[ncl-talk] Error subscript when using indices output from dim_pqsort to reorder another array

[YAN HUIPING]

Thank you Laura, I tried, but it does not help.
and just now I created a simple script like the example of the function dim_pqsort ,and  it came out the same errors. 

“ fatal:Illegal subscript. Subscripts must be scalar or one dimensional vectors

fatal:["Execute.c":8637]:Execute: Error occurred at or near line 12 in file test.ncl"

=========================================

begin
  
x=(/(/2,1,3/),(/4,6,5/)/)
printVarSummary(x)
print(x)
ip=dim_pqsort(x,-2)
print(x)

printVarSummary(ip)

y=(/(/2,1,3/),(/4,6,5/)/)
y=y(ip,:)

print(y)
end



> On May 29, 2020, at 6:35 AM, Laura Fowler <laura at ucar.edu> wrote:
> 
> Hi Huiping:
> may be you need to add delete(TTnew) before the line:
> 
> delete(TTnew)
> TTnew=y(ip,:,:,:);
> printMinMax(TTnew,0)
> 
> since TTnew is originally a 4-dimensional array.
> Laura
> 
> 
> 
> 
> On Thu, May 28, 2020 at 4:23 PM YAN HUIPING via ncl-talk <ncl-talk at ucar.edu <mailto:ncl-talk at ucar.edu>> wrote:
> Hi,
> I post the message
> 
> 
> the ncl script:
> 
> ==========================================
> x=PPnew
> print(num(ismissing(x)))
> y=TTnew
> ip=dim_pqsort_n(x,-2,3)
> printVarSummary(x)
> printVarSummary(ip)
> printMinMax(ip,0)
> print(dimsizes(ip))
> 
> TTnew=y(ip,:,:,:);
> printMinMax(TTnew,0)
> =========================================
> 
> (0)	missing number 0
> 
> Variable: x
> Type: float
> Total Size: 31948800 bytes
>             7987200 values
> Number of Dimensions: 4
> Dimensions and sizes:	[time | 12] x [lat | 160] x [lon | 320] x [LEV | 13]
> Coordinates: 
>             time: [20160116.875..20161216.875]
>             lat: [89.14151942646112..-89.14151942646112]
>             lon: [   0..358.875]
>             LEV: [107500..5000]
> Number Of Attributes: 7
>   _FillValue :	1e+20
>   institution :	MPIMET
>   cell_methods :	time: mean
>   table :	128
>   code :	130
>   units :	K
>   long_name :	pressure
> 
> Variable: ip
> Type: integer
> Total Size: 31948800 bytes
>             7987200 values
> Number of Dimensions: 4
> Dimensions and sizes:	[12] x [160] x [320] x [13]
> Coordinates: 
> (0)	min=0   max=12
> (0)	12
> (1)	160
> (2)	320
> (3)	13
> fatal:Illegal subscript. Subscripts must be scalar or one dimensional vectors
> 
> ====================
> 
> Y has the same dimensions as X ([time | 12] x [lat | 160] x [lon | 320] x [LEV | 13]). And there is no missing value in X, but Y has some.
> 
> 
> Thus, I think there are some bugs here. Could you please help me look into it?
> 
> Thanks,
> Huiping
> 
> 
>> On May 29, 2020, at 1:21 AM, Dennis Shea <shea at ucar.edu <mailto:shea at ucar.edu>> wrote:
>> 
>> Whenever you encounter an error, you should add print statements to help you debug the issue.
>> 
>>   printVarSummary(x)                         ; overview of source variable
>>   print("-----")                                       ; visual break
>> 
>>   ip = dim_pqsort(x,-2)                          ;; descending order
>>   printVarSummary(ip)
>>   prinyMinMax(ip, 0)
>>   print("-----") 
>> 
>>   dim_ip = dimsizes(ip)
>>   print(dim_ip)
>>   print("-----")    
>> 
>>    y=y(ip,:,:,:)
>> =============================
>> Are there grid locations that contain all missing values? 
>> 
>> 
>> 
>> On Tue, May 26, 2020 at 6:36 PM YAN HUIPING via ncl-talk <ncl-talk at ucar.edu <mailto:ncl-talk at ucar.edu>> wrote:
>> Hi,
>> I am using the function dim_pqsort to reorder an array with dimensions of (time,nlat, nlon, nlev) following the instructions https://www.ncl.ucar.edu/Document/Functions/Built-in/dim_pqsort.shtml <https://www.ncl.ucar.edu/Document/Functions/Built-in/dim_pqsort.shtml>
>> 
>> ip=dim_pqsort(x,-2);; descending order
>> y=y(ip,:,:,:)
>> 
>> However, there are error messages: “fatal:Illegal subscript. Subscripts must be scalar or one dimensional vectors”.
>> Ps: the version of NCL I used is 6.5.0
>> 
>> Could please help me on this problem?
>> 
>> Thanks,
>> Huiping
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> -- 
> !-------------------------------------------------------------------------------------------------------------
> Laura D. Fowler                                                                                       
> Mesoscale and Microscale Meteorology Division (MMM)         
> National Center for Atmospheric Research
> P.O. Box 3000, Boulder CO 80307-3000
> 
> e-mail: laura at ucar.edu <mailto:laura at ucar.edu>
> phone: 303-497-1628
> 
> !-------------------------------------------------------------------------------------------------------------

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