|
VARIABLE TO MATRIXName:
With this command, you specify the desired number of rows in the matrix. Dataplot then divides the number of observations in the variable by the requested number of rows to obtain the number of columns in the matrix. If this division does not result in an integer value, the last column of the matrix will be filled with the "missing value". To set this value, enter
<SUBSET/EXPCEPT/FOR qualification> where <y> is the response variable; <nrow> is a parameter that specifies the number of rows for the matrix; <m> is a matrix that will contain the resulting matrix; and where the <SUBSET/EXCEPT/FOR qualification> is optional.
To restore column order, enter
where M is a previously created matrix.
LET Y = SEQUENCE 1 1 10 LET NROW = 3 . SET STATISTIC MISSING VALUE -1 LET M = VARIABLE TO MATRIX Y NROW SET WRITE DECIMALS 1 PRINT M DELETE M SET VARIABLE TO MATRIX ROW LET M = VARIABLE TO MATRIX Y NROW SET WRITE DECIMALS 1 PRINT MThe following output is generated. MATRIX M -- 3 ROWS -- 4 COLUMNS VARIABLES--M1 M2 M3 M4 1.0 4.0 7.0 10.0 2.0 5.0 8.0 -1.0 3.0 6.0 9.0 -1.0 THE FORTRAN COMMON CHARACTER VARIABLE VARITO HAS JUST BEEN SET TO ROW MATRIX M -- 3 ROWS -- 4 COLUMNS VARIABLES--M1 M2 M3 M4 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 -1.0 -1.0Program 2: . Zarthan Company example from . Neter, Wasserman, Kutner, "Applied Linear Statistical Models" . . Y = Sales . X1 = Target Population (in thousands) . X2 = Per Capita Discretionary Income (dollars) . DIMENSION 200 COLUMNS READ DISTRICT Y X1 X2 1 162 274 2450 2 120 180 3254 3 223 375 3802 4 131 205 2838 5 67 86 2347 6 169 265 3782 7 81 98 3008 8 192 330 2450 9 116 195 2137 10 55 53 2560 11 252 430 4020 12 232 372 4427 13 144 236 2660 14 103 157 2088 15 212 370 2605 END OF DATA FIT Y X1 X2 . READ DPST4F.DAT TEMP LET NROW = 3 LET COV = VARIABLE TO MATRIX TEMP NROW SET WRITE DECIMALS -7 PRINT COVThe following output is generated. MATRIX COV -- 3 ROWS -- 3 COLUMNS VARIABLES--COV1 COV2 COV3 0.5908062E+01 0.1009524E-02 -0.1970405E-02 0.1009524E-02 0.3665626E-04 -0.3332548E-05 -0.1970405E-02 -0.3332548E-05 0.9372445E-06
Date created: 11/30/2010 |