Urban adjustment for the linear coefficient of variation (Lcv)
Urbanises or de-urbanises the Lcv using the methods outlined in the guidance by Wallingford HydroSolutions: 'WINFAP 4 Urban Adjustment Procedures'
LcvUrb(lcv, URBEXT2000, DeUrb = FALSE)
lcv |
the Lcv (numeric) |
URBEXT2000 |
quantiication of urban and suburbanisation for the subject catchment |
DeUrb |
logical argument with a default of FALSE. If set to TRUE, de-urbanisation adjustment is performed, if FALSE, urbanisation adjustment is performed |
The method for de-urbanisation isn't explicitly provided in 'WINFAP 4 Urban Adjustment Procedures', but the procedure is a re-arrangment of the urbanisation equation, solving for Lcv rather than Lcv-urban.
The urban adjust Lcv or the de-urbanised Lcv
Anthony Hammond
#Choose an urban site (site 53006) from the NRFA data then apply a de-urban #adjustment using the Lcv and URBEXT2000 displayed NRFAData[which(rownames(NRFAData) == 53006),] LcvUrb(0.21, 0.1138, DeUrb = TRUE) #Get the pooled Lmoment ratios results for catchment 53006 and apply the #urban adjustment using the pooled Lcv, and the URBEXT2000 for site 53006. CDs.53006 <- GetCDs(53006) QuickResults(CDs.53006)[[2]] LcvUrb(0.196, 0.1138)
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