... Plot vectors may be generated in several ways: . a. You may read the vectors from a file using the read command The file is expected to be an ASCII file of columns of numbers (separated by spaces or commas). You define the file to SM using the data command, and associate a column or row of numbers with a SM vector using the read command. ... I can also read a row from the file, instead of a column, by saying read row x 1 Note that the vector is defined by the read command. ...