INDEX MAXIMUM

INDEX MAXIMUM

Let Subcommand

Compute the index of the maximum value in a variable.

LET <par> = INDEX MAXIMUM <resp>
                        <SUBSET/EXCEPT/FOR qualification>
where <resp> is the variable for which the index maximum is to be computed;
            <par> is a parameter where the index maximum value is saved;
and where the <SUBSET/EXCEPT/FOR qualification> is optional.

LET K1 = INDEX MAXIMUM Y1

The following additional commands are supported
TABULATE INDEX MAXIMUM Y X
CROSS TABULATE INDEX MAXIMUM Y X1 ... XK
LET Y2 = CROSS TABULATE INDEX MAXIMUM Y X1 ... XK
LET Y2 = MATRIX ROW INDEX MAXIMUM M
LET Y2 = MATRIX COLUMN INDEX MAXIMUM M
LET Y2 = MATRIX GRAND INDEX MAXIMUM M
LET Y2 = MATRIX PARTITION INDEX MAXIMUM M NROW NCOL
LET Y2 = SORT BY INDEX MAXIMUM Y


INDEX MININUM PLOT Y X
CROSS TABULATE INDEX MININUM PLOT Y X1 X2


INDEX MAXIMUM BLOCK PLOT Y X1 ... XK

None

None

INDEX MINIMUM	= Compute the index for the minimum value of a variable.
INDEX EXTREME	= Compute the index for the most extreme value of a variable.
MINIMUM	= Compute the minimum value of a variable.
MAXIMUM	= Compute the maximum value of a variable.
MEAN	= Compute the mean of a variable.
MAX	= Library function to compute the maximum of two numbers.
MIN	= Library function to compute the minimum of two numbers.

Data Analysis

2009/2

 
LET Y1 = NORMAL RANDOM NUMBERS FOR I = 1 1 100
LET A = INDEX MAXIMUM Y1
    

 
.  Generate a "table" plot that contains
.
.    1) Subset flow category = 1
.    2) Row denotes flow value
.       Column denotes cond value
.    3) Plot symbol denotes algorithm corresponding
.       to "maximum value"
.  Step 1: Read the data
.
dimension 400 variables
read mills96.dat flow alg cond flowcat y1 to y14
retain flow alg cond y1  subset flowcat = 1
.
.  Step 2: Perform the relevant cross-tabulations
.
let 
set let cross tabulate collapse
let ytemp  = cross tabulate group two flow cond
let xtemp  = cross tabulate group one flow cond
let maxind = cross tabulate index maximum y1 flow cond
let ntemp  = size ytemp
let vsize = 1 for i = 1 1 ntemp
.
.  Step 3: Generate the table plot using the symbol plot command
.
char 1 2 3 4 5 6 7
y1label Condition Value
x1label Flow Value
xlimits 1 24
major xtic mark number 24
minor xtic mark number 0
ylimits 1 32
major ytic mark number 32
minor ytic mark number 0
tic offset units data
tic offset 1 1
.
symbol plot ytemp xtemp vsize maxind