sch_topoi_la {criticalpath}

R Documentation

LA Length of Arcs Topological Indicator

Description

Measures the presence of long arcs based on the difference between the progressive level of the end activity and the start node of each relation. If LA is approximately equal zero, the progressive level between activities is as far as possible. Otherwise, if LA is equal one, the relation distance are one.

Usage

sch_topoi_la(sch)

Arguments

sch	A schedule object.

Value

A number between 0 and 1, inclusive.

See Also

sch_topoi_sp(), sch_add_relations(), sch_topoi_ad(), sch_relations(), sch_xy_gantt_matrix(), sch_activities(), sch_topoi_tf(), sch_add_activities().

Examples

sch <- sch_new() %>%
  sch_title("Fictitious Project Example") %>%
  sch_reference("VANHOUCKE, Mario. Measuring time:
  improving project performance using earned value management.
  Gent: Springer, 2009, p. 18") %>%
  sch_add_activity(  1L, "a1" , 0L, 2L,3L,4L) %>%
  sch_add_activity(  2L, "a2" , 4L, 5L) %>%
  sch_add_activity(  3L, "a3" , 9L, 10L) %>%
  sch_add_activity(  4L, "a4" , 1L, 6L) %>%
  sch_add_activity(  5L, "a5" , 4L, 9L) %>%
  sch_add_activity(  6L, "a6" , 5L, 7L) %>%
  sch_add_activity(  7L, "a7" , 1L, 8L,11L) %>%
  sch_add_activity(  8L, "a8" , 7L, 12L) %>%
  sch_add_activity(  9L, "a9" , 8L, 12L) %>%
  sch_add_activity( 10L, "a10", 3L, 12L) %>%
  sch_add_activity( 11L, "a11", 3L, 12L) %>%
  sch_add_activity( 12L, "a12", 0L) %>%
  sch_plan()
sch_topoi_la(sch) # 0.07692308

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