[ncl-talk] query

[Barry Lynn]

Hello:

I'd like to use regline, and I don't always know how many points might be
in the data.  For example, if I want to look at 10 points, but one of them
is missing, then when I calculate the slope of the line it will include a
missing value.

I am wondering how I might skip a missing value, and only calculate the
line for present 9 points.

Thanks,

Barry

On Fri, Oct 6, 2017 at 7:08 AM, saurabh rathore <rohitsrb2020 at gmail.com>
wrote:

> Thank you Kevin for your help in modifying my script.
>
> regards, saurabh
>
> On Fri, Oct 6, 2017 at 10:05 AM, Kevin Hallock <hallock at ucar.edu> wrote:
>
>> Hi Saurabh,
>>
>> I have attached a modified version of your script,
>> “depth_trend_line_mod.ncl”. One major change is that it now checks the
>> output of the regline_stats() function to make sure the result is not a
>> missing value.
>>
>> The issue I found was that during the first iteration of your loop (i=0),
>> the value returned by regline_stats() contained a missing value and did not
>> have the “b95” attribute.
>>
>> Also, I chose to explicitly declare temp (“temp = new(1, double)”) before
>> the loop, instead of implicitly declaring it inside the loop (“temp =
>> regline_stats(time,ts(i,:))”). When regline_stats() experiences an error,
>> the value returned is a float instead of a double, which causes issues in
>> later iterations of the loop (with an error such as
>> “fatal:["NclVar.c":1390]:Assignment type mismatch, right hand side can't
>> be coerced to type of left hand side”).
>>
>> I hope this helps!
>> Kevin
>>
>> On Oct 4, 2017, at 1:15 AM, saurabh rathore <rohitsrb2020 at gmail.com>
>> wrote:
>>
>> Dear NCL users,
>>
>> I am trying to save the regression coefficient value from a 2d variable
>> which is in depth and time and also its 95% confidence interval i.e. b95 in
>> regliine_stat function. I want to save the upper and lower bound value of
>> b95 but somehow the function is not working. Please help me out for this. I
>> am attaching the data file and the code that I am using.
>>
>> regards, saurabh
>>
>> --
>>
>>
>> *REGARDS*
>>
>> *Saurabh Rathore*
>> *Research Scholar (PhD.)*
>> *Centre For Oceans, Rivers, Atmosphere & Land Science Technology*
>> *Indian Institute Of Technology, Kharagpur*
>> *contact :- 91- 8345984434*
>> <depth_trend_line.ncl><heat_gd1.nc>_________________________
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>>
>>
>
>
> --
>
>
> *REGARDS*
>
> *Saurabh Rathore*
> *Research Scholar (PhD.)*
> *Centre For Oceans, Rivers, Atmosphere & Land Science Technology*
> *Indian Institute Of Technology, Kharagpur*
> *contact :- 91- 8345984434*
>
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>


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

C.E.O, Weather It Is, LTD
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