Re: Chart Plotting from GRIB-2

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 00:48:10 2012