[R] How Aggegate Data in R

["Xavier Giovanni Ordóñez Camacho"]

Hello:

When I use SPSS I execute the AGGREGATE DATA comand for the next data:

2112141123212213212213334
3143244113442312121213344
2114141123112214212113344
2112211122212413421213221
3114444123442414343413344
2312231223212222323223322
2143241123212313131213234
2113241113212313222213333
2113141123112214212113344
2114141123412111114413344
2113211122342314222313234
2114141123112414212113344
2114241123412414422313334
2343341333323233333343322
2213241223212322222223333
3113244123342212232312334
2113241123342213232313334
2114141123112214222113334
.
.
.
.

The syntax is:

AGGREGATE
  /OUTFILE='C:\Documents and Settings\Corazón\Mis documentos\copia.sav'
  /BREAK=i1 i2 i3 i4 i5 i6 i7 i8 i9 i10 i11 i12 i13 i14 i15 i16 i17 i18 i19 i20 i21 i22 i23 i24 i25
  /N_BREAK=N.

The results is:

1112241123312213222443444  1
2111141123112212312313334  1
2111141123112414212113344  2
2111241123112311124312231  1
2111341122112111412113341  1
2111341123312213312413334  1
2112141123212213212213334  1
2112211122212413421213221  1
2112241113312313334313333  1
2112341123312313434313331  1
2113141123112212414113334  1
2113141123112214212113344  2
2113141123112312212113244  1
2113141123112314312113344  1
2113141123112412212113334  1
.
.
.

Where the last column corresponds to count of cases present in the data.
I need to obtain similar results in R, but I do not know. Please,
Could any one suggest how to make this with R?

Thanks in advance,


Xavier

=======================
Xavier G. Ordoñez
Doctoral Student
Facultad de Educacion
Departamento MIDE
Universidad Complutense de Madrid
C/ Rector Royo Villanova s/n
28040 - Madrid
Spain

Tel: +34-913946140