Read matrix data
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | DATA LIST LIST /a (F8) b (F8) c(F8). BEGIN DATA 1 2 3 4 5 6 7 8 9 END DATA. * read matrix data from a regular spss sav file. MATRIX. GET M /VARIABLES= a TO c. PRINT M /TITLE='Original matrix'. COMPUTE N=M*M. PRINT N /TITLE='Matrix squared'. COMPUTE I=1/M. PRINT I /TITLE='Matrix of inverse of each element'. END MATRIX. * If data is already in SPSS matrix data, use the MGET statement. MGET Statement: Reading SPSS Matrix Data Files MGET reads an SPSS matrix-format data file. MGET puts the data it reads into separate matrix variables. It also names these new variables automatically. The syntax of MGET is as follows: MGET [ [/] FILE = file reference] [/TYPE = {COV }] {CORR } {MEAN } {STDDEV} {N } {COUNT } · Since MGET assigns names to the matrices it reads, do not specify matrix names on the MGET statement. *If data is in an ASCII file use the READ statement. READ Statement: Reading Character Data The READ statement reads data into a matrix or submatrix from a character-format file—that is, a file containing ordinary numbers or words in readable form. The syntax for the READ statement is: READ variable reference [/FILE = file reference] /FIELD = c1 TO c2 [BY w] [/SIZE = size expression] [/MODE = {RECTANGULAR}] {SYMMETRIC } [/REREAD] [/FORMAT = format descriptor] · The file can contain values in freefield or fixed-column format. The data can appear in any of the field formats supported by DATA LIST. · More than one matrix can be read from a single input record by rereading the record. · If the end of the file is encountered during a READ operation (that is, fewer values are avail-able than the number of elements required by the specified matrix size), a warning message is displayed and the contents of the unread elements of the matrix are unpredictable. |
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