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--- bufr.pm:bufrdump.pl_help [2010-08-12 12:03:50]
pals
+++ bufr.pm:bufrdump.pl_help [2022-05-31 09:29:31]
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-<code>
-Usage:
-      bufrdump.pl <bufr file(s)>
-          [--filter <filter file>]
-          [--param <parameter file> [--csv]]
-          [--sort | --sort_on <parameter>[-]]
-          [--lon1 x1]
-          [--lat1 y1]
-          [--lon2 x2]
-          [--lat2 x2]
-          [--tablepath <path to BUFR tables>]
-          [--help]
-Options:
-      --filter <filter file>
-                      Decode observations meeting criteria in <filter file> only
-      --param <parameter file> [--csv]
-                      Print parameters in <parameter file> only, in same order
-                      as they occur in <parameter file>. If --csv, the parameters
-                      vill be printed using the CSV (comma separated values) format
-      --sort          Sort the decoded observations on station identification;
-                      first stations with wmonr, then stations with call sign,
-                      then stations with buoy_id (others left out)
-      --sort_on <parameter>[-] Sort the decoded observations on increasing
-                      values of <parameter>, or decreasing values if a '-'
-                      follows the parameter name. Observations not containing
-                      the parameter at all will be printed lastly. E.g.
-                      --sort_on TA- will sort on decreasing temperatures
-      --lon1 x1       Decode observations with longitude >= x1 only
-      --lat1 y1       Decode observations with latitude >= y1 only
-      --lon2 x2       Decode observations with longitude <= x2 only
-      --lat2 y2       Decode observations with latitude <= y2 only
-                      x1,y1,x2,y2 should be decimal degrees
-      --tablepath <path to BUFR tables>
-                      Set path to BUFR tables (overrides ENV{BUFR_TABLES})
-      --help          Print this Usage
-    Options may be abbreviated, e.g. --h or -h for --help.
-    To avoid having to use the "--tablepath" option, you are adviced to set
-    the invironment variable BUFR_TABLES to the directory where your BUFR
-    tables are located (unless the default path provided by bufrdump.pl
-    works for you).
-    The lines in <parameter file> should be name of the parameters you want
-    to be printed. For example, if you want only station identification and
-    temperature to be printed for a BUFR SYNOP file, the <parameter file>
-    should look like this:
-      wmonr
-      call_sign
-      TA
-    If you want "parameter=value" to be printed also when value is missing
-    in BUFR message, precede the parameter name with an exclamation mark
-    (e.g. '!TA'). Missing values will then be displayed as -32767.
-    If --csv is used in conjunction with --param, all values will be printed
-    using the CSV format, with first line listing the parameters, and with
-    missing fields printed as -32767 if the parameter is marked with '!' in
-    parameter file. With the parameter file above, the listing may for
-    example start like
-      wmonr,call_sign,TA
-,,-1.5
-      ,LF5U,9.0
-    Using --filter will decode only those observations that meet at least
-    one of the BUFR descriptor criteria and all of the parameter criteria in
-    <filter file>, where the BUFR descriptor criteria should come first in
-    filter file followed by a blank line, then comes the parameter criteria
-    which should match <param> <operator> <value> where operator is one of
-    =, !=, <, <=, > and >=. An example filter file is
-      D: 001001 I2.2
-      D: 001001 I2.2 001002 I3.3
-895
-252
-      D: 001011 A9
-      LDWR
-      NN != 8
-      TA >= 5
-      TA < 9.5
-    which decodes all observations with block number 01, two other specific
-    wmo stations and one specific ship, having cloud cover different from 8
-    (but NN must be part of the message) and temperature between 5 and 9.5
-    degrees Celsius. Comment lines starting with # will be ignored.
-    Another example: the simple filter file (starting with a blank line!)
-      wmonr > 0
-    will print only those observations containing a wmonr (skipping ships).
-</code>