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SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

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754 IGRAPH<br />

The keyword COINCIDENT controls the placement of markers that have identical values on<br />

all axes. COINCIDENT can have one of the following two values:<br />

NONE Places coincident markers on top of one another. This is the default<br />

value.<br />

JITTER(amount) Adds a small amount of random noise to all scale axis dimensions.<br />

Amount indicates the percentage of noise added and ranges from 0 to 10.<br />

Example<br />

IGRAPH<br />

/Y=VAR(sales96) TYPE=SCALE<br />

/X1=VAR(sales95) TYPE=SCALE<br />

/COORDINATE=VERTICAL<br />

/SCATTER COINCIDENT=JITTER(5).<br />

• COORDINATE defines the chart as two-dimensional with sales96 on the vertical<br />

dimension.<br />

• SCATTER creates a scatterplot of sales96 and sales95.<br />

• The scale axes have 5% random noise added by the JITTER keyword allowing separation<br />

of coincident points.<br />

AREA Subcommand<br />

AREA creates area charts. These charts summarize categories of one or more variables. The<br />

following keywords are available:<br />

summary function Defines a function used to summarize the variable defined on the Y<br />

subcommand. If the Y axis assignment is $COUNT or $PCT, the AREA<br />

subcommand cannot have a summary function. If the Y subcommand<br />

specifies TYPE=CATEGORICAL, then AREA can only specify MODE as<br />

the summary function. Otherwise, all summary functions described on<br />

p. 764 are available.<br />

POINTLABEL Labels points with the actual values corresponding to the dependent<br />

axis (VAL), the percentage of cases (PCT), and the number of cases<br />

included in each data point (N). The default is no labels.<br />

AREALABEL Labels area with category labels (CAT), the percentage of cases<br />

(PCT), and the number of cases included in each line (N). The default<br />

is no labels.<br />

BREAK Indicates whether the lines break at missing values (MISSING) or not<br />

(NONE).<br />

BASELINE The baseline value determines the location from which the areas will<br />

hang (vertical) or extend (horizontal). The default value is 0.

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