Create Initial SOM

Creates an initial SOM codebook file.

ArcGIS Reference

Parameters

data for SOM: The input data for the SOM. Need to determine the number of dimensions, and if using linear (lin) initialization the appropriate seed values.
topology type of map: The topology (geometry) of the self-organizing map. Hexagonal (hexa) has been preselected because the center points are all equidistant. Rectangular (rect) has a horizontal and vertical bias because diagonals are farther apart.
neighborhood type: The type of neighborhood or relationship between units in the SOM. Gaussian is selected by default, because it is most typical.
x dimension: The number of units of the SOM along the X axis.
y dimension: The number of units in the SOM along the Y axis.
initial SOM: The ouput file for the intial SOM.
initilization type: The initialization type to use for the some. Random (rand) has been selected, because it is more consistent with the method of self-organization, however linear (lin) will produce results more quickly.
random generator seed: The seed to use for the random number generator, by default the current time is used.
read buffer: The number of data lines to read at a time.

uiMapInit.mapinit(din, cout, topol, neigh, xdim, ydim, init, rand='#', buffer='#')

Creates a SOM codebook file using the specified parameters.

Note

This function makes system calls to SOM_PAK. SOM_PAK is limited to non-commercial use.

Arguments :

Arguments :	din The training data. cout The codebook to create. topol The topology of the SOM. This can be hexagonal (hexa) or rectagular (rect). neigh The neighborhood type. This can be bubble or Gaussian. xdim The number of units in the X-axis of the SOM. ydim The number of units in the Y-axis of the SOM. init The initation type. This can be random or linear. rand (optional) The random seed. This is the current time by default. buffer (optional) The size of the read buffer.
Usage :

din: The training data.
cout: The codebook to create.
topol: The topology of the SOM. This can be hexagonal (hexa) or rectagular (rect).
neigh: The neighborhood type. This can be bubble or Gaussian.
xdim: The number of units in the X-axis of the SOM.
ydim: The number of units in the Y-axis of the SOM.
init: The initation type. This can be random or linear.
rand (optional): The random seed. This is the current time by default.
buffer (optional): The size of the read buffer.

Usage :

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