Re: Coordinate scripting for

[1] To use "coordinate subscripting" two conditions must be present:
      [a] the dimensions must be named. The arrays below do not have
           named dimensions.
      [b] The named dimensions must have 1D [not 2D] monotonically
            {in/de}creasing coordinates associated with each named
dimension.

      Note: These are netCDF rules and NCL adheres to the netCDF
                variable model.
[2] If you have variables that have 2d variable arrays that contain
      coordinates (like WRF XLAT and XLONG variables] you
      can not use coordinate subscripting [See 1b above ]

[3] Pls read
http://www.ncl.ucar.edu/Document/Language/cv.shtml
http://www.ncl.ucar.edu/Document/Manuals/Ref_Manual/NclVariables.shtml
Erik Noble wrote:
> Hi.
> I added a printVarSummary(v_plane) to the code to see the error more clearly.
> The error still remains (below).
>
> any suggestions?
> -erik
>
>
> Variable: v_plane
> Type: float
> Total Size: 60604 bytes
> 15151 values
> Number of Dimensions: 2
> Dimensions and sizes: [109] x [139]
> Coordinates:
> Number Of Attributes: 4
> description : v Velocity
> units : m/s
> _FillValue : -999999
> PlotLevelID : 850 hPa
> fatal:Dimension (1) of (v_plane) is not named and therefore doesn't
> have an associated coordinate variable
> fatal:Execute: Error occurred at or near line 37 in file NCL_ascii_V700.ncl
>
>
> On Dec 11, 2007 12:31 PM, Erik Noble <enoble_at_giss.nasa.gov> wrote:
>
>> Dear NCL,
>> I am trying to use coordinate subscripting to pull data from an array:
>> V = v_plane({5:15},{-30:10})
>> I am getting the error below.
>> My code is attached.
>> My I have some help?
>> Thank you for your help.
>> -Erik
>>
>>
>> Erik_at_noble:/Volumes/Data_and_Models/ncl_scripts:ncl NCL_ascii_V700.ncl
>> Copyright (C) 1995-2007 - All Rights Reserved
>> University Corporation for Atmospheric Research
>> NCAR Command Language Version 5.0.0
>> The use of this software is governed by a License Agreement.
>> See http://www.ncl.ucar.edu/ for more details.
>>
>>
>> Variable: times
>> Type: string
>> Total Size: 1948 bytes
>> 487 values
>> Number of Dimensions: 1
>> Dimensions and sizes: [487]
>> Coordinates:
>> Number Of Attributes: 2
>> description : times in file
>> _FillValue : missing
>>
>> Variable: v
>> Type: float
>> Total Size: 1636308 bytes
>> 409077 values
>> Number of Dimensions: 3
>> Dimensions and sizes: [27] x [109] x [139]
>> Coordinates:
>> Number Of Attributes: 2
>> description : v Velocity
>> units : m/s
>>
>>
>> Variable: u
>> Type: float
>> Total Size: 1636308 bytes
>> 409077 values
>> Number of Dimensions: 3
>> Dimensions and sizes: [27] x [109] x [139]
>> Coordinates:
>> Number Of Attributes: 2
>> description : u Velocity
>> units : m/s
>>
>>
>> Variable: u
>> Type: float
>> Total Size: 1636308 bytes
>> 409077 values
>> Number of Dimensions: 3
>> Dimensions and sizes: [27] x [109] x [139]
>> Coordinates:
>> Number Of Attributes: 2
>> description : u Velocity
>> units : m/s
>> fatal:Dimension (1) of (v_plane) is not named and therefore doesn't have an
>> associated coordinate variable
>> fatal:Execute: Error occurred at or near line 37 in file NCL_ascii_V700.ncl
>>
>>
>>
>> Erik_at_noble:/Volumes/Data_and_Models/ncl_scripts:
>>
>>
>>

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Received on Tue Dec 11 2007 - 11:13:31 MST