[ncl-talk] Strange problem related to linint1_Wrap

Barry Lynn barry.h.lynn at gmail.com
Mon Oct 30 10:12:13 MDT 2023


Hi Dave:

I thought those quotes were "suspicious."

The labeling is the same regardless of which variable is called for the
plot, so that wasn't the problem.

*Regardless*, your solution worked!  (delete (ff1&HEIGHT)).

Thank you!

On Mon, Oct 30, 2023 at 5:20 PM Dave Allured - NOAA Affiliate <
dave.allured at noaa.gov> wrote:

> Correction.  Do not use quotes here:  delete (ff1&HEIGHT)
>
>
> On Mon, Oct 30, 2023 at 9:16 AM Dave Allured - NOAA Affiliate <
> dave.allured at noaa.gov> wrote:
>
>> Barry, please notice that there is a HEIGHT coordinate variable attached
>> to ff1 after interpolation, but there is no such coordinate variable
>> attached to ff1_s before interpolation.  It looks like the attached HEIGHT
>> coordinate variable is misleading the plot function in some way.  Try
>> delete ("ff1&HEIGHT").
>>
>> I am not familiar with the cross section plotting function.  But it looks
>> like in the first plot, you are setting some plot resources to set the
>> range, spacing, and units of the height axis.  I suspect that these
>> settings are in conflict with the attached HEIGHT coordinates which may
>> have been generated by linint1_Wrap.  The units are different.  Instead of
>> deleting the HEIGHT coordinate variable, you could try deleting or
>> adjusting the conflicting resource settings.
>>
>> If you want to rescale the attached HEIGHT coordinates from meters to km,
>> then simply "ff1&HEIGHT = ff1&HEIGHT / 1000".
>>
>>
>> On Mon, Oct 30, 2023 at 8:08 AM Barry Lynn via ncl-talk <
>> ncl-talk at mailman.ucar.edu> wrote:
>>
>>> Hello:
>>>
>>> I wanted to use linint1 to interpolate WRF data to height surfaces with
>>> constant spacing between levels.  But, there are two mysteries.
>>>
>>> You can see the WRF data in a cross-section of radar in (a; the variable
>>> ff1_s below).  When I interpolate the data (b, ff1) is compacted towards
>>> the bottom of the cross-sectional plot.  Moreover, the height information
>>> on the y-axis will not plot.
>>>
>>> I understand why the data is compacted, but not why I can't eliminate
>>> the white space above.  If I reduce the range of WRF data sampled in the z
>>> direction, I just have a truncated cross-section (it doesn't get any closer
>>> to the top of the cross-section).
>>>
>>> I don't see why using ff1 (from the interpolate) would make the labeling
>>> disappear.
>>>
>>> Variable: ff1_s
>>>
>>> Type: float
>>>
>>> Total Size: 33728 bytes
>>>
>>>             8432 values
>>>
>>> Number of Dimensions: 2
>>>
>>> Dimensions and sizes: [height | 31] x [lon | 272]
>>>
>>> Coordinates:
>>>
>>> Number Of Attributes: 1
>>>
>>>   _FillValue : 9.96921e+36
>>>
>>>
>>> Variable: ff1
>>>
>>> Type: float
>>>
>>> Total Size: 33728 bytes
>>>
>>>             8432 values
>>>
>>> Number of Dimensions: 2
>>>
>>> Dimensions and sizes: [HEIGHT | 31] x [lon | 272]
>>>
>>> Coordinates:
>>>
>>>             HEIGHT: [500..15500]
>>>
>>> Number Of Attributes: 1
>>>
>>>   _FillValue : 9.96921e+36
>>>
>>> --
>>> Barry H. Lynn, Ph.D
>>> Senior Scientist, Lecturer,
>>> The Institute of Earth Sciences,
>>> The Hebrew University of Jerusalem,
>>> Givat Ram, Jerusalem 91904, Israel
>>> Tel: 972 547 231 170
>>> Fax: (972)-25662581
>>>
>>> Weather It Is, LTD
>>> Weather and Climate Focus
>>> https://weather-it-is.com <http://weather-it-is.com>
>>> Jerusalem, Israel
>>> Local: 02 930 9525
>>> Cell: 054 7 231 170
>>> Int-IS: x972 2 930 9525
>>>
>>

-- 

Barry H. Lynn, Ph.D
Senior Scientist, Lecturer,
The Institute of Earth Sciences,
The Hebrew University of Jerusalem,
Givat Ram, Jerusalem 91904, Israel
Tel: 972 547 231 170
Fax: (972)-25662581

Weather It Is, LTD
Weather and Climate Focus
https://weather-it-is.com <http://weather-it-is.com>
Jerusalem, Israel
Local: 02 930 9525
Cell: 054 7 231 170
Int-IS: x972 2 930 9525
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