Re: Chart Plotting from GRIB-2

From: Syed Hassan Gilani <gilani.hassan_at_nyahnyahspammersnyahnyah>
Date: Wed Apr 11 2012 - 01:30:08 MDT

Hi,

I think it needs more memory to process the data..... I am able to view the
data now, tks

Best Regards,
Hassan

On Wed, Apr 11, 2012 at 2:47 PM, Syed Hassan Gilani <gilani.hassan@gmail.com
> wrote:

> Hi,
>
> Is there any file that I need to Load at the beginning? or need to chk on
> the system?
> I am using NCL V5.2.1 & still getting the same coredump error while using
> following command:
>
> hgt = f1->HGT_P0_L100_GLL0
>
> I am able to extract the coordinate values (Lat & Lon) but not able to
> extract other data.....without which I can't plot.
>
> Pls advice, tks
>
> Best Regards,
> Hassan
>
>
> On Sun, Apr 8, 2012 at 11:12 PM, Dennis Shea <shea@ucar.edu> wrote:
>
>> We have no problems under AIX.
>>
>> f1 = addfile("YHXE20KWBC011800.**grib2", "r")
>> hgt = f1->HGT_P0_L100_GLL0
>> printVarSummary(hgt)
>>
>> f2 = addfile("20120401_1800f18.**grib2" , "r")
>> t1 = f2->TMP_P0_L100_GLL0
>> printVarSummary(t1)
>>
>> t2 = f2->TMP_P0_L7_GLL0
>> printVarSummary(t2)
>>
>> u1 = f2->UGRD_P0_L100_GLL0
>> printVarSummary(u1)
>>
>> ===
>> Variable: hgt
>> Type: float
>> Total Size: 167040 bytes
>> 41760 values
>> Number of Dimensions: 2
>> Dimensions and sizes: [lat_0 | 145] x [lon_0 | 288]
>> Coordinates:
>> lat_0: [90..-90]
>> lon_0: [ 0..358.75]
>> Number Of Attributes: 13
>> center : US National Weather Service - NCEP (WMC)
>> production_status : Operational products
>> long_name : Geopotential height
>> units : gpm
>> _FillValue : 1e+20
>> grid_type : Latitude/longitude
>> parameter_discipline_and_**category : Meteorological products, Mass
>> parameter_template_discipline_**category_number : ( 0, 0, 3, 5 )
>> level_type : Isobaric surface (Pa)
>> level : 20000
>> forecast_time : 12
>> forecast_time_units : hours
>> initial_time : 04/01/2012 (18:00)
>>
>> ===
>> Variable: t1
>> Type: float
>> Total Size: 2171520 bytes
>> 542880 values
>> Number of Dimensions: 3
>> Dimensions and sizes: [lv_ISBL0 | 13] x [lat_0 | 145] x [lon_0 | 288]
>> Coordinates:
>> lv_ISBL0: [10000..85000]
>> lat_0: [90..-90]
>> lon_0: [ 0..358.75]
>> Number Of Attributes: 12
>> center : US National Weather Service - NCEP (WMC)
>> production_status : Operational products
>> long_name : Temperature
>> units : K
>> _FillValue : 1e+20
>> grid_type : Latitude/longitude
>> parameter_discipline_and_**category : Meteorological products,
>> Temperature
>> parameter_template_discipline_**category_number : ( 0, 0, 0, 0 )
>> level_type : Isobaric surface (Pa)
>> forecast_time : 18
>> forecast_time_units : hours
>> initial_time : 04/01/2012 (18:00)
>> n
>> ===
>> Variable: t2
>> Type: float
>> Total Size: 167040 bytes
>> 41760 values
>> Number of Dimensions: 2
>> Dimensions and sizes: [lat_0 | 145] x [lon_0 | 288]
>> Coordinates:
>> lat_0: [90..-90]
>> lon_0: [ 0..358.75]
>> Number Of Attributes: 13
>> center : US National Weather Service - NCEP (WMC)
>> production_status : Operational products
>> long_name : Temperature
>> units : K
>> _FillValue : 1e+20
>> grid_type : Latitude/longitude
>> parameter_discipline_and_**category : Meteorological products,
>> Temperature
>> parameter_template_discipline_**category_number : ( 0, 0, 0, 0 )
>> level_type : Tropopause
>> level : 0
>> forecast_time : 18
>> forecast_time_units : hours
>> initial_time : 04/01/2012 (18:00)
>> ===
>> Variable: u1
>> Type: float
>> Total Size: 2171520 bytes
>> 542880 values
>> Number of Dimensions: 3
>> Dimensions and sizes: [lv_ISBL0 | 13] x [lat_0 | 145] x [lon_0 | 288]
>> Coordinates:
>> lv_ISBL0: [10000..85000]
>> lat_0: [90..-90]
>> lon_0: [ 0..358.75]
>> Number Of Attributes: 12
>> center : US National Weather Service - NCEP (WMC)
>> production_status : Operational products
>> long_name : U-component of wind
>> units : m s-1
>> _FillValue : 1e+20
>> grid_type : Latitude/longitude
>> parameter_discipline_and_**category : Meteorological products,
>> Momentum
>> parameter_template_discipline_**category_number : ( 0, 0, 2, 2 )
>> level_type : Isobaric surface (Pa)
>> forecast_time : 18
>> forecast_time_units : hours
>> initial_time : 04/01/2012 (18:00)
>> n
>>
>>
>> On 4/8/12 6:33 AM, Syed Hassan Gilani wrote:
>>
>>> Hi Dennis,
>>>
>>> tks for ur reply.
>>> I don't face any problem in dumping GRIB-2 data. The problem is when I
>>> am trying to extract variable data... e.g temp. data, wind data....etc.
>>> Can advice?
>>>
>>> /(*Note: *My previous email has screenshot of command I have used and
>>> error I am receiving)/
>>> /
>>>
>>> /
>>> tks & best regards,
>>> Hassan
>>>
>>> On Sat, Apr 7, 2012 at 12:59 AM, Dennis Shea <shea@ucar.edu
>>> <mailto:shea@ucar.edu>> wrote:
>>>
>>> NCL works fine under AIX.
>>>
>>> %> uname -a
>>> AIX be1005en 3 5 00CBF2314C00
>>>
>>> We only have 6.0.0 on this machine.
>>>
>>> %> ncl -V
>>> 6.0.0
>>>
>>> %> ncl_filedump YHXE20KWBC011800.grib2 > out.YHXE20KWBC011800
>>> %> ncl_filedump 20120401_1800f18.grib2 > out.20120401_1800f18
>>>
>>> I have attached two 2 gzip'd outputs.
>>>
>>> ---
>>> As always ...
>>> make sure you have your NCARG_ROOT environment variable
>>> set correctly
>>>
>>> Cheers
>>>
>>>
>>> On 04/02/2012 09:13 PM, Syed Hassan Gilani wrote:
>>>
>>> Hi Mary,
>>>
>>> tks for your reply.
>>>
>>> My current production env is AIX v5.3.
>>> I can setup a linux env to try out using NCL v6.0 but our
>>> preference is
>>> still to make it work on AIX as the system has fail-over backup.
>>>
>>> I have uploaded two files:
>>>
>>> - YHXE20KWBC011800.grib2 (extracted from bundle of
>>> compressed
>>> grib2 files)
>>> - 20120401_1800f18.grib2 (one of the compressed
>>> grib2 files
>>> downloaded from WIFS site)
>>>
>>>
>>> both files give the same error.
>>>
>>> tks & best regards,
>>> Hassan
>>>
>>>
>>> On Tue, Apr 3, 2012 at 12:49 AM, Mary Haley <haley@ucar.edu
>>> <mailto:haley@ucar.edu>
>>> <mailto:haley@ucar.edu <mailto:haley@ucar.edu>>> wrote:
>>>
>>> Hi Hassan,
>>>
>>> I noticed you are running NCL V5.2.1. Do you have a system
>>> where you
>>> can try this with NCL V6.0.0?
>>>
>>> Meanwhile, can you also provide us with the file? Please
>>> see this
>>> for information on where to put the file:
>>>
>>> http://www.ncl.ucar.edu/__**report_bug.shtml#HowToFTP<http://www.ncl.ucar.edu/__report_bug.shtml#HowToFTP>
>>>
>>> <http://www.ncl.ucar.edu/**report_bug.shtml#HowToFTP<http://www.ncl.ucar.edu/report_bug.shtml#HowToFTP>
>>> >
>>>
>>> Thanks,
>>>
>>> --Mary
>>>
>>> On Apr 2, 2012, at 3:32 AM, Syed Hassan Gilani wrote:
>>>
>>> > Hi,
>>> >
>>> > I am trying to output the GRIB-2 variable data but ending up
>>> with
>>> following error's:
>>> > Any advice? tks
>>> >
>>> > <image.png>
>>> >
>>> > On Sun, Apr 1, 2012 at 10:07 PM, Dennis Shea <shea@ucar.edu
>>> <mailto:shea@ucar.edu>
>>> <mailto:shea@ucar.edu <mailto:shea@ucar.edu>>> wrote:
>>> > All netCDF, all GRIB, all HDF are read via the same function:
>>> addfile
>>> >
>>> http://www.ncl.ucar.edu/__**Document/Functions/Built-in/__**
>>> addfile.shtml<http://www.ncl.ucar.edu/__Document/Functions/Built-in/__addfile.shtml>
>>>
>>> <http://www.ncl.ucar.edu/**Document/Functions/Built-in/**
>>> addfile.shtml<http://www.ncl.ucar.edu/Document/Functions/Built-in/addfile.shtml>
>>> >
>>> >
>>> > f = addfile("FOO.grb", "r")
>>> > print(f) ; examine file contents
>>> >
>>> > Also, ncl_filedump can be used from the command line
>>> >
>>> > %> ncl_filedump FOO.grb | less
>>> >
>>> > Find something on the Examples page and modify as necessary
>>> > http://www.ncl.ucar.edu/__**Applications/<http://www.ncl.ucar.edu/__Applications/>
>>>
>>> <http://www.ncl.ucar.edu/**Applications/<http://www.ncl.ucar.edu/Applications/>
>>> >
>>> >
>>> > If you are new to NCL, please see the Mini-Language manual at:
>>> > http://www.ncl.ucar.edu/__**Document/Manuals/<http://www.ncl.ucar.edu/__Document/Manuals/>
>>>
>>> <http://www.ncl.ucar.edu/**Document/Manuals/<http://www.ncl.ucar.edu/Document/Manuals/>
>>> >
>>> >
>>> > Please respond only to ncl-talk@ucr.edu
>>> <mailto:ncl-talk@ucr.edu> <mailto:ncl-talk@ucr.edu
>>>
>>> <mailto:ncl-talk@ucr.edu>>
>>>
>>> > Do not include my email address.
>>> >
>>> > Good luck
>>> >
>>> >
>>> > On 3/31/12 11:48 AM, Syed Hassan Gilani wrote:
>>> > Hi,
>>> >
>>> > Is there any example on using GRIB-2 data for plotting wind or
>>> temp chart?
>>> >
>>> > Any advice or link reference will be helpful, tks
>>> >
>>> > Best Regards,
>>> > Hassan
>>> >
>>> > Sent from my iPhone
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>>>
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>>
>

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Received on Wed Apr 11 01:30:20 2012

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