[ncl-talk] addfiles error in ncl

[Kyle Griffin]

Have you considered the input to addfiles? You appear to be passing the
filesize value (column 5 when you run ls -l (lower case L) in your
directory) to the NCL function. I can't imagine this is intended, as
addfiles is looking for the file name itself - but fname ends up as the
size, not the name. Even if you were getting them as names, you then run
toint(fname), which should fail if you were actually getting the names as
strings.

Try using 'ls -1 filenames*.nc' (the number one) and this should print out
all of your files in that directory with one name on each line, a format
that addfiles will read from quite well and you can avoid your use of awk.
Your current method could also work, but would require pulling a later
column in the awk command (perhaps 9?).

Consider what you actually want your 'print(fsz)' statement to output...you
do well by looking at it, but that output is showing you the problem of
trying to read the variable from a bunch of numbers and not files.


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 Wed, Nov 25, 2015 at 12:28 PM, Debasish Hazra <debasish.hazra5 at gmail.com>
wrote:

> Hi,
>
>  I am trying to read  bunch of files in ncl and at first it gave " ncl
> fatal:incorrect size for list filevar subselection" error. Followed by ncl
> examples I tried something like this :
>
>  fname = systemfunc("ls -l ../../MODIS/Monthly/AOD/*.nc | awk '{print $5}'
> ")
>        fsz = toint(fname)
>        m = addfiles(fsz,"r")
>        ListSetType (m, "join")
>
>            print(fsz)
>            printVarSummary(fsz)
>
>          mod_aod =
> m[:]->MYD08_M3_051_Optical_Depth_Land_And_Ocean_Mean_Mean
>
> which print outs and gave error as :
>
>  Variable: fsz
> Type: integer
> Total Size: 576 bytes
>             144 values
> Number of Dimensions: 1
> Dimensions and sizes:   [144]
> Coordinates:
> (0)     264160
> (1)     263836
> (2)     263836
> (3)     263836
> (4)     263836
> (5)     263836
> (6)     263836
> (7)     263836
> (8)     263836
> (9)     263836
> [SNIP]
> (133)   522664
> (134)   522664
> (135)   522664
> (136)   522664
> (137)   522664
> (138)   522668
> (139)   522668
> (140)   522668
> (141)   522668
> (142)   522664
> (143)   522664
>
> fatal:No valid instance of variable
> MYD08_M3_051_Optical_Depth_Land_And_Ocean_Mean_Mean found in file list
>
> However, ncl_filedump of this files show :
> g4.subsetted.MYD08_M3_051_Optical_Depth_Land_And_Ocean_Mean_Mean.20130701.180W_90S_180E_90N.nc
>
> shows
> title : MYD08_M3_051_Optical_Depth_Land_And_Ocean_Mean_Mean
> (180W_90S_180E_90N)
>    dimensions:
>       time = 1  // unlimited
>       lat = 180
>       lon = 360
>    variables:
>       float MYD08_M3_051_Optical_Depth_Land_And_Ocean_Mean_Mean ( time,
> lat, lon )
>
> Any help why this one is not working. Thanks.
>
> Attached is the one of the many identical files I was trying to work on.
>
> Debasish.
>
>
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