Re: Problem with data-plotting

From: thejna tharammal <ttharammal_at_nyahnyahspammersnyahnyah>
Date: Mon Feb 04 2013 - 10:43:35 MST

Thanks for the suggestions :-). Rasterfill/CellFill worked.
(The blocky appearance is because the file content is basically gridded
station data.)
Thejna.
On 02/04/2013 06:20 PM, Rick Brownrigg wrote:
> Hi,
>
> You might try adding:
>
> res@cnFillMode = "RasterFill"
> or
> res@cnFillMode = "CellFill"
>
> This shows more of your data, but yields a blocky appearance. It also
> shows just how sparse the data really are.
>
> Rick
>
> On Feb 3, 2013, at 9:51 AM, thejna tharammal <ttharammal@marum.de
> <mailto:ttharammal@marum.de>> wrote:
>
>>
>> Hi,
>> I encountered a problem while trying to do a simple contour plot of a
>> 2D data (Netcdf file, 48x96 grid). The plot shows contours over only
>> a few grid-cells, even though there are more valid values in the
>> data. I couldn't find any problems with the netcdf file and the data
>> (though there are many missing values; the data contains the
>> fill_value attribute as well, _FillValue = -9999.). The code is as
>> below:
>>> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
>>> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
>>>
>>> begin
>>> a=addfile("test_data.nc","r")
>>> x = a->HDO
>>> N = num(.not.ismissing(x))
>>> print(N)
>>>
>>> wks = gsn_open_wks("x11","test")
>>> gsn_define_colormap(wks,"rainbow")
>>>
>>> res = True
>>> res@cnFillOn = True
>>> res@gsnSpreadColors = True
>>>
>>> plot = gsn_csm_contour_map(wks,x,res)
>>>
>>> end
>>
>>
>> Thanks a lot in advance,
>>
>> Thejna Tharammal.
>>
>>
>>
>>
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Received on Mon Feb 4 10:43:59 2013

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