man/man1/total.1

.\" RCSid "$Id: total.1,v 1.3 2004/01/01 19:31:45 greg Exp $"
.TH TOTAL 1 2/3/95 RADIANCE
.SH NAME
total - sum up columns
.SH SYNOPSIS
.B total
[
.B \-m
][
.B \-sE
|
.B \-p
|
.B \-u
|
.B \-l
][
.B \-i{f|d}[N]
][
.B \-o{f|d}
][
.B \-tC
][
.B \-N
[
.B \-r
]]
[
file ..
]
.SH DESCRIPTION
.I Total
sums up columns of real numbers from one or more files
and prints out the result on its standard output.
.PP
By default,
.I total
computes the straigt sum of each input column, but multiplication
can be specified instead with the
.I \-p
option.
Likewise, the
.I \-u
option means find the upper limit (maximum), and
.I \-l
means find the lower limit (minimum).
.PP
Sums of powers can be computed by giving an exponent with the
.I \-s
option.
(Note that there is no space between the 
.I \-s
and the exponent.)
This exponent can be any real number, positive or negative.
The absolute value of the input is always taken before the
power is computed in order to avoid complex results.
Thus,
.I \-s1
will produce a sum of absolute values.
The default power (zero) is interpreted as a straight sum without
taking absolute values.
.PP
The
.I \-m
option can be used to compute the mean rather than the total.
For sums, the arithmetic mean is computed.
For products, the geometric mean is computed.
(A logarithmic sum of absolute values is used to avoid overflow, and 
zero values are silently ignored.)
.PP
If the input data is binary, the
.I \-id
or
.I \-if
option may be given for 64-bit double or 32-bit float values, respectively.
Either option may be followed immediately by an optional
count, which defaults to 1, indicating the number of double or float
binary values to read per record on the input file.
(There can be no space between the option and this count.)\0
Similarly, the
.I \-od
and
.I \-of
options specify binary double or float output, respectively.
These options do not need a count, as this will be determined by the
number of input channels.
.PP
A count can be given as the number of lines to read before
computing a result.
By default,
.I total
reads each file to its end before producing its result, but the
.I \-N
option (where N is a decimal integer) tells
.I total
to produce a result and reset the calculation after
every N input lines.
In addition, the
.I \-r
option can be specified to override reinitialization and thus
give a running total every N lines.
If the end of file is reached, the current total is printed
and the calculation is reset before the next file (with or without the
.I \-r
option).
.PP
The
.I \-tC
option can be used to specify the input and output tab character.
The default tab character is TAB.
.PP
If no files are given, the standard input is read.
.SH EXAMPLE
To compute the RMS value of colon-separated columns in a file:
.IP "" .2i
total -t: -m -s2 input
.PP
To produce a running product of values from a file:
.IP "" .2i
total -p -1 -r input
.SH BUGS
If the input files have varying numbers of columns, mean values
will certainly be off.
.I Total
will ignore missing column entries if the tab separator is a non-white
character, but cannot tell where a missing column should have been if
the tab character is white.
.SH AUTHOR
Greg Ward
.SH "SEE ALSO"
cnt(1), neaten(1), rcalc(1), rlam(1), tabfunc(1)
Revision:	1.4
Committed:	Thu Jun 2 04:47:26 2005 UTC (18 years, 11 months ago) by greg
Branch:	MAIN
Changes since 1.3:	+22 -1 lines
Log Message:	Added binary i/o options to total and piped output to rtcontrib
#	Content
1	.\" RCSid "$Id: total.1,v 1.3 2004/01/01 19:31:45 greg Exp $"
2	.TH TOTAL 1 2/3/95 RADIANCE
3	.SH NAME
4	total - sum up columns
5	.SH SYNOPSIS
6	.B total
7	[
8	.B \-m
9	][
10	.B \-sE
11	\|
12	.B \-p
13	\|
14	.B \-u
15	\|
16	.B \-l
17	][
18	.B \-i{f\|d}[N]
19	][
20	.B \-o{f\|d}
21	][
22	.B \-tC
23	][
24	.B \-N
25	[
26	.B \-r
27	]]
28	[
29	file ..
30	]
31	.SH DESCRIPTION
32	.I Total
33	sums up columns of real numbers from one or more files
34	and prints out the result on its standard output.
35	.PP
36	By default,
37	.I total
38	computes the straigt sum of each input column, but multiplication
39	can be specified instead with the
40	.I \-p
41	option.
42	Likewise, the
43	.I \-u
44	option means find the upper limit (maximum), and
45	.I \-l
46	means find the lower limit (minimum).
47	.PP
48	Sums of powers can be computed by giving an exponent with the
49	.I \-s
50	option.
51	(Note that there is no space between the
52	.I \-s
53	and the exponent.)
54	This exponent can be any real number, positive or negative.
55	The absolute value of the input is always taken before the
56	power is computed in order to avoid complex results.
57	Thus,
58	.I \-s1
59	will produce a sum of absolute values.
60	The default power (zero) is interpreted as a straight sum without
61	taking absolute values.
62	.PP
63	The
64	.I \-m
65	option can be used to compute the mean rather than the total.
66	For sums, the arithmetic mean is computed.
67	For products, the geometric mean is computed.
68	(A logarithmic sum of absolute values is used to avoid overflow, and
69	zero values are silently ignored.)
70	.PP
71	If the input data is binary, the
72	.I \-id
73	or
74	.I \-if
75	option may be given for 64-bit double or 32-bit float values, respectively.
76	Either option may be followed immediately by an optional
77	count, which defaults to 1, indicating the number of double or float
78	binary values to read per record on the input file.
79	(There can be no space between the option and this count.)\0
80	Similarly, the
81	.I \-od
82	and
83	.I \-of
84	options specify binary double or float output, respectively.
85	These options do not need a count, as this will be determined by the
86	number of input channels.
87	.PP
88	A count can be given as the number of lines to read before
89	computing a result.
90	By default,
91	.I total
92	reads each file to its end before producing its result, but the
93	.I \-N
94	option (where N is a decimal integer) tells
95	.I total
96	to produce a result and reset the calculation after
97	every N input lines.
98	In addition, the
99	.I \-r
100	option can be specified to override reinitialization and thus
101	give a running total every N lines.
102	If the end of file is reached, the current total is printed
103	and the calculation is reset before the next file (with or without the
104	.I \-r
105	option).
106	.PP
107	The
108	.I \-tC
109	option can be used to specify the input and output tab character.
110	The default tab character is TAB.
111	.PP
112	If no files are given, the standard input is read.
113	.SH EXAMPLE
114	To compute the RMS value of colon-separated columns in a file:
115	.IP "" .2i
116	total -t: -m -s2 input
117	.PP
118	To produce a running product of values from a file:
119	.IP "" .2i
120	total -p -1 -r input
121	.SH BUGS
122	If the input files have varying numbers of columns, mean values
123	will certainly be off.
124	.I Total
125	will ignore missing column entries if the tab separator is a non-white
126	character, but cannot tell where a missing column should have been if
127	the tab character is white.
128	.SH AUTHOR
129	Greg Ward
130	.SH "SEE ALSO"
131	cnt(1), neaten(1), rcalc(1), rlam(1), tabfunc(1)