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Setting the locations of neurons in 3D

 

nplc Set the places of neurons related to an axis
<graphic> name of the graphic structure
-ax <axis> name of the axis: x, y or z
-f <field> data field for the locations
nplc <graphic> -ax <axis> -rm Set the neuron locations for one specified axis to 0.0

This operation sets the locations of neurons related to the x, y or z axis in three-dimensional space. Before using this command, the scale of the axis should be computed with axis (see section 7.2.7). The reserved field names som_x, som_y and som_z set the locations of neurons to the normal grid of the SOM.

Example (ex7.12): The following commands set the scales of the axes x and y to the absolute range [0,1]. Then, the locations of neurons are set according to two weights x_w and y_w. At the end, the visible layer is set to 3.

...
NDA> somtr -d gauss.dat -sout som1 -l 5
...
NDA> mkgrp grp1 -s som1
NDA> nsize grp1 -v 0.2
NDA> topo grp1 -on
NDA> axis grp1 -ax x -sca abs -min 0.0 -max 1.0
NDA> axis grp1 -ax y -sca abs -min 0.0 -max 1.0
NDA> nplc grp1 -ax x -f som1_W.x_w
NDA> nplc grp1 -ax y -f som1_W.y_w
NDA> layer grp1 -l 3
...

figure3269


next up previous contents
Next: Setting the shape of Up: Setting the graphical contents Previous: Setting the graphical contents

Anssi Lensu
Tue Jul 23 11:58:18 EET DST 2002