Linkage map files must be SAS data sets (with the .sas7bdat extension) and each file must have at least three columns named: LinkageGroup , MarkerName , and MarkerPosition . The LinkageGroup column lists the linkage group names or indexes (numeric or character). The MarkerName column lists the marker names (character). Lastly, the MarkerPosition column holds the position (in centiMorgans) of each marker on the chromosome (numerical).The method used for this specification can vary depending on whether JMP is connected to SAS on your local machine or connected to SAS on a server. You should refer to the Specifying Folders, Files, and Data Sets documentation for detailed information.
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