📄 som_coloring.html

📁 Kohonen的SOM软件包
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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"><html><head><title>SOM Toolbox / som_coloring </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_coloring </H1><P><B> Col = som_coloring(sM,ncol,chaingap,dw)</B></P><PRE> SOM_COLORING Make a SOM-based coloring for given data/map. Col = som_coloring(sM,[ncol],[chaingap],[dw])   Col = som_coloring(sM,5);  som_show(sM,'color',Col);  Input and output arguments ([]'s are optional):  sM          (struct) map or data struct              (matrix) data matrix  [ncol]      (scalar) number of colors to use  [chaingap]  (scalar) size of gap in the color circle (see below),                        0.1 by default  [dw]        (scalar) 1 = use input space distances to stretch                           the color circle (default)                        0 = don't use  Col         (matrix) color for each data/codebook vector This function trains a 1-dimensional SOM using the input data (codebook of a SOM, or a set of data vectors). A color from the  color circle (see HSV function) is associated with each map unit,  and each data/codebook vector of the input data picks its color from its BMU on the 1-dimensional SOM.  If the chaingap argument == 0, the 1-dimensional map has a cylinder (in effect, a ring) topology. Otherwise, the topology is rectangular (in effect, a chain).  The colors are mapped to the 1-dimensional SOM simply by picking colors from the color circle. If chaingap>0, a slice of the color circle is removed before map units pick their colors from it. This creates a discontiuity in the coloring at the ends of the 1-dimensional SOM. If the dw argument == 0, the colors are picked from the color circle equidistantly. If not, the distances between the prototype vectors in the 1-dimensional SOM are taken into account. See also SOM_KMEANSCOLOR, SOM_KMEANSCOLOR2, SOM_FUZZYCOLOR.</PRE><p><hr><br><center>[ <a href="somtoolbox.html">SOM Toolbox online doc</a> ]</center><br><!-- Last updated: May 30 2002 --></body></html>
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