[Databionic-ESOM-User] Problem when integrating ESOM with Matlab

[Yok Y. <yo...@gm...>]

Hi,

I am trying to integrate ESOM with my matlab problem.
However, it is not successful.
Hope to seek your help in this.
Thanks in advance.

The errors that shows up when I try to run esom_demo.m are as follows:
1)
>> esom_demo
??? Undefined command/function 'tail'.

Error in ==> addfileext at 29
if ~strcmp(tail(filename,length(ext)),ext)

Error in ==> savecls at 32
filename = addfileext(filename,'.cls');

Error in ==> esom_demo at 54
savecls('demo.cls', key, cls);

2)
??? Undefined command/function 'head'.

Error in ==> loadlrnfast at 60
    tokens = strread(deblank(head(line,-1)),'%s\t');

Error in ==> loadlrn at 56
        [data,names,defined] = loadlrnfast(filename);

Error in ==> esom_train at 144
    data = loadlrn([prefix, '.lrn']);

Error in ==> esom_demo at 61
[wts, bm, umx] = esom_train(NOData, prefix, epochs, rows, columns, grid,
radius, learn, algorithm);

regards,
yok yen