Contents - Index

DATA>JOIN

PURPOSE Combine UCINET data files to form a single data file. Combines sets of single matrices into a new matrix by merging all rows or all columns.  Also combines sets of single matrices or multi-relational matrices into one multi-relational matrix.


DESCRIPTION Combines sets of single matrices, with equal columns, row wise into a larger matrix.  If A1, A2 ... AN  are all matrices with  R1, R2, ... RN  rows respectively and  C  columns then these are merged into the  R1 + R2 +...+ RN by C matrix (A1  A2  ...  AN) transpose.

Also combines sets of single matrices, with equal rows, column wise into a larger matrix.  If A1, A2, ... AN are all matrices with  R  rows and C1, C2, ... CN columns respectively then these are merged into the R by C1 + C2 + CN matrix (A1  A2  ...  AN).

Certain UCINET routines permit the analysis of multiple relations on the same set of actors.  This routine can create a single data file which brings together all the relevant networks or matrices and makes them suitable for analysis.


PARAMETERS
Files selected:
Names of datasets each containing one or more matrices. The names should be entered in the order required in the merged data set. To enter a file, highlight one or more files in the Possible Files and click on the > button and they will be moved across. Clicking on < moves the files back. All possible files can be moved across by clicking on >> or <<. To select more than one file press Ctrl and then click. The files will be placed in the order they are selected.
  
Dims to join (Default = Rows)   
Defines which method is to be used. 
Choices are: 
   
Rows
Matrices combine row-wise creating extra rows. Each matrix must be a single relation with an equal number of columns.  

Columns 
Matrices combine column-wise creating extra columns. Each matrix must be a single relation with an equal number of rows.  

Matrices 
Matrices appended as additional matrices or relations. Networks must all have the same dimensions.  
   

Destination filename (Default = 'Joined')
Name of the file which will contain merged dataset.


LOG FILE The merged data set with appropriate labels.

If Rows has been selected and the original matrices do not have row labels then the new row labels are of the form i-j indicating that the row was formed from row j of matrix i.

If Columns has been selected then the new columns are labeled in a similar way to Row labels described above.

If Matrices has been selected then each relation is numbered sequentially.


TIMING Linear.

COMMENTS None.

REFERENCES None.