% SOM Toolbox
 % Version 2.0beta, May 30 2002
 % Copyright 1997-2000 by
 % Esa Alhoniemi, Johan Himberg, Juha Parhankangas and Juha Vesanto
 % Contributed files may contain copyrights of their own.
 % SOM Toolbox comes with ABSOLUTELY NO WARRANTY; for details
 % see License.txt in the program package. This is free software,
 % and you are welcome to redistribute it under certain conditions;
 % see License.txt for details.
 % Demos
 %            som_demo1   SOM Toolbox demo 1: basic properties
 %            som_demo2   SOM Toolbox demo 2: basic usage
 %            som_demo3   SOM Toolbox demo 3: visualization
 %            som_demo4   SOM Toolbox demo 4: data analysis
 % Creation of structs
 %              som_set   create & set (& check) values to structs
 %             som_info   print out information on a given struct  
 %      som_data_struct   create & initialize a data struct 
 %       som_map_struct   create & initialize a map struct 
 %     som_topol_struct   create & initialize a topology struct 
 %     som_train_struct   create & initialize a train struct 
 %         som_clstruct   create a cluster struct
 %            som_clset   set properties in a cluster struct
 %            som_clget   get stuff from a cluster struct
 % Struct conversion and file I/O
 %           som_vs1to2   converts a version 1.0 struct to version 2.0 struct
 %           som_vs2to1   converts a version 2.0 struct to version 1.0 struct
 %        som_read_data   reads a (SOM_PAK format) ASCII data file
 %       som_write_data   writes a SOM_PAK format codebook file
 %        som_write_cod   writes a SOM_PAK format data file
 %         som_read_cod   reads a SOM_PAK format codebook file
 % Data preprocessing
 %        som_normalize   normalize data set
 %      som_denormalize   denormalize data set 
 %    som_norm_variable   (de)normalize one variable
 %           preprocess   preprocessing GUI
 % Initialization and training functions
 %             som_make   create, initialize and train a SOM
 %         som_randinit   random initialization algorithm
 %          som_lininit   linear initialization algorithm
 %         som_seqtrain   sequential training algorithm
 %       som_batchtrain   batch training algorithm
 %              som_gui   SOM initialization and training GUI
 %       som_prototrain   a simple version of sequential training: easy to modify
 % Clustering algorithms
 %           som_kmeans   k-means algorithm (was earlier kmeans)
 %      kmeans_clusters   try and evaluate several k-means clusterings
 %           neural_gas   neural gas vector quantization algorithm
 %          som_linkage   hierarchical clustering algorithms
 %        som_cllinkage   hierarchical clustering of SOM
 %       som_dmatminima   local minima from distance (or U-) matrix
 %     som_dmatclusters   distance (or U-) matrix based clustering
 %         som_clspread   spreads clusters to unassinged map units
 %           som_cldist   calculate distances between clusters
 %         som_gapindex   gap validity index of clustering
 %             db_index   Davies-Bouldin validity index of clustering  
 % Supervised/classification algorithms
 %       som_supervised   supervised SOM algorithm
 %                 lvq1   LVQ1 algorithm
 %                 lvq3   LVQ3 algorithm
 %                  knn   k-NN classification algorithm 
 %              knn_old   k-NN classification algorithm (old version)
 % SOM error measures
 %          som_quality   quantization and topographic error of SOM
 %       som_distortion   SOM distortion measure
 %      som_distortion3   elements of the SOM distortion measure
 % Auxiliary functions
 %             som_bmus   calculates BMUs for given data vectors
 %         som_eucdist2   pairwise squared euclidian distances between vectors
 %            som_mdist   calculates pairwise distances between vectors 
 %           som_divide   extract subsets of data based on map
 %            som_label   give labels to map units
 %        som_label2num   rcodes string data labels to interger class labels 
 %        som_autolabel   automatically labels the SOM based on given data
 %      som_unit_coords   calculates coordinates in output space for map units
 %       som_unit_dists   distances in output space between map units
 %      som_unit_neighs   units in 1-neighborhood for each map unit
 %     som_neighborhood   calculates neighborhood matrix for the given map
 %        som_neighbors   calculates different kinds of neighborhoods 
 %           som_neighf   calculates neighborhood function values
 %           som_select   GUI for manual selection of map units
 %     som_estimate_gmm   create Gaussian mixture model on top of SOM
 %  som_probability_gmm   evaluate Gaussian mixture model
 %          som_ind2sub   from linear index to subscript index 
 %          som_sub2ind   from subscript index to linear index
 %          som_ind2cod   from linear index to SOM_PAK linear index 
 %          som_cod2ind   from SOM_linear index to SOM_PAK linear index 
 %             nanstats   mean, std and median which ignore NaNs
 %   som_modify_dataset   add, remove, or extract samples and components
 %         som_fillnans   fill NaNs in a data set based on given SOM
 %            som_stats   statistics of a data set
 %           som_drmake   calculate descriptive rules for a cluster
 %           som_dreval   evaluate descriptive rules for a cluster
 %         som_drsignif   rule significance measures
 % Using SOM_PAK from Matlab
 %      som_sompaktrain   uses SOM_PAK to train a map
 %           sompak_gui   GUI for using SOM_PAK from Matlab
 %          sompak_init   call SOM_PAK's initialization programs from Matlab
 %      sompak_init_gui   GUI for using SOM_PAK's initialization from Matlab
 %    sompak_rb_control   an auxiliary function for sompak_*_gui functions.
 %        sompak_sammon   call SOM_PAK's Sammon program from Matlab
 %    sompak_sammon_gui   GUI for using SOM_PAK's Sammon program from Matlab
 %         sompak_train   call SOM_PAK's training program from Matlab
 %     sompak_train_gui   GUI for using SOM_PAK's training program from Matlab 
 % Visualization
 %             som_show   basic visualization
 %         som_show_add   add labels, hits and trajectories
 %       som_show_clear   remove extra markers
 %       som_recolorbar   refresh/reconfigure colorbars
 %         som_show_gui   GUI for using som_show and associated functions
 %             som_grid   visualization of SOM grid
 %           som_cplane   component planes and U-matrices
 %         som_barplane   bar chart visualization of map
 %         som_pieplane   pie chart visualization of map
 %        som_plotplane   plot chart visualization of map
 %       som_trajectory   launches a GUI for presenting comet-trajectories 
 %       som_dendrogram   visualization of clustering tree
 %       som_plotmatrix   pairwise scatter plots and histograms
 %    som_order_cplanes   order and visualize the component planes
 %           som_clplot   plots of clusters (based on cluster struct)
 % som_projections_plot   projections plots (see som_projections)
 %       som_stats_plot   plots of statistics (see som_stats)
 % Auxiliary functions for visualization
 %                 hits   calculates hits, or sum of values for each map unit
 %             som_hits   calculates the response of data on the map
 %             som_umat   calculates the U-matrix
 %                  cca   curvilinear component analysis projection algorithm
 %              pcaproj   principal component projection algorithm
 %               sammon   Sammon's mapping projection algorithm
 %       som_connection   connection matrix for map 
 %       som_vis_coords   map unit coordinates used in visualizations
 %        som_colorcode   create color coding for map/2D data
 %         som_bmucolor   colors of the BMUs from a given map color code
 %        som_normcolor   simulate indexed colormap
 %     som_clustercolor   color coding which depends on clustering structure
 %      som_kmeanscolor   color coding according to k-means clustering
 %     som_kmeanscolor2   a newer version of the som_kmeanscolor function
 %       som_fuzzycolor   a fuzzy color coding 
 %         som_coloring   a SOM-based color coding 
 %      som_projections   calculates a default set of projections
 % Report generation stuff
 %     som_table_struct   creates a table struct
 %     som_table_modify   modifies a table struct
 %      som_table_print   print a table in various formats
 %            rep_utils   various utilities for printing report elements
 %      som_stats_table   a table of data set statistics
 %     som_stats_report   report on data set statistics
 % Low level routines used by visualization functions
 %            vis_patch   defines hexagonal and rectangular patches
 %    vis_som_show_data   returns UserData and subplot handles stored by som_show.m
 %        vis_valuetype   used for type checks 
 %         vis_footnote   adds a movable text to the current figure 
 %          vis_trajgui   the actual GUI started by som_trajectory.m 
 % vis_PlaneAxisProperties   set axis properties in visualization functions
 % vis_footnoteButtonDownFcn   callback function for vis_footnote.m
 %     vis_planeGetArgs   converts topol struct to lattice, msize argument pair
 %    vis_show_gui_comp   internal function used by som_show_gui.m
 %    vis_show_gui_tool   internal function used by som_show_gui.m
 % Other
 %           somtoolbox   this file
 %     IRIS data set (used in demos)
 %          License.txt   GNU General Public License 
 %        Copyright.txt   Copyright notice