man/man1/rsplit.1

.\" RCSid "$Id: rsplit.1,v 1.1 2019/07/05 00:20:57 greg Exp $"
.TH RSPLIT 1 7/8/97 RADIANCE
.SH NAME
rsplit - splits standard input into multiple output files or streams
.SH SYNOPSIS
.B rsplit
[
.B \-tS
][
.B \-ih
][
.B \-iH
][
.B \-oh
][
.B \-oH
][
.B \-oaN
|
.B \-ofN
|
.B \-odN
|
.B \-ocN
|
.B \-oiN
|
.B \-owN
|
.B \-obN
][
.B \-f
][
.B \-a
][
.B "\-on M"
]
output1 [options] output2 ..
.SH DESCRIPTION
.I Rsplit
writes lines or fields from the standard input to one or more output
streams.
By default, fields are separated by a
newline character, but the terminator can be changed using the
.I \-t
option.
Different separators may be given for different fields by specifying
additional
.I \-t
options in between each output.
Note that there is no space between this option and its argument.
.PP
An output is either a file or a command.
If an output file exists, it will not be overwritten unless the
.I \-f
option is given, or it is being appended using the
.I \-a
option.
Commands are given in quotes, and begin with an exclamantion point ('!').
.PP
The
.I \-oa
option may be used to specify ASCII data (the default), or the
.I \-of
option may be used to indicated binary IEEE 32-bit floats.
Similarly, the
.I \-od
and
.I \-oi
options may be used to indicate binary 64-bit doubles or integer words,
respectively.
The
.I \-ow
option specifies 2-byte short words, and the
.I \-ob
option specifies bytes.
If a number immediately follows any of these options, then it
indicates that multiple such values are expected for each record.
For example,
.I \-of3
indicates three floats per output record for the next named output.
In the case of the
.I \-oa
option, no number writes one line or field per stream, and numbers
greater than zero write multiple fields at a time to the same stream.
For binary output formts, no number implies one value per output.
The default tab separator
is set to the empty string for binary output streams.
.PP
These options may be interspersed with output specifications,
indicating different data to draw from the different files.
.PP
If a
.I \-on
option is given with a positive integer argument, this will be the
maximum number of records that will be written by
.I rsplit.
.PP
A hyphen ('-') by itself can be used to indicate the standard
output, and may appear multiple times.
Results will be unpredictable if the standard output is specified
in this way
and any of the command outputs also writes to their standard output.
At most, one command may reliably write to its standard output.
.PP
The
.I \-ih
option tells
.I rsplit
to expect a Radiance header on its input.
The
.I \-iH
option says to expect a resolution string for an image or similar.
The
.I \-x
and
.I \-y
options may alternatively be used to specify the input dimensions.
The
.I \-oh
option tells
.I rsplit
to produce a Radiance header on the next output stream.
The
.I \-oH
option will write a resolution string.
These options toggle the associated mode on and off,
so it is possible to have one output include a header or
resolution string and not the next by specifying the option(s) again.
Neither
.I \-oh
nor
.I \-oH
may be used with the append mode ('-a').
.SH EXAMPLE
To alternate 5 lines between two output files:
.IP "" .2i
rsplit -oa5 output1.txt output2.txt < input.txt
.PP
To send the first of each double precision triplet to one file, and the second
and third to a second file, stopping after 500 triplets:
.IP "" .2i
rsplit -on 500 -od firstvals.dbl -od2 followingpairs.dbl < triplets.dbl
.PP
To convey material, color and distance information from rtrace to
separate files:
.IP "" .2i
vwrays [viewspec] | rtrace [options] -x 1024 -y 768 -h+ -oMlv octree | rsplit -ih -iH -t^I mats.txt -of depth.zbf -oh -oH -of3 '!pvalue -r -df > image.hdr'
.SH AUTHOR
Greg Ward
.SH "SEE ALSO"
cnt(1), histo(1), neaten(1), rcalc(1), rlam(1), rtrace(1),
split(1), tabfunc(1), total(1)
Revision:	1.2
Committed:	Fri Jul 5 00:42:56 2019 UTC (5 years, 10 months ago) by greg
Branch:	MAIN
Changes since 1.1:	+3 -3 lines
Log Message:	Fixes
#	User	Rev	Content
1	greg	1.2	.\" RCSid "$Id: rsplit.1,v 1.1 2019/07/05 00:20:57 greg Exp $"
2	greg	1.1	.TH RSPLIT 1 7/8/97 RADIANCE
3			.SH NAME
4			rsplit - splits standard input into multiple output files or streams
5			.SH SYNOPSIS
6			.B rsplit
7			[
8			.B \-tS
9			][
10			.B \-ih
11			][
12			.B \-iH
13			][
14			.B \-oh
15			][
16			.B \-oH
17			][
18			.B \-oaN
19			\|
20			.B \-ofN
21			\|
22			.B \-odN
23			\|
24			.B \-ocN
25			\|
26			.B \-oiN
27			\|
28			.B \-owN
29			\|
30			.B \-obN
31			][
32			.B \-f
33			][
34			.B \-a
35			][
36			.B "\-on M"
37			]
38			output1 [options] output2 ..
39			.SH DESCRIPTION
40			.I Rsplit
41			writes lines or fields from the standard input to one or more output
42			streams.
43			By default, fields are separated by a
44			newline character, but the terminator can be changed using the
45			.I \-t
46			option.
47			Different separators may be given for different fields by specifying
48			additional
49			.I \-t
50			options in between each output.
51			Note that there is no space between this option and its argument.
52			.PP
53			An output is either a file or a command.
54			If an output file exists, it will not be overwritten unless the
55			.I \-f
56			option is given, or it is being appended using the
57			.I \-a
58			option.
59			Commands are given in quotes, and begin with an exclamantion point ('!').
60			.PP
61			The
62			.I \-oa
63			option may be used to specify ASCII data (the default), or the
64			.I \-of
65			option may be used to indicated binary IEEE 32-bit floats.
66			Similarly, the
67			.I \-od
68			and
69			.I \-oi
70			options may be used to indicate binary 64-bit doubles or integer words,
71			respectively.
72			The
73			.I \-ow
74			option specifies 2-byte short words, and the
75			.I \-ob
76			option specifies bytes.
77			If a number immediately follows any of these options, then it
78			indicates that multiple such values are expected for each record.
79			For example,
80			.I \-of3
81			indicates three floats per output record for the next named output.
82			In the case of the
83			.I \-oa
84			option, no number writes one line or field per stream, and numbers
85			greater than zero write multiple fields at a time to the same stream.
86			For binary output formts, no number implies one value per output.
87			The default tab separator
88			is set to the empty string for binary output streams.
89			.PP
90			These options may be interspersed with output specifications,
91			indicating different data to draw from the different files.
92			.PP
93			If a
94			.I \-on
95			option is given with a positive integer argument, this will be the
96			maximum number of records that will be written by
97			.I rsplit.
98			.PP
99			A hyphen ('-') by itself can be used to indicate the standard
100			output, and may appear multiple times.
101			Results will be unpredictable if the standard output is specified
102			in this way
103			and any of the command outputs also writes to their standard output.
104			At most, one command may reliably write to its standard output.
105			.PP
106			The
107			.I \-ih
108			option tells
109			.I rsplit
110			to expect a Radiance header on its input.
111			The
112			.I \-iH
113			option says to expect a resolution string for an image or similar.
114			The
115			.I \-x
116			and
117			.I \-y
118			options may alternatively be used to specify the input dimensions.
119			The
120			.I \-oh
121			option tells
122			.I rsplit
123			to produce a Radiance header on the next output stream.
124			The
125			.I \-oH
126			option will write a resolution string.
127			These options toggle the associated mode on and off,
128			so it is possible to have one output include a header or
129			resolution string and not the next by specifying the option(s) again.
130			Neither
131			.I \-oh
132			nor
133			.I \-oH
134			may be used with the append mode ('-a').
135			.SH EXAMPLE
136			To alternate 5 lines between two output files:
137			.IP "" .2i
138	greg	1.2	rsplit -oa5 output1.txt output2.txt < input.txt
139	greg	1.1	.PP
140			To send the first of each double precision triplet to one file, and the second
141			and third to a second file, stopping after 500 triplets:
142			.IP "" .2i
143	greg	1.2	rsplit -on 500 -od firstvals.dbl -od2 followingpairs.dbl < triplets.dbl
144	greg	1.1	.PP
145			To convey material, color and distance information from rtrace to
146			separate files:
147			.IP "" .2i
148			vwrays [viewspec] \| rtrace [options] -x 1024 -y 768 -h+ -oMlv octree \| rsplit -ih -iH -t^I mats.txt -of depth.zbf -oh -oH -of3 '!pvalue -r -df > image.hdr'
149			.SH AUTHOR
150			Greg Ward
151			.SH "SEE ALSO"
152			cnt(1), histo(1), neaten(1), rcalc(1), rlam(1), rtrace(1),
153			split(1), tabfunc(1), total(1)