[ncl-talk] Plot of constant values

[Raffaele Quarta]

Ok, sorry if I got wrong since I called functions instead of resources.
I'm trying to make a plot of NetCDF file, by using a tiling approach and making a subset of the data. 
Although I add the following two lines in my script, as you suggested, I can't obtain what I'd like to.   

--------------------------------
res at cnConstFEnableFill = True   |
res at cnConstFLabelOn = False     |
--------------------------------

Attached you will find:

- file_input_crop.nc (NETCDF input file that I'm using)
- tms_output.png (an example of output .PNG that I got)
- tms_test.ncl (the script that I'm using for the plot)

Looking at the output, I believe that NCL isn't able to get the constant value in the selected bounding area.

Maybe I'm not using appropriately the resources.

Thank you for the help

Raffaele 

-----Original Message-----
From: Alan Brammer [mailto:abrammer at albany.edu]
Sent: Tue 11/11/2014 6:08 PM
To: Raffaele Quarta
Cc: ncl-talk at ucar.edu
Subject: Re: [ncl-talk] Plot of constant values
 
It'll help everyone solve this by describing how it is not working?  Also
fyi these are resources not functions.


This works exactly as expected for me in 6.2.0 and 6.2.1.


x = new ( (/100,100/), float)
x = 100

wks = gsn_open_wks("X11","ConstFill_wks")

res = True
res at cnFillOn = True                 ;;;;  The contour needs to be filled to
start with, for a constant value to be filled.
res at cnConstFEnableFill = True
res at cnConstFLabelOn = False

plot = gsn_csm_contour(wks, x, res)




Alan Brammer



On Tue, Nov 11, 2014 at 11:29 AM, Raffaele Quarta <
raffaele.quarta at linksmt.it> wrote:

>  Hi,
>
> I'm using the 6.2.0 NCL version. Actually, I'm dealing with the problem to
> plot an area with constant value.
> I saw that starting from the version 6.2.0, the following function is able
> to solve the problem.
>
> -------------------------
> cnConstFEnableFill
>
> Available in version 6.2.0 and later.
> If the boolean resource cnConstFEnableFill is set to True, then in most
> cases, constant or near-constant fields will be rendered as a filled area,
> rather than having the contoured area remain blank. By default, the
> constant field informational text box will still appear; turn it off by
> setting cnConstFLabelOn to False.
>
> In the future, cnConstFEnableFill will likely default to True, with
> cnConstFLabelOn defaulting to False unless contour line drawing is enabled.
>
> Default: False
> -----------------------
>
> I tried to use this solution but it seems not working. Maybe it a bug of
> the software?
> Can you suggest a different solution?
>
> Thank you very much.
>
> Raffaele
>
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