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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"><html><head><title>SOM Toolbox / som_read_cod </title></head><body bgcolor=#f0f0f0><table border=0 width="100%" cellpadding=0 cellspacing=0><tr><td valign=baseline><font size=+2>SOM Toolbox</font></td><td valign=baseline align=center><a href="somtoolbox.html">Online documentation</td><td valign=baseline align=right><a href="http://www.cis.hut.fi/projects/somtoolbox/" target="_top">http://www.cis.hut.fi/projects/somtoolbox/</a></td></tr></table><hr><H1> som_read_cod </H1><H3> Purpose </H3><PRE> Reads a Self-Organizing Map from an ascii file in SOM_PAK format.</PRE><H3> Syntax </H3><UL><PRE> sMap = som_read_cod(filename); </PRE></UL><H3> Description </H3><PRE> This function is offered for compatibility with SOM_PAK, a SOM software package in C. It reads map files written in SOM_PAK format. The SOM_PAK map file format is as follows. The first line must contain the input space dimension, lattice type ('rect' or 'hexa'), map grid size in x-direction, map grid size in y-direction, and neighborhood function ('bubble' or 'gaussian'), in that order. The following lines are comment lines, empty lines or data lines. Each data line contains the weight vector of one map unit and its labels. From the beginning of the line, first are values of the vector components separated by whitespaces, then labels, again separated by whitespaces. The order of map units in the file are one row at a time from right to left, from the top to the bottom of the map (x-direction first, then y-direction). Comment lines start with '#'. Comment lines as well as empty lines are ignored, except if the comment line starts with '#n'. In that case the line should contain names of the vector components separated by whitespaces. In the returned map struct, several fields has to be set to default values, since the SOM_PAK file does not contain information on them. These include map shape ('sheet'), mask ([1 ... 1]), normalizations (none), trainhist (two entries, first with algorithm 'init' and the second with 'seq', both with data name 'unknown'), possibly also component names ('Var1',...). </PRE><H3> Required input parameters </H3><PRE> filename (string) the name of the input file</PRE><H3> Output arguments </H3><PRE> sMap (struct) the resulting SOM struct</PRE><H3> Examples </H3><PRE> sMap = som_read_cod('map1.cod');</PRE><H3> See also </H3><TABLE NOBORDER WIDTH=80%><TR><TD><a href="som_write_cod.html"><B>som_write_cod</B></a><TD> Writes a map struct into a file in SOM_PAK format.<TR><TD><a href="som_read_data.html"><B>som_read_data</B></a><TD> Reads data from an ascii file.<TR><TD><a href="som_write_data.html"><B>som_write_data</B></a><TD> Writes data struct into a file in SOM_PAK format.<TR><TD><a href="som_map_struct.html"><B>som_map_struct</B></a><TD> Creates map structs.</TABLE><p><hr><br><br><!-- Last updated: May 30 2002 --></body></html>⌨️ 快捷键说明
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