[ncl-talk] Error with lonFlip

[Ipsita Putatunda]

Hi Dennis,
The output of my script (attached herewith) is coming as below:
***************************************
Variable: rl
Type: float
Total Size: 221184000 bytes
            55296000 values
Number of Dimensions: 4
Dimensions and sizes:    [ncl_join | 20] x [ncl0 | 6] x [LAT | 320] x [LON
| 1440]
Coordinates:
            LAT: [-40..40]
            LON: [ 0..360]
Number Of Attributes: 1
  _FillValue :    9.96921e+36

Variable: rflip
Type: float
Total Size: 221184000 bytes
            55296000 values
Number of Dimensions: 4
Dimensions and sizes:    [ncl_join | 20] x [ncl0 | 6] x [LAT | 320] x [LON
| 1440]
Coordinates:
            LAT: [-40..40]
            LON: [-179.8749..179.8749]
Number Of Attributes: 2
  _FillValue :    9.96921e+36
  lonFlip :    longitude coordinate variable has been reordered via lonFlip

Variable: rh
Type: float
Total Size: 2459520 bytes
            614880 values
Number of Dimensions: 4
Dimensions and sizes:    [ncl_join | 20] x [ncl0 | 6] x [LAT | 42] x [LON |
122]
Coordinates:
            LAT: [-19.9373..-9.655172]
            LON: [-19.76373..10.25712]
Number Of Attributes: 2
  lonFlip :    longitude coordinate variable has been reordered via lonFlip
  _FillValue :    9.96921e+36

Variable: rr
Type: float
Total Size: 122976 bytes
            30744 values
Number of Dimensions: 3
Dimensions and sizes:    [ncl0 | 6] x [LAT | 42] x [LON | 122]
Coordinates:
            LAT: [-19.9373..-9.655172]
            LON: [-19.76373..10.25712]
Number Of Attributes: 3
  _FillValue :    9.96921e+36
  lonFlip :    longitude coordinate variable has been reordered via lonFlip
  average_op_ncl :    dim_avg_n over dimension(s): ncl_join
warning:_NhlCreateSplineCoordApprox: Attempt to create spline approximation
for X axis failed: consider adjusting trXTensionF value
warning:IrTransInitialize: error creating spline approximation for
trXCoordPoints; defaulting to linear
***********************************************

Thanks,
Ipsita

On Thu, Jun 14, 2018 at 11:22 PM, Dennis Shea <shea at ucar.edu> wrote:

> Without knowing the 'structure' of the original variable, it is hard to
> offer any help.
>
> As ncl-talk suggests, the user should **always include* t*he output from *printVarSummary
> *of the original variable.
>
>   rl=f[:]->rh                          ; do *not* use (:,:,:,:) when
> importing entire variable; it is inefficient
>   *printVarSummary(rl)*
>   rflip=lonFlip(rl)
>
>
> *printVarSummary(rflip)*  rh=rflip(:,:,80:121,640:761); [-20S to -10S,
> 20W to 10E]
>
>   lat=rh&LAT
>   lon=rh&LON
>
>   rh&LAT at units = "degrees north"
>   rh&LON at units = "degrees east"
>   *printVarSummary(rh)*
>   rr=dim_avg_n_Wrap(rh,0)
>   *printVarSummary(rr)*
>
>
> On Thu, Jun 14, 2018 at 4:57 AM, Ipsita Putatunda <
> ipsita.putatunda at gmail.com> wrote:
>
>> Dear all,
>> I want to plot a region [10S to 20S;20W to 10E] over South Atlantic, my
>> script is attached herewith, which is giving warning message like below-
>>
>> *****************************************
>> warning:_NhlCreateSplineCoordApprox: Attempt to create spline
>> approximation for X axis failed: consider adjusting trXTensionF value
>> warning:IrTransInitialize: error creating spline approximation for
>> trXCoordPoints; defaulting to linear
>> ********************************************
>> Please help me in this issue. Any suggestions will be appreciated.
>>
>> Thanks in advance,
>> Ipsita
>>
>>
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>>
>>
>
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