[ncl-talk] read ascii file line by line

[Kyle Griffin]

A quick NCL search for 'read ascii' reveals a function that can do what you
want.

https://www.ncl.ucar.edu/Document/Functions/Built-in/asciiread.shtml

I use this function for exactly this purpose, and combine with
str_get_field as necessary to parse out values from columns.

Be sure to read the part to understand the dimension setting to ensure the
file is read by individual lines.


Kyle

----------------------------------------
Kyle S. Griffin
Department of Atmospheric and Oceanic Sciences
University of Wisconsin - Madison
Room 1407
1225 W Dayton St, Madison, WI 53706
Email: ksgriffin2 at wisc.edu

On Thu, Nov 19, 2015 at 6:09 AM, Marston Johnston <marston.johnston at gu.se>
wrote:

> Hi,
>
> It is possible to read an ascii file line by line with NCL?
> I have a file with header information but some rows have
> fewer columns than others. The causes NCL to misread the file since it
> doesn’t pad the missing columns with 0s.
> Here’s and example of the file:
>
> 90 000001 017
> 13 000001 001 1989010118 1989 01 01 18  -22.50   76.50  97321.5 -999.999
> -999.999
> 13 000001 002 1989010200 1989 01 02 00  -15.00   78.00  96884.5 -999.999
> -999.999
> 13 000001 003 1989010206 1989 01 02 06   -9.00   78.00  96481.6 -999.999
> -999.999
> 13 000001 004 1989010212 1989 01 02 12    9.00   78.00  95855.4 -999.999
> -999.999
> 13 000001 005 1989010218 1989 01 02 18   10.50   79.50  95618.0 -999.999
> -999.999
> 13 000001 006 1989010300 1989 01 03 00   10.50   79.50  95862.3 -999.999
> -999.999
> 13 000001 007 1989010306 1989 01 03 06   24.00   79.50  96049.5 -999.999
> -999.999
> 13 000001 008 1989010312 1989 01 03 12   25.50   79.50  96741.5 -999.999
> -999.999
> 13 000001 009 1989010318 1989 01 03 18   30.00   76.50  97431.5 -999.999
> -999.999
> 13 000001 010 1989010400 1989 01 04 00   37.50   75.00  98005.7 -999.999
> -999.999
> 13 000001 011 1989010406 1989 01 04 06   51.00   78.00  98294.2 -999.999
> -999.999
> 13 000001 012 1989010412 1989 01 04 12   52.50   78.00  98539.0 -999.999
> -999.999
> 13 000001 013 1989010418 1989 01 04 18   54.00   78.00  98684.7 -999.999
> -999.999
> 13 000001 014 1989010500 1989 01 05 00   52.50   78.00  98801.7 -999.999
> -999.999
> 13 000001 015 1989010506 1989 01 05 06   49.50   78.00  98859.1 -999.999
> -999.999
> 13 000001 016 1989010512 1989 01 05 12   49.50   78.00  99021.5 -999.999
> -999.999
> 13 000001 017 1989010518 1989 01 05 18   60.00   76.50  98882.8 -999.999
> -999.999
> 90 000002 020
> 13 000002 001 1989010100 1989 01 01 00   49.50   51.00  98664.4 -999.999
> -999.999
> 13 000002 002 1989010106 1989 01 01 06   57.75   53.25  98746.9 -999.999
> -999.999
>
>
> Any help is appreciated,
> /Marston
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