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.SH SYNOPSIS |
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.B rcollate |
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[ |
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< |
.B \-h |
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> |
.B \-h[io] |
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][ |
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+ |
.B \-w |
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][ |
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.B \-f[afdb][N]] |
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][ |
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.B \-t |
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.I \-oc |
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option. |
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By default, the file is assumed to include an information header, which |
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is copied to the standard output along with the command name, but the |
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> |
is copied to the standard output along with the command name. |
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The |
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> |
.I \-hi |
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option may be used to turn off the expectation of a header on input. |
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The |
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> |
.I \-ho |
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option turns off header output, and |
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.I \-h |
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option may be used to turn this behavior off. |
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by itself turns off both input and output headers. |
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> |
The |
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> |
.I \-w |
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option turns off non-fatal warning messages, such as unexpected EOD. |
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.PP |
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The input format is assumed to be ASCII, with three white-space separated words |
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(typically numbers) in each record. |
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and |
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.I \-fb24 |
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would all be equivalent. |
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< |
Note also that the lack of row separators in binary files means that |
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> |
Note that the lack of row separators in binary files means that |
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.I rcollate |
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does not actually do anything for binary files unless the transpose |
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– |
.I \(\-t\) |
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option is given, also. |
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.PP |
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+ |
If an input header is present, it may contain the format, number of components |
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and matrix dimensions. |
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In such cases, the |
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.I \-ic, |
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+ |
.I \-ir |
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and |
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+ |
.I \-f |
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options are not required, but will be checked against the header |
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+ |
information if provided. |
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+ |
.PP |
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The transpose option, |
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.I \-t |
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swaps rows and columns on the input. |
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.I rcollate |
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will automatically determine the number of columns based on the |
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position of the first EOL (end-of-line) character, and the number |
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of rows based on the count of records in the file. |
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of rows based on the total count of records in the file. |
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The user may override these determinations, allowing the matrix to |
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be resized as well as transposed. |
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If input and output dimensions are given, the number of input rows |
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must equal the number of output columns, |
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and the number of input columns must equal the number of output rows |
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with the |
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.I \-t |
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option. |
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For large transpose operations on Unix systems, it is much more efficient |
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> |
and the number of input columns must equal the number of output rows. |
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> |
For large transpose operations on Unix systems, it is most efficient |
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to specify the input file on the command line, rather than reading |
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from the standard input, since |
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.I rcollate |
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< |
can map the file directly into memory. |
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> |
can map the file directly into virtual memory. |
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.SH EXAMPLE |
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To change put 8760 color triplets per row in a matrix with no header: |
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.IP "" .2i |
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.I rcollate |
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command is rather inflexible when it comes to output field and record |
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separators for ASCII data. |
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It accepts any number or type of white space between input fields |
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> |
It accepts any amount of white space between fields |
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on input, but only produces spaces as field separators |
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between words and tabs as record separators. |
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> |
between words and tabs as record separators on output. |
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Output row separtors will always be an EOL, which may differ between systems. |
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.PP |
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If no options are given on the command line, or a binary file is specified |
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without a transpose, |
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.I rcollate |
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< |
issues a warning and simply copies its input to the standard output. |
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> |
issues a warning and simply copies its input to its standard output. |
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.SH "SEE ALSO" |
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cnt(1), histo(1), neaten(1), rcalc(1), rlam(1), tabfunc(1), total(1) |
