[ncl-install] Question

[Karin Meier-Fleischer]

This was a question about NCL, so you have to send it to the ncl-talk mailing list. 
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Bye,
Karin

> Am 12.05.2015 um 17:39 schrieb Karin Meier-Fleischer <meier-fleischer at dkrz.de>:
> 
> Hi Najib,
> 
> you have a typo in the second addfile call. See below.
> 
> 
>> Am 12.05.2015 um 17:09 schrieb Najib Yusuf <najibgal at yahoo.com <mailto:najibgal at yahoo.com>>:
>> 
>> Hello,
>> I am a new ncl learner, and i am trying to make a plot from an ascii data file but i am getting error messages, kindly guide me, this is how it looks like;
>> 
>> najib at UbuntuVaio:~$ ncl
>>  Copyright (C) 1995-2012 - All Rights Reserved
>>  University Corporation for Atmospheric Research
>>  NCAR Command Language Version 6.1.0
>>  The use of this software is governed by a License Agreement.
>>  See http://www.ncl.ucar.edu/ <http://www.ncl.ucar.edu/> for more details.
>> ncl 0> dir = "/home/najib/Desktop/"
>> ncl 1> filen = "TRODAN.dat"
>> ncl 2> z1 = asciiread(dir+filen,(/3326/),"string")
>> ncl 3> printVarSummary(z1)
>> 
> 
> here your file is called  /home/najib/Desktop/TRODAN.dat
> 
>> Variable: z1
>> Type: string
>> Total Size: 26608 bytes
>>             3326 values
>> Number of Dimensions: 1
>> Dimensions and sizes:    [3326]
>> Coordinates: 
>> Number Of Attributes: 1
>>   _FillValue :    missing
>> ncl 4> new_str = str_split_csv(z1, ",", 1)
>> ncl 5>  printVarSummary(new_str)
>> 
>> Variable: new_str
>> Type: string
>> Total Size: 266080 bytes
>>             33260 values
>> Number of Dimensions: 2
>> Dimensions and sizes:    [3326] x [10]
>> Coordinates: 
>> Number Of Attributes: 1
>>   _FillValue :    missing
>> ncl 6> _FillValue = 999
>> ncl 7> variables = new_str(0,0:9)
>> ncl 8> print(variables)
>> 
>> 
>> Variable: variables
>> Type: string
>> Total Size: 80 bytes
>>             10 values
>> Number of Dimensions: 1
>> Dimensions and sizes:    [10]
>> Coordinates: 
>> Number Of Attributes: 1
>>   _FillValue :    missing
>> (0)    Year
>> (1)    Month
>> (2)    Day
>> (3)    Hour
>> (4)    Minute
>> (5)    Second
>> (6)    UT_sec
>> (7)    Ozone_ppbv
>> (8)    Temperature_K
>> (9)    Pressure_Torr
>> ncl 9> year = stringtoint(new_str(1:3325,0))
>> ncl 10> month = stringtoint(new_str(1:3325,1))
>> ncl 11> day = stringtoint(new_str(1:3325,2))
>> ncl 12> hour = stringtoint(new_str(1:3325,3))
>> ncl 13> minute = stringtoint(new_str(1:3325,4))
>> ncl 14> second = stringtoint(new_str(1:3325,5))
>> ncl 15> UT_sec = stringtofloat(new_str(1:3325,6))
>> ncl 16> ozone_ppbv = stringtofloat(new_str(1:3325,7))
>> ncl 17> Temp_K = stringtofloat(new_str(1:3325,8))
>> ncl 18> Press_Pa = stringtofloat(new_str(1:3325,9))
>> ncl 19> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
>> ncl 20> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
>> ncl 21> begin
>> ncl 22>f = addfile ("$NCARG_ROOT/lib/ncarg/data/ascii/TRODAN.dat.asc","r“)
> 
> here you try to open a file called  $NCARG_ROOT/lib/ncarg/data/ascii/TRODAN.dat.asc which doesn’t exist.
> Shouldn’t it be  
> 
> f = addfile("/home/najib/Desktop/TRODAN.dat“,“r")
> 
>> ncl 23> u = f->U
>> ncl 24> wks = gsn_open_wks ("ps","xy")
>> ncl 25> res = True
>> ncl 26> rest at tiMainString = "Basic XY plot"
>> ncl 27> plot = gsn_csm_xy (wks,u&lat,u(1,{3325}),res)
>> ncl 28> end
>> fatal:["FileSupport.c":2758]:_NclFindFileExt: Requested file <$NCARG_ROOT/lib/ncarg/data/ascii/TRODAN.dat.asc> or <$NCARG_ROOT/lib/ncarg/data/ascii/TRODAN.dat> does not exist
>> 
> 
> This error message says exactly what happened.
> 
> 
>> fatal:["FileSupport.c":3052]:($NCARG_ROOT/lib/ncarg/data/ascii/TRODAN.dat.asc) has no file extension, can't determine type of file to open
>> fatal:file (f) isn't defined
>> fatal:["Execute.c":7741]:Execute: Error occurred at or near line 23
>> 
> 
> And it tells you also at which line of your script you have to look.
> 
> 
> Bye,
> Karin
> 




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