Set of tools for monitoring road condition.
Currently, the following features are supported:
- International Roughness Index (IRI) computation
- continuously increasing segment
- fixed length overlapping segments with an offset
To download the development version of the package, type the following at the R command line:
install.packages("devtools")
devtools::install_github("vsimko/rroad")To download the release version of the package on CRAN, type the following at the R command line:
install.packages("rroad")profile <- rnorm(10000)
iri <- CalculateIRIperSegments(profile, IRI_COEF_100, 20)
par(mfrow = c(1,2)) # space for two diagrams
plot(profile, type = "l",
xlab = "Distance [dm]", ylab = "Profile [mm]",
main = "Read profile (Laser measurement)")
plot(iri, type = "s",
xlab = "Segment", ylab = "IRI [m/km]",
main = "International Roughness Index (IRI)\nsample = 10cm, segment = 20m")
Sayers, Michael W; Gillespie, Thomas D; Queiroz, Cesar A.V. 1986 The International Road Roughness Experiment (IRRE) : establishing correlation and a calibration standard for measurements. World Bank technical paper ; no. WTP 45. Washington, DC : The World Bank. Link