[ncl-talk] trend_plot_query

[Rashed Mahmood]

The problem is that you did not specify time correctly. See attached script
and plot.

Please next time send a cleaner code, for example, there was a part which
needed a shapefile. I turned it off ...




On Wed, Jun 20, 2018 at 9:35 PM, Kunal Bali <kunal.bali9 at gmail.com> wrote:

> sorry for the late reply.
>
> please find the data and script in the attached file.
>
>
> thanks for sharing your thoughts.
> ---
> Kunal Bali
>
>
>
>
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> On Tue, Jun 19, 2018 at 9:10 PM Rashed Mahmood <rashidcomsis at gmail.com>
> wrote:
>
>> It would be easier to diagnose if there is more information, especially a
>> clean script and the data file, if possible.
>>
>> However, from the variable summary, I am wondering why min/max are equal
>> to missing values?  *vmax :    1e+15   vmin :    -1e+15*
>>
>>
>>
>> On Tue, Jun 19, 2018 at 2:15 AM, Kunal Bali <kunal.bali9 at gmail.com>
>> wrote:
>>
>>> I tried to calculate the trend using
>>>
>>>    ts      = var_a(lat|:,lon|:,time|:)
>>>    time  = ts&time
>>>    rc      = regCoef(time,ts)
>>>   printVarSummary(rc)
>>>   printMinMax(rc,0)  (https://www.ncl.ucar.edu/
>>> Applications/Scripts/regress_2.ncl)
>>>
>>>
>>> Script run perfectly and able to generate the plot but the values are
>>> not coming correctly.
>>>
>>> Summary of the file is
>>>
>>> Variable: var_a
>>> Type: float
>>> Total Size: 231552 bytes
>>>             57888 values
>>> Number of Dimensions: 3
>>> Dimensions and sizes:    [time | 18] x [lat | 67] x [lon | 48]
>>> Coordinates:
>>>             time: [22200..8964600]
>>>             lat: [   5..  38]
>>>             lon: [68.125..97.5]
>>> Number Of Attributes: 8
>>>   standard_name :    fractional_area_of_land_snowcover
>>>   long_name :    fractional_area_of_land_snowcover
>>>   units :    1
>>>   _FillValue :    1e+15
>>>   missing_value :    1e+15
>>>   fmissing_value :    1e+15
>>>   vmax :    1e+15
>>>   vmin :    -1e+15
>>>
>>> Variable: rc
>>> Type: double
>>> Total Size: 25728 bytes
>>>             3216 values
>>> Number of Dimensions: 2
>>> Dimensions and sizes:    [67] x [48]
>>> Coordinates:
>>> Number Of Attributes: 5
>>>   _FillValue :    999999986991104
>>>
>>>
>>>
>>> *  nptxy :    <ARRAY of 3216 elements>  rstd :    <ARRAY of 3216
>>> elements>  yintercept :    <ARRAY of 3216 elements>  tval :    <ARRAY of
>>> 3216 elements>*
>>>
>>> *(0)    min=-2.29406853917466e-08   max=7.240543557223994e-08*
>>>
>>>
>>>
>>> please provide some information on that.
>>> ---
>>> Kunal Bali
>>>
>>>
>>>
>>>
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>>
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