label that contour appropriately. 
--Jennifer
 

On Jan 16, 2014, at 1:18 PM, Ricardo Hallak wrote:

> Hi Jennifer,
> 
> I think JH Yap wants to get a contour label with something like, for example, "21JAN" instead the julian day 21, and so on. His contour levels are julian days. I guess it is kind of difficult to do, if not impossible. That is, to get julian days as contour levels in a map, certainly it comes from a matrix of data composed by julian days, one julian day (a number) for each grid point. How to get the same information using a "string" date? The problem here is that contours, in GrADS, comes from numbers, through a process of interpolation (numbers again), not from strings. How to interpolate "strings"?
> 
> Maybe JH Yap could give us an example of contour label he wants, just to clarify a bit more.
> 
> Ricardo
> 
> De: "Jennifer Adams" <jma at cola.iges.org>
> Para: "GrADS Users Forum" <gradsusr at gradsusr.org>
> Enviadas: Quinta-feira, 16 de Janeiro de 2014 12:48:26
> Assunto: Re: [gradsusr] Help: How to customize contour label in GrADS?
> 
> Are you interesting in changing the contour labels or the axis labels? For contour labels, 'set clab' is the most general, and 'set clopts' and 'set clskip' control their appearance. For axis labels, most of the controls do not apply to a date/time axis, so you have to override manually with 'set xlabs'. --Jennifer
> 
> On Jan 15, 2014, at 3:36 AM, 얍준후이 wrote:
> 
> Hi GrADS team,
>  
> I have displayed my contour by default like this
>  
> ga-> set gxout contour
> ga -> d flowers
> Contouring: 80 to 145 interval 5 
>  
> Then I get my contour presented in map as per the image attached.
>  
> The contour label is julian date.
> 
> 
>  
> Now I would like to change the contour label to regular date.
>  
> I already made a function for julian date to regular date conversion in GrADS script language.
>  
> How could I customize the default contour label (julian date) to regular date by using my function? 
>  
> Thank you
>  
> -------------------------
> JH Yap, M.Eng.
> 
> Software Development Engineer / Safe Korea
> 
> Office: +82-02-2668-3926
> Mobile: +82-10-8281-3241
> E-mail: jhyap at safekorea.co.kr 
>  
>  
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> --
> Jennifer M. Adams
> Center for Ocean-Land-Atmosphere Studies (COLA)
> 111 Research Hall, Mail Stop 2B3
> George Mason University
> 4400 University Drive
> Fairfax, VA 22030 
> 
> 
> 
> 
> 
> 
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--
Jennifer M. Adams
Center for Ocean-Land-Atmosphere Studies (COLA)
111 Research Hall, Mail Stop 2B3
George Mason University
4400 University Drive
Fairfax, VA 22030 





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