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- <DATA>
- LINKAGE pedigree files can be read in directly (handy for
- checking coding). There must be at least two spaces between
- locus codes, and only single spaces between the symbols within a
- locus code, i.e. PEDRAW expects to find codes such as:
-
- 2 1 1 1 0 1 0 1 1
-
- PEDRAW expects to find a file with extension .PED to be in a
- format suitable to be read by MAKEPED, and with .PPD if the file
- has been output by MAKEPED. This clashes with the convention
- suggested in the most recent LINKAGE documentation of having the
- former with an extension .DAT and the latter with an extension
- .PED. The PEDRAW convention is the one used by LINKSYS and files
- may have to be renamed accordingly.
-
- LINKAGE files are treated as follows:
-
- 1. A unique ID number is constructed by multiplying the
- pedigree number by 1000 and adding the individual number, so
- that individual 2 from pedigree 3 gets an ID of 3002.
-
- 2. Each of the locus codes is read into a text line. Single
- spaces within locus codes are removed, so that 0 1 1 becomes
- 011.
-
- 3. As for LINKSYS files, PEDRAW attempts to guess the diagnosis
- code by assuming that the first locus code is affection status.
- If the first digit of the first locus code is 2 the diagnosis
- code is set to 1 (for solid shading), otherwise it is set to 0
- <ADJUST> <DATADAT -patterns>.