[ncl-talk] Trying to understand code in NCL example documentation...

[Adam Phillips]

Hi Srishti,
The answer to all of your questions is yes. I would again recommend reading
the documentation I pointed you to in my first reply as that details
coordinate variables pretty clearly.
Adam


On Thu, Apr 25, 2019 at 12:11 PM Srishti Dasarathy <srdasara at ucsd.edu>
wrote:

> Hi Adam,
>
> Thank you so much for this!
>
> To make sure my understanding is correct, ‘ depol!0 = “ hgt “ ' was used
> to name the left dimension hgt, and ‘ depol!1 = “ xcoord “ ‘  was used to
> name the right dimension xcoord.
>
> ‘ depol&hgt = hgt ' and ‘ depol&xcoord ' was then used to assign the hgt
> and xcoord arrays to the above named dimensions, respectively.
>
> I’m a little confused beyond this point.
>
> So, the dimensions of depol are depol(hgt, xcoord)? Does the array of
> values within depol match the values of hgt and xcoord?
>
> Earlier in the script, there is also a function ‘ hgt!0 = “hgt” ' — was
> this naming the first (and only) dimension of hgt as hgt?
>
> I look forward to the clarification, and thanks again!
>
> Best wishes,
> Srishti
>
> On Apr 25, 2019, at 9:36 AM, Adam Phillips <asphilli at ucar.edu> wrote:
>
> Hi Srishti,
> That snippet of code is assigning coordinate variables (hgt and xcoord) to
> each dimension of the depol array. See page 11 of the NCL User's Guide here:
>
> http://www.ncl.ucar.edu/Document/Manuals/NCL_User_Guide/NCL_User_Guide_v1.1_Legal.pdf
> Adam
>
> On Thu, Apr 25, 2019 at 10:30 AM Srishti Dasarathy <srdasara at ucsd.edu>
> wrote:
>
>> Dear NCL-talk community,
>>
>> I have a bit of an unusual question. I'm currently in the midst of
>> transferring my code over to MATLAB for various reasons, but I'm having
>> trouble understanding the syntax of certain sections pasted here
>> <https://www.ncl.ucar.edu/Applications/calipso.shtml> under
>> calipso_3.ncl. I was wondering if you can help me understand what is going
>> on.
>>
>> I am trying to produce a similar imagine in MATLAB, but do not understand
>> these lines completely even after looking at the documentation.
>>
>> The lines I'm struggling to understand are below:
>>
>> ;----------------------------------------------
>> ;  ASSIGN NEW DIMENSIONS AND ATTRIBUTES TO COORDINATE CALIPSO DATA WITH  ;  ALTITUDE
>> ;----------------------------------------------
>>    depol!0   = "hgt"
>>    depol&hgt =  hgt
>>    xcoord    = ispan(0,dimsizes(lat(:,0)) - 1,1)
>>    depol!1   = "xcoord"
>>    depol&xcoord = xcoord
>>
>>
>> I understand that hgt is the array of altitude values, but I do not
>> understand how depolorization is getting associated with either hgt or
>> xcoord.
>>
>> If anyone has any guidance on understanding this code example so that I
>> can logically transfer the syntax to MATLAB, I'd really appreciate it!
>>
>> Thank you,
>> Srishti Dasarathy
>>
>> --
>> Srishti Dasarathy
>> Graduate Student
>> Integrative Oceanography Division
>> Scripps Institution of Oceanography
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>
>
> --
> Adam Phillips
> Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
> www.cgd.ucar.edu/staff/asphilli/   303-497-1726
>
> <http://www.cgd.ucar.edu/staff/asphilli>
>
>
>

-- 
Adam Phillips
Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
www.cgd.ucar.edu/staff/asphilli/   303-497-1726

<http://www.cgd.ucar.edu/staff/asphilli>
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