Re: FW: Anual Mean Precip

You are not giving enough information for anyone to diagnose your problem.

But if you compare the output of the gpcp_1.ncl example and your output the first evidence of a problem is in the printing of the PRC variable:
The example using the downloadable data the prints:

Variable: PRC
Type: float
Total Size: 15925248 bytes
            3981312 values
Number of Dimensions: 3
Dimensions and sizes: [time | 384] x [lat | 72] x [lon | 144]
Coordinates:
            time: [ 15..11672]
            lat: [-88.75..88.75]
            lon: [1.25..358.75]
Number Of Attributes: 4
  missing_value : -99999
  _FillValue : -99999
  units : mm/day
  long_name : precipitation

whereas with your data it is printing:

> Variable: PRC
> Type: float
> Total Size: 1194393600 bytes
> 298598400 values
> Number of Dimensions: 3
> Dimensions and sizes: [360] x [720] x [1152]
> Coordinates:
> warning:Dimension (1) has not been defined
> warning:Dimension (2) has not been defined

That indicates that the dimensions and coordinates have not been associated with this variable as the example script expects, leading to a series of errors.
You may indeed have the correct latitude information somewhere but it is not associated with variable. That means your input file is different in some important way
from the example input file. It is not hard to create coordinate variables for your data manually but you need to figure out what your data actually does look like.
I suggest running ncl_filedump on your data file and examining the contents. Also please look at the mini-language manual and the Graphics manual available at this page:
http://www.ncl.ucar.edu/Document/Manuals/

Hope this helps
 -dave

On Apr 3, 2014, at 12:55 PM, Star Physicist <couragetoknowgc@hotmail.com> wrote:

>
>
> From: couragetoknowgc@hotmail.com
> To: ncl-talk@ucar.edu
> Subject: Anual Mean Precip
> Date: Thu, 3 Apr 2014 17:21:39 +0000
>
> Hi NCL users,
>
>
> I am new to NCL usage. I am trying to display climatology map from my HIRAM Model Precipitation data uding following script.
>
> gpcp_1.ncl: Overall GPCP climatology derived from the monthly product. Although I get climatology but it is not giving me areal average (one value) displayed at the top of the example display given at the following:
>
> http://www.ncl.ucar.edu/Applications/Images/gpcp_1_lg.png
>
> image
>
>
>
> View on www.ncl.ucar.edu
>
> Preview by Yahoo
>
>
> But it is giving me an error regarding latitude of my data although my data has proper latitude information. The error is as follows:
>
> ******************************
>
> ncl Precip_Tseries.ncl 78125, 346.09375, 346.40625, 346.71875,
> Copyright (C) 1995-2011 - All Rights Reserved
> University Corporation for Atmospheric Research
> NCAR Command Language Version 6.0.0
> The use of this software is governed by a License Agreement.
> See http://www.ncl.ucar.edu/ for more details.
>
> Variable: PRC
> Type: float
> Total Size: 1194393600 bytes
> 298598400 values
> Number of Dimensions: 3
> Dimensions and sizes: [360] x [720] x [1152]
> Coordinates:
> warning:Dimension (1) has not been defined
> warning:Dimension (2) has not been defined
>
> Variable: prc_clm
> Type: float
> Total Size: 39813120 bytes
> 9953280 values
> Number of Dimensions: 3
> Dimensions and sizes: [month | 12] x [720] x [1152]
> Coordinates:
> month: [0..11]
> Number Of Attributes: 2
> time_op_ncl : Climatology: 30 years
> info : function clmMonLLT: contributed.ncl
> fatal:Variable (lat) is undefined
> fatal:Execute: Error occurred at or near line 41 in file Precip_Tseries.ncl
>
> fatal:Variable (clat) is undefined
> fatal:Execute: Error occurred at or near line 42 in file Precip_Tseries.ncl
>
> fatal:Variable (prcAvg) is undefined
> fatal:Execute: Error occurred at or near line 82 in file Precip_Tseries.ncl
>
> (0) check_for_y_lat_coord: Warning: Data either does not contain a valid latitude coordinate array or doesn't contain one at all.
> (0) A valid latitude coordinate array should have a 'units' attribute equal to one of the following values:
> (0) 'degrees_north' 'degrees-north' 'degree_north' 'degrees north' 'degrees_N' 'Degrees_north' 'degree_N' 'degreeN' 'degreesN' 'deg north'
> (0) check_for_lon_coord: Warning: Data either does not contain a valid longitude coordinate array or doesn't contain one at all.
> (0) A valid longitude coordinate array should have a 'units' attribute equal to one of the following values:
> (0) 'degrees_east' 'degrees-east' 'degree_east' 'degrees east' 'degrees_E' 'Degrees_east' 'degree_E' 'degreeE' 'degreesE' 'deg east'
> yes? sp vi Precip_Tseries.ncl
>
> *****************************
>
>
> Thanks,
>
>
> Dogar
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Received on Thu Apr 03 14:13:58 2014