Schedule Performance Index (SPI).

Calculates the Schedule Performance Index (SPI) of work completed based on the Earned Value (EV) and Planned Value (PV).

Usage

spi(ev, pv)

Arguments

ev

Earned Value.

pv

Planned Value.

Value

The function returns the Schedule Performance Index (SPI) of work completed.

References

Damnjanovic, Ivan, and Kenneth Reinschmidt. Data analytics for engineering and construction project risk management. No. 172534. Cham, Switzerland: Springer, 2020.

See also

pv, ev, ac, sv, cv, cpi, eac

Examples

# Set the BAC, schedule, and current time period for an example project.
bac <- 100000
schedule <- c(0.1, 0.2, 0.4, 0.7, 1.0)
time_period <- 3

# Calculate the PV.
pv <- pv(bac, schedule, time_period)

# Set the actual % complete and calculate the EV.
actual_per_complete <- 0.35
ev <- ev(bac, actual_per_complete)

# Calculate the SPI and print the results.
spi <- spi(ev, pv)
cat("Schedule Performance Index (SPI):", spi, "\n")
#> Schedule Performance Index (SPI): 0.875