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file_transpose.html
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<html>
<head>
<title>
FILE_TRANSPOSE - "Transpose" a File
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
FILE_TRANSPOSE <br> "Transpose" a File
</h1>
<hr>
<p>
<b>FILE_TRANSPOSE</b>
is a FORTRAN90 program which
creates a "transposed" copy of a file, in which, essentially, the I-th
word of the J-th line becomes the J-th word of the I-th line.
</p>
<h3 align = "center">
Usage:
</h3>
<p>
<blockquote>
<b>file_transpose</b> <i>input</i> <i>output</i>
</blockquote>
where
<ul>
<li>
<i>input</i> is the name of the input file,
</li>
<li>
<i>output</i> is the name of the output file to be created.
</li>
</ul>
</p>
<p>
For example, if the input file is:
<pre>
Apple Ball Carrot Doll
Egg Fig 1.23456, Haystack
Iodine
Joystick Kahlua Lompoc Millipede Negatory
</pre>
the transposed file will be:
<pre>
Apple Egg Iodine Joystick
Ball Fig Kahlua
Carrot 1.23456, Lompoc
Doll Haystack Millipede
Negatory
</pre>
</p>
<h3 align = "center">
Licensing:
</h3>
<p>
The computer code and data files described and made available on this
web page are distributed under
<a href = "../../txt/gnu_lgpl.txt">the GNU LGPL license.</a>
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/f_src/chrpak/chrpak.html">
CHRPAK</a>,
a FORTRAN90 library which
can work with characters and strings.
</p>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/cpp_src/cr2lf/cr2lf.html">
CR2LF</a>,
a C++ program which
reads a text file and replaces carriage returns by line feeds.
</p>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/cpp_src/crrm/crrm.html">
CRRM</a>,
a C++ program which
reads a text file and removes the carriage return character.
</p>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/cpp_src/deblank/deblank.html">
DEBLANK</a>,
a C++ program which
reads a text file and writes a copy which has no blank lines.
</p>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/cpp_src/decomment/decomment.html">
DECOMMENT</a>,
a C++ program which
makes a copy of a text file which contains no "comment" lines
(that begin with "#").
</p>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/f_src/file_merge/file_merge.html">
FILE_MERGE</a>,
is a FORTRAN90 program which
merges two sorted files.
</p>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/f_src/file_row_reverse/file_row_reverse.html">
FILE_ROW_REVERSE</a>,
a FORTRAN90 program which
makes a copy of a file in which the lines appear in reverse order.
</p>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/f_src/filum/filum.html">
FILUM</a>,
a FORTRAN90 library which
can work with information in text files.
</p>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/f_src/reformat/reformat.html">
REFORMAT</a>,
a FORTRAN90 program which
makes a copy of a file with a given number of "words" per line.
</p>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/cpp_src/reword/reword.html">
REWORD</a>,
a C++ program which
reads a text file and writes a copy which has a fixed number
of "words" per line.
</p>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/f_src/table_columns/table_columns.html">
TABLE_COLUMNS</a>,
a FORTRAN90 program which
reads a TABLE file of N points
in M dimensions and creates a new file by copying various
columns, with repetition and shuffling;
</p>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/f_src/table_columns_permute/table_columns_permute.html">
TABLE_COLUMNS_PERMUTE</a>,
a FORTRAN90 program which
reads a TABLE file where each line has M values, and permutes the columns
according to the user's prescription;
</p>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/cpp_src/uncontrol/uncontrol.html">
UNCONTROL</a>,
a C++ program which
makes a copy of a text file which contains no control characters.
</p>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/cpp_src/wrap/wrap.html">
WRAP</a>,
a C++ program which
makes a copy of a text file
in which no line is longer than a user-specified wrap length.
</p>
<p>
<a href = "http://people.sc.fsu.edu/~jburkardt/cpp_src/wrap2/wrap2.html">
WRAP2</a>,
a C++ program which
wraps long lines in a text file, but which
wraps some lines "early", so as to avoid breaking words.
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "file_transpose.f90">file_transpose.f90</a>, the source code.
</li>
<li>
<a href = "file_transpose.sh">file_transpose.sh</a>,
BASH commands to compile the source code.
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<b>PIGS</b> is a simple demonstration of the program.
<ul>
<li>
<a href = "pigs.txt">pigs.txt</a>,
a simple file of 3 lines of 4 words, 4 words, and 3 words respectively.
</li>
<li>
<a href = "pigs_transposed.txt">pigs_transposed.txt</a>,
the transposed file, containing 4 lines of 3 words, 3 words, 3 words and 2 words
respectively. Because the lines are almost all the same length, it's not hard
to read the story this way.
</li>
</ul>
</p>
<p>
<b>STORY</b> suggests that the program is not so useful when working with
ragged text.
<ul>
<li>
<a href = "story.txt">story.txt</a>,
a file containing blank lines and lines of greatly varying numbers of words.
</li>
<li>
<a href = "story_transposed.txt">story_transposed.txt</a>,
the transposed file. Because the input text was "ragged", it's not easy to
read the text now, nor would it be easy to reconstruct the original file!
</li>
</ul>
</p>
<p>
<b>MATRIX</b> illustrates how a numeric table or matrix can be transposed.
In fact, this is the application for which the FILE_TRANSPOSE program was written.
<ul>
<li>
<a href = "matrix.txt">matrix.txt</a>,
a file containing 30 lines, each containing 10 numeric values.
</li>
<li>
<a href = "matrix_transposed.txt">matrix_transposed.txt</a>,
the transposed file, with 10 lines of 30 values.
</li>
</ul>
</p>
<h3 align = "center">
List of Routines:
</h3>
<p>
<ul>
<li>
<b>MAIN</b> is the main program for FILE_TRANSPOSE.
</li>
<li>
<b>FILE_TRANSPOSE</b> makes a copy of a file with the words tranposed.
</li>
<li>
<b>GET_UNIT</b> returns a free FORTRAN unit number.
</li>
<li>
<b>S_WORD_FIND</b> finds the word of a given index in a string.
</li>
<li>
<b>TIMESTAMP</b> prints the current YMDHMS date as a time stamp.
</li>
</ul>
</p>
<p>
You can go up one level to <a href = "../f_src.html">
the FORTRAN90 source codes</a>.
</p>
<hr>
<i>
Last revised on 13 January 2012.
</i>
<!-- John Burkardt -->
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