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<P><FONT SIZE=2>Thank you! You suggested me the right solution. It works now and I can obtain what I need.<BR>
<BR>
Raffaele<BR>
<BR>
<BR>
-----Messaggio originale-----<BR>
Da: Alan Brammer [<A HREF="mailto:abrammer@albany.edu">mailto:abrammer@albany.edu</A>]<BR>
Inviato: mer 12/11/2014 15.32<BR>
A: Raffaele Quarta<BR>
Cc: ncl-talk@ucar.edu<BR>
Oggetto: Re: [ncl-talk] Plot of constant values<BR>
<BR>
It'll take someone with knowledge on the background plotting code to say<BR>
more, but I think you're running into an issue of trying to contour a<BR>
region over only ~4 data points. Looks like AreaFill needs more than 4<BR>
data points to calculate the contours. There should probably be an error<BR>
check here.<BR>
<BR>
If you change the cnFillMode to CellFill or RasterFill then it'll plot as<BR>
expected. Or expand your region to include more than 4 data points.<BR>
<BR>
cnFillMode = "RasterFill"<BR>
cnRasterSmoothingOn = True<BR>
<BR>
The combination of those two resources will produce contours that are very<BR>
similar to AreaFill.<BR>
<BR>
<BR>
~Alan<BR>
<BR>
On Wed, Nov 12, 2014 at 8:46 AM, Raffaele Quarta <raffaele.quarta@linksmt.it<BR>
> wrote:<BR>
<BR>
> Ok, sorry if I got wrong since I called functions instead of resources.<BR>
> I'm trying to make a plot of NetCDF file, by using a tiling approach and<BR>
> making a subset of the data.<BR>
> Although I add the following two lines in my script, as you suggested, I<BR>
> can't obtain what I'd like to.<BR>
><BR>
> --------------------------------<BR>
> res@cnConstFEnableFill = True |<BR>
> res@cnConstFLabelOn = False |<BR>
> --------------------------------<BR>
><BR>
> Attached you will find:<BR>
><BR>
> - file_input_crop.nc (NETCDF input file that I'm using)<BR>
> - tms_output.png (an example of output .PNG that I got)<BR>
> - tms_test.ncl (the script that I'm using for the plot)<BR>
><BR>
> Looking at the output, I believe that NCL isn't able to get the constant<BR>
> value in the selected bounding area.<BR>
><BR>
> Maybe I'm not using appropriately the resources.<BR>
><BR>
> Thank you for the help<BR>
><BR>
> Raffaele<BR>
><BR>
> -----Original Message-----<BR>
> From: Alan Brammer [<A HREF="mailto:abrammer@albany.edu">mailto:abrammer@albany.edu</A> <abrammer@albany.edu>]<BR>
> Sent: Tue 11/11/2014 6:08 PM<BR>
> To: Raffaele Quarta<BR>
> Cc: ncl-talk@ucar.edu<BR>
> Subject: Re: [ncl-talk] Plot of constant values<BR>
><BR>
> It'll help everyone solve this by describing how it is not working? Also<BR>
> fyi these are resources not functions.<BR>
><BR>
><BR>
> This works exactly as expected for me in 6.2.0 and 6.2.1.<BR>
><BR>
><BR>
> x = new ( (/100,100/), float)<BR>
> x = 100<BR>
><BR>
> wks = gsn_open_wks("X11","ConstFill_wks")<BR>
><BR>
> res = True<BR>
> res@cnFillOn = True ;;;; The contour needs to be filled<BR>
> to<BR>
> start with, for a constant value to be filled.<BR>
> res@cnConstFEnableFill = True<BR>
> res@cnConstFLabelOn = False<BR>
><BR>
> plot = gsn_csm_contour(wks, x, res)<BR>
><BR>
><BR>
><BR>
><BR>
> Alan Brammer<BR>
><BR>
><BR>
><BR>
> On Tue, Nov 11, 2014 at 11:29 AM, Raffaele Quarta <<BR>
> raffaele.quarta@linksmt.it> wrote:<BR>
><BR>
> > Hi,<BR>
> ><BR>
> > I'm using the 6.2.0 NCL version. Actually, I'm dealing with the problem<BR>
> to<BR>
> > plot an area with constant value.<BR>
> > I saw that starting from the version 6.2.0, the following function is<BR>
> able<BR>
> > to solve the problem.<BR>
> ><BR>
> > -------------------------<BR>
> > cnConstFEnableFill<BR>
> ><BR>
> > Available in version 6.2.0 and later.<BR>
> > If the boolean resource cnConstFEnableFill is set to True, then in most<BR>
> > cases, constant or near-constant fields will be rendered as a filled<BR>
> area,<BR>
> > rather than having the contoured area remain blank. By default, the<BR>
> > constant field informational text box will still appear; turn it off by<BR>
> > setting cnConstFLabelOn to False.<BR>
> ><BR>
> > In the future, cnConstFEnableFill will likely default to True, with<BR>
> > cnConstFLabelOn defaulting to False unless contour line drawing is<BR>
> enabled.<BR>
> ><BR>
> > Default: False<BR>
> > -----------------------<BR>
> ><BR>
> > I tried to use this solution but it seems not working. Maybe it a bug of<BR>
> > the software?<BR>
> > Can you suggest a different solution?<BR>
> ><BR>
> > Thank you very much.<BR>
> ><BR>
> > Raffaele<BR>
> ><BR>
> > --<BR>
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