Block diagram metrics, available in the LabVIEW Professional Development System, appear in the VI Metrics window when you place a checkmark in the Diagram checkbox. The following metrics specify the block diagram of a VI and its structures and wires:
diagrams—Number of block diagrams. Each VI has a single top-level block diagram. In addition, it has one subdiagram for each loop or structure.
max diag depth—Deepest nesting level of block diagrams in a VI. If the VI has no structures, it has a depth of 0.
diag width (pixels)—Width of the block diagram in pixels.
diag height (pixels)—Height of the block diagram in pixels.
wire sources—Measures the total number of sources in the VI. Each wire has a single source but can branch to multiple destinations. If a wire enters or exits a structure, LabVIEW considers the tunnel that the wire passes through to be a new source.