SOURCEID Subcommand (PROXMAP command)

[/SOURCEID] NAME = $srcname
            DATA =  varlist
            [LABEL = ’label’]
            [WEIGHTS = varlist]
[/SOURCEID ...]

The minimum specifications for the PROXMAP command at the SOURCEID subcommand are the keywords DATA with a variable list, and NAME with a source name.

NAME

Specifies the name of the source. Each source must have a unique name, which is preceded by a dollar sign ($), in accordance with the naming conventions for system variables. This name is used in subsequent subcommands to reference a specific source.

LABEL

Label specifies the label for the source. This label is used in output tables and charts and must follow standard label conventions.

DATA

Specifies the data that is associated with the source. The variable list must contain at least three variables. If at the DATA subcommand, DATA=PROXIMITIES is specified, the variables define a square proximity matrix, where the number of variables must be equal to the number of cases (objects). The order of the variables is important, as it defines one mode of the matrix (columns), while the cases define the other mode (rows). Each cell represents the proximity between two objects; the diagonal contains self-proximities (typically zero).

If at the DATA subcommand, DATA=MULTIVARIATE (default), the variables are treated as features from which proximities are derived. In this case, proximity weights are not allowed.

WEIGHTS

Specifies a matrix of proximity weights, applicable only when at the DATA subcommand DATA=PROXIMITIES is used. Each weight adjusts the importance of the corresponding proximity in the loss function. By default, all proximity weights are equal to 1.0.

Example

GET FILE ’Ekman.sav’.
PROXMAP /SOURCEID DATA = nm434 nm445 nm465 nm472 nm490 nm504 nm537 nm555 nm584 nm600 nm610 nm628 nm651
                         nm674
                  NAME = $SRC1
 /DATA = PROXIMITY.

In this example, the data is a matrix of proximities between 14 different colors, so PROXIMITIES needs to be specified at the DATA subcommand.

The single source is named $SRC1 and labeled SOURCE 001 (default).