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table_columns_permute.html
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<html>
<head>
<title>
TABLE_COLUMNS_PERMUTE - Scale a Table Dataset
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
TABLE_COLUMNS_PERMUTE <br> Scale a Table Dataset
</h1>
<hr>
<p>
<b>TABLE_COLUMNS_PERMUTE</b>
is a FORTRAN90 program which
reads a text file, each of whose lines contains <b>COL_NUM</b>
"words" or items. It accepts a permutation from the user, and
writes out a copy of the file after permuting the columns.
</p>
<p>
For instance, suppose the file looks like this:
<pre>
# Comments look like this and are ignored.
#
cat dog horse
1 2 3
xxx yy z
</pre>
If we ran the program, and specified the permutation "2 3 1",
then the new file would be
<pre>
# Comments look like this and are ignored.
#
horse cat dog
3 1 2
z xxx yy
</pre>
Notice that the permutation information specified that column
1 should move to column 2.
</p>
<p>
The input data is treated abstractly. It is assumed to be
separated by blanks, and each item, when permuted, will also
include the initial blanks. For this reason, it's best if
the first entry of each data line is a blank, so that the
first column of data will be properly delimited after being
moved.
</p>
<h3 align = "center">
Usage:
</h3>
<p>
<dl>
<dt>
<b>table_columns_permute</b> <i>file.txt</i>
</dt>
<dd>
reads the user's data file <i>file.txt</i>,
prompts for a permutation vector from the user, and then writes
the scaled data to a file which will be called <i>file.permuted.txt</i>.
</dd>
</dl>
</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 = "../../f_src/file_transpose/file_transpose.html">
FILE_TRANSPOSE</a>,
a FORTRAN90 program which
makes a "transposed" copy of a file, in which the I-th "word" of the J-th line
becomes the J-th word of the I-th line.
</p>
<p>
<a href = "../../f_src/table_barplot_ppma/table_barplot_ppma.html">
TABLE_BARPLOT_PPMA</a>,
a FORTRAN90 program which
reads a table file and creates an ASCII PPM bargraph of the data.
</p>
<p>
<a href = "../../f_src/table_border/table_border.html">
TABLE_BORDER</a>,
a FORTRAN90 program which
can be used to add a border (of zero values) to a table file.
</p>
<p>
<a href = "../../f_src/table_columns/table_columns.html">
TABLE_COLUMNS</a>,
a FORTRAN90 program which
can extract specific columns of data
from a table file.
</p>
<p>
<a href = "../../f_src/table_delaunay/table_delaunay.html">
TABLE_DELAUNAY</a>,
a FORTRAN90 program which
computes the Delaunay triangulation of a set
of points.
</p>
<p>
<a href = "../../f_src/table_histogram/table_histogram.html">
TABLE_HISTOGRAM</a>,
a FORTRAN90 program which
can make a histogram of a set of points
stored in a table file.
</p>
<p>
<a href = "../../f_src/table_io/table_io.html">
TABLE_IO</a>,
a FORTRAN90 library which
supplies the routines
used to read the TABLE file.
</p>
<p>
<a href = "../../f_src/table_latinize/table_latinize.html">
TABLE_LATINIZE</a>,
a FORTRAN90 program which
reads a file of
points and creates a "latinized" version by adjusting the data.
</p>
<p>
<a href = "../../f_src/table_merge/table_merge.html">
TABLE_MERGE</a>,
a FORTRAN90 program
which reads a file of
points, and removes duplicates, and points that are close to each other.
</p>
<p>
<a href = "../../f_src/table_orthonormalize/table_orthonormalize.html">
TABLE_ORTHONORMALIZE</a>,
a FORTRAN90 program which
reads a file of
points and orthonormalizes the columns.
</p>
<p>
<a href = "../../f_src/table_quality/table_quality.html">
TABLE_QUALITY</a>,
a FORTRAN90 program which
reads a file of
points and computes the quality of dispersion.
</p>
<p>
<a href = "../../f_src/table_record_match/table_record_match.html">
TABLE_RECORD_MATCH</a>,
a FORTRAN90 program which
finds close records in a table file.
</p>
<p>
<a href = "../../f_src/table_scale/table_scale.html">
TABLE_SCALE</a>,
a FORTRAN90 program that
multiplies the entries of a table file
by a scale vector.
</p>
<p>
<a href = "../../f_src/table_shift/table_shift.html">
TABLE_SHIFT</a>,
a FORTRAN90 program which
can be used to shift the entries of a table file
by a shift vector.
</p>
<p>
<a href = "../../f_src/table_stats/table_stats.html">
TABLE_STATS</a>,
a FORTRAN90 program which
reads a table file and compute certain statistics.
</p>
<p>
<a href = "../../f_src/table_tet_mesh/table_tet_mesh.html">
TABLE_TET_MESH</a>,
a FORTRAN90 program which
reads a table file of 3D data, and compute a
tetrahedral mesh.
</p>
<p>
<a href = "../../f_src/table_top/table_top.html">
TABLE_TOP</a>,
a FORTRAN90 program which
reads a table file of M-dimensional data and
make a table of plots of all pairs of coordinates.
</p>
<p>
<a href = "../../f_src/table_unborder/table_unborder.html">
TABLE_UNBORDER</a>,
a FORTRAN90 program which
removes the border from a table file.
</p>
<p>
<a href = "../../f_src/table_uniform_noise/table_uniform_noise.html">
TABLE_UNIFORM_NOISE</a>,
a FORTRAN90 program which
adds a uniform noise term to the data
in a table file.
</p>
<p>
<a href = "../../f_src/table_voronoi/table_voronoi.html">
TABLE_VORONOI</a>,
a FORTRAN90 program which
computes information about
the Voronoi diagram of the points.
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "table_columns_permute.f90">table_columns_permute.f90</a>, the source code.
</li>
<li>
<a href = "table_columns_permute.sh">table_columns_permute.sh</a>,
commands to compile, link and load the source code.
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<b>TABLE7X10</b> is a file of 7 lines of text, each containing
10 columns of data. Files you may copy include:
<ul>
<li>
<a href = "table7x10.txt">table7x10.txt</a>, the original data.
</li>
<li>
<a href = "table7x10.permuted.txt">table7x10.permuted.txt</a>,
the table of data, after being permuted by the permutation
(10,9,8,7,6,5,4,3,2,1).
</li>
</ul>
</p>
<h3 align = "center">
List of Routines:
</h3>
<p>
<ul>
<li>
<b>MAIN</b> is the main program for TABLE_COLUMNS_PERMUTE.
</li>
<li>
<b>CH_CAP</b> capitalizes a single character.
</li>
<li>
<b>FILE_COLUMN_COUNT</b> counts the number of columns in the first line of a file.
</li>
<li>
<b>FILE_NAME_EXT_GET</b> determines the "extension" of a file name.
</li>
<li>
<b>FILE_NAME_EXT_SWAP</b> replaces the current "extension" of a file name.
</li>
<li>
<b>FILE_ROW_COUNT</b> counts the number of row records in a file.
</li>
<li>
<b>GET_UNIT</b> returns a free FORTRAN unit number.
</li>
<li>
<b>PERM_INVERSE3</b> produces the inverse of a given permutation.
</li>
<li>
<b>S_COPY</b> copies one string into another.
</li>
<li>
<b>S_INDEX_LAST</b> finds the LAST occurrence of a given substring.
</li>
<li>
<b>S_WORD_COUNT</b> counts the number of "words" in a string.
</li>
<li>
<b>S_WORD_PERMUTE</b> permutes the words 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 18 January 2007.
</i>
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