Overview Pyramid

Source: SourceMonitor

Thresholds

Smells

• LOC/NOM is high: methods tend to be rather long.
• CYCLO/LOC is low: methods tend to have a rather simple logic.
• CALLS/NOM is high: methods tend to call many other methods.

Explanation

A brief description of the metrics used in the Overview Pyramid.

Top part: System Inheritance

ANDC

average number of derived classes;

AHH

average hierarchy height.

Left part: Size and Complexity

Direct metrics

NOP

number of packages;

NOC

number of classes;

NOM

number of methods;

LOC

lines of code;

CYCLO

cyclomatic complexity index.

Derived metrics

NOC/NOP

average number of classes per package → high-level structuring, indicates if packages tend to be coarse or fine grained;

NOM/NOC

average number of methods per class → class structuring, indicates how operations are distributed over the system;

LOC/NOM

average number of lines per method → operation structuring, indicates how well the system's behaviour is distributed over operations;

CYCLO/LOC

average method complexity → intrinsic operation complexity, indicates the expected complexity of an operation.

Right part: Coupling

Direct metrics

CALLS

number of calls;

FANOUT

number of referenced types.

Derived metrics

CALLS/NOM

average number of calls in a method → coupling intensity, indicates how many operations are invoked on average by each operation;

FANOUT/CALLS

average number of external calls → coupling dispersion, indicates how many classes are involved on average in a single operation.