Network Utility Programs

Here are a few utility programs that make it easier to work with network data. They are used to pre-process data or to quickly and easily transform it from one format to another.


For each of the programs described on this page there is a copy of the documentation in Adobe Acrobat format.
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Free2Fix is a utility program that makes preparing data files a lot easier. It converts a free-format data file with variable names and value labels into a fixed-format file, including column specifications. The output of Free2Fix can be used in MultiNet with no further alterations. Most recent version: February, 1998.

Free2Fix documentation (Acrobat)

Download Free2Fix.


RENUMBER is a utility program for working with network data. Thepurpose of the program is to renumber the individuals in a set of network data so that the new ID numbers run consecutively from 1 to N, where N is the number of individuals in the network. NEGOPY assumes the ID numbers run from 1 to N. With NEGOPY, individuals with no links are classified as Isolates. Sometimes, however, you may find yourself with a data set in which the ID numbers do not run from 1 to N. If you leave these unused numbers in the data, NEGOPY will think those fifty people are isolates, when in reality they are not part of the network. Passing your data through RENUMBER will prevent this from happening. The program will accept original ID numbers running from 1 to 30,000; there can be up to 100 columns of information after the ID number carried over from the original to the updated files. Most recent version: November, 1995.

RENUMBER documentation (Acrobat)



NEG2ADJ is a utility program that takes standard negopy-style data files and produces square adjacency matrices. In a negopy-style data file, only the links that are present are described. Each line of data describes one link. The line begins with the ID numbers of the two individuals, followed by a number of indicators of the strength or content of the connection. The adjacency matrix for a network with n members will have n rows and n columns, one for each member. The entry in row i, column j describes the connection from the ith person in the network to the jth person. If there is no link between individuals i and j, there is a zero in row i, column j of the matrix. If there isa link, there will either be a "1" indicating the presence of a link, or another number indicating the strength of the link. Maximum, 500 nodes. Most recent version: April, 1999.

NEG2ADJ documentation (Acrobat)



ADJ2NEG is a utility program for converting adjacency matrices NEGOPY-style files, in which there is one link per line of data. Sometimes it is necessary to convert data that has been organized as an adjacency matrix so it can be used by NEGOPY. The ADJ2NEG program was written to make this task easy to accomplish. Most recent version: April, 1999.

ADJ2NEG documentation (Acrobat)


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