1DBROWACCUMULATE(1) User Contributed Perl Documentation DBROWACCUMULATE(1)
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6 dbrowaccumulate - compute a running sum of a column
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9 dbrowaccumulate [-C increment_constant] [-I initial_value] [-c
10 increment_column] [-N new_column_name]
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13 Compute a running sum over a column of data, or of a constant
14 incremented per row, perhaps to generate a cumulative distribution.
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16 What to accumulate is specified by "-c" or "-C".
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18 The new column is named by the "-N" argument, defaulting to "accum".
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21 -c or --column COLUMN
22 Accumulate values from the given COLUMN. No default.
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24 -C or --constant K
25 Accumulate the given constant K for each row of input. No default.
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27 -I or --initial-value I
28 Start accumulation at value I. Defaults to zero.
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30 -N or --new-name N
31 Name the new column N. Defaults to "accum".
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33 This module also supports the standard fsdb options:
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35 -d Enable debugging output.
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37 -i or --input InputSource
38 Read from InputSource, typically a file name, or "-" for standard
39 input, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue
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42 -o or --output OutputDestination
43 Write to OutputDestination, typically a file name, or "-" for
44 standard output, or (if in Perl) a IO::Handle, Fsdb::IO or
45 Fsdb::BoundedQueue objects.
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47 --autorun or --noautorun
48 By default, programs process automatically, but Fsdb::Filter
49 objects in Perl do not run until you invoke the run() method. The
50 "--(no)autorun" option controls that behavior within Perl.
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52 --help
53 Show help.
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55 --man
56 Show full manual.
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59 Input:
60 #fsdb diff
61 0.0
62 00.000938
63 00.001611
64 00.001736
65 00.002006
66 00.002049
67 # | /home/johnh/BIN/DB/dbrow
68 # | /home/johnh/BIN/DB/dbcol diff
69 # | dbsort diff
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71 Command:
72 cat DATA/kitrace.fsdb | dbrowaccumulate -c diff
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74 Output:
75 #fsdb diff accum
76 0.0 0
77 00.000938 .000938
78 00.001611 .002549
79 00.001736 .004285
80 00.002006 .006291
81 00.002049 .00834
82 # | /home/johnh/BIN/DB/dbrow
83 # | /home/johnh/BIN/DB/dbcol diff
84 # | dbsort diff
85 # | /home/johnh/BIN/DB/dbrowaccumulate diff
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88 Fsdb, dbrowenumerate.
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91 Copyright (C) 1991-2018 by John Heidemann <johnh@isi.edu>
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93 This program is distributed under terms of the GNU general public
94 license, version 2. See the file COPYING with the distribution for
95 details.
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99perl v5.32.0 2020-11-16 DBROWACCUMULATE(1)