[ncl-talk] query ( CONVERSION ASCII TO NetCDF)

[Karin Meier-Fleischer]

Hi Kunal,

could you provide the data file and your script. 

Bye,
Karin


Am 23.09.2014 um 19:05 schrieb Kunal Bali <kunal.bali9 at gmail.com>:

> Dear NCL users
> 
> I tried previous mail scripts for converting ASCII to netcdf format , the file is generating but its without data points.Only variable names generating. 
> 
> Kunal Bali
> Research Scholar 
> Radio & Atmospheric Science Division 
> CSIR - National Physical Laboratory
> New Delhi - 110012
> 
> 
> 
> 
> 
> 
> On Tue, Sep 23, 2014 at 1:28 PM, Karin Meier-Fleischer <meier-fleischer at dkrz.de> wrote:
> Hi Kunal,
> 
> the answer was given in an earlier mail:
> 
> 1. read the ASCII data variable, lat and lon
> 2. create a output file:                         netcdf = addfile("simple.nc","c")
> 3. write your data variable to the output file:  ncdf->values = values
> 
> 
> Please read the 'output to netcdf' examples for more details:
> http://ncl.ucar.edu/Applications/o-netcdf.shtml
> 
> Bye,
> Karin
> 
> Am 23.09.14 07:04, schrieb Kunal Bali:
>> Dear NCL users
>> 
>> I am still not getting how to do the conversion from ASCII to netcdf ??
>> 
>> Kunal Bali
>> Research Scholar 
>> Radio & Atmospheric Science Division 
>> CSIR - National Physical Laboratory
>> New Delhi - 110012
>> 
>> 
>> 
>> 
>> 
>> 
>> On Mon, Sep 22, 2014 at 7:35 PM, Yuqiang Zhang <yuqiangzhang.thu at gmail.com> wrote:
>> Hi Kunal,
>> 
>>  
>> In line 30, “ncl 30> TotCH4_A = data(:,2) “. You variable “TotCH4_A” is only assigned one dimension’s value, so you can’t assign two dimension through line 33 & 34.
>> 
>>  
>> Regards,
>> 
>> Yuqiang
>> 
>>  
>> From: ncl-talk-bounces at ucar.edu [mailto:ncl-talk-bounces at ucar.edu] On Behalf Of Kunal Bali
>> Sent: Monday, September 22, 2014 8:53 AM
>> To: Karin Meier-Fleischer
>> Cc: ncl-talk at ucar.edu
>> Subject: Re: [ncl-talk] query ( CONVERSION ASCII TO NetCDF)
>> 
>>  
>> Dear NCL user
>> 
>> I tried this script from NCL but still getting error
>> 
>> 
>> ncl 28> Longitude = data(:,1)
>> ncl 29> Latitude = data(:,0)  
>> ncl 30> TotCH4_A = data(:,2)  
>> ncl 31> ncdf = addfile("/home/kunal/simple1.nc","c")
>> ncl 32> filedimdef(ncdf,"time",-1,True)              
>> ncl 33> TotCH4_A!0 = "Latitude"
>> ncl 34> TotCH4_A!1 = "Longitude"
>> fatal:Variable (TotCH4_A) has (1) dimensions can not write to dimension (1)
>> fatal:["Execute.c":8565]:Execute: Error occurred at or near line 34
>> 
>> 
>> 
>> Kunal Bali
>> 
>> Research Scholar
>> 
>> Radio & Atmospheric Science Division
>> 
>> CSIR - National Physical Laboratory
>> 
>> New Delhi - 110012
>> 
>>  
>>  
>>  
>>  
>>  
>> On Mon, Sep 22, 2014 at 5:32 PM, Karin Meier-Fleischer <meier-fleischer at dkrz.de> wrote:
>> 
>> Hi Kunal,
>> 
>>  
>> Please, take a look at the 'output netcdf' examples page, method_1
>> 
>>  
>> http://ncl.ucar.edu/Applications/method_1.shtml
>> 
>> Try this:
>> 
>>  
>>  
>> lat = data(:,0)
>> 
>> lat = data(:,1)
>> 
>> values= data(:,2)
>> 
>> system("/bin/rm -f simple.nc") ; remove any pre-existing file 
>> 
>> ncdf = addfile("simple.nc" ,"c") ; output netCDF file
>> filedimdef(ncdf,"time",-1,True) ; recommended
>> values!0 = "lat"
>> values!1 = "lon"
>> values&lat = lat
>> values&lon = lon 
>> ncdf->values = values
>>  
>> Bye, Karin
>> 
>>  
>> 
>> Am 22.09.2014 um 11:40 schrieb Kunal Bali <kunal.bali9 at gmail.com>:
>> 
>> Dear NCL users
>> 
>> I want to convert ASCII to .nc file format. Could any one please provides me the link for this query or give any detail about this ??
>> 
>> I have data in 3 column ( Latitude Longitude Values)
>> 
>> More Detail
>> 
>> Variable: data
>> Type: float
>> Total Size: 777600 bytes
>>             194400 values
>> Number of Dimensions: 2
>> Dimensions and sizes:    [64800] x [3]
>> Coordinates: 
>> Number Of Attributes: 1
>>   _FillValue :    9.96921e+36
>> 
>> 
>> So is there any ways to convert ASCII to netcdf format ???
>> 
>> Thank You
>> 
>> 
>> Kunal Bali
>> 
>> Research Scholar
>> 
>> Radio & Atmospheric Science Division
>> 
>> CSIR - National Physical Laboratory
>> 
>> New Delhi - 110012
>> 
>>  
>>  
>>  
>>  
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____________________________________
Dipl. Geophys. Karin Meier-Fleischer
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