TransfoParam | R Documentation |
Function which transforms model parameters using the provided function (from raw to transformed parameters and vice versa).
## Generic function TransfoParam(ParamIn, Direction, FUN_TRANSFO) ## Specific functions TransfoParam_GR1A(ParamIn, Direction) TransfoParam_GR2M(ParamIn, Direction) TransfoParam_GR4J(ParamIn, Direction) TransfoParam_GR5J(ParamIn, Direction) TransfoParam_GR6J(ParamIn, Direction) TransfoParam_GR4H(ParamIn, Direction) TransfoParam_GR5H(ParamIn, Direction) TransfoParam_CemaNeige(ParamIn, Direction) TransfoParam_CemaNeigeHyst(ParamIn, Direction)
ParamIn |
[numeric] vector or matrix of parameter sets (sets in line, parameter values in column) |
Direction |
[character] direction of the transformation: use |
FUN_TRANSFO |
[function] model parameters transformation function (e.g. |
The transformation functions proposed in airGR for calibrating the GR models result from numerous testings at INRAE-Antony (HYCAR Research Unit, France). The proposed transformations were obtained with the Calibration_Michel algorithm and may differ for the same parameter of different models (e.g. X5 in GR5J and GR6J).
ParamOut [numeric] matrix of parameter sets (sets in line, parameter values in column)
Laurent Coron, Olivier Delaigue
library(airGR) ## --- generic function ## transformation Raw -> Transformed for the GR4J model Xraw <- matrix(c(+221.41, -3.63, +30.00, +1.37, +347.23, -1.03, +60.34, +1.76, +854.06, -0.10, +148.41, +2.34), ncol = 4, byrow = TRUE) Xtran <- TransfoParam(ParamIn = Xraw, Direction = "RT", FUN_TRANSFO = TransfoParam_GR4J) ## transformation Transformed -> Raw for the GR4J model Xtran <- matrix(c(+3.60, -2.00, +3.40, -9.10, +3.90, -0.90, +4.10, -8.70, +4.50, -0.10, +5.00, -8.10), ncol = 4, byrow = TRUE) Xraw <- TransfoParam(ParamIn = Xtran, Direction = "TR", FUN_TRANSFO = TransfoParam_GR4J) ## --- specific function ## transformation Raw -> Transformed for the GR4J model Xraw <- matrix(c(+221.41, -3.63, +30.00, +1.37, +347.23, -1.03, +60.34, +1.76, +854.06, -0.10, +148.41, +2.34), ncol = 4, byrow = TRUE) Xtran <- TransfoParam_GR4J(ParamIn = Xraw , Direction = "RT") ## transformation Transformed -> Raw for the GR4J model Xtran <- matrix(c(+3.60, -2.00, +3.40, -9.10, +3.90, -0.90, +4.10, -8.70, +4.50, -0.10, +5.00, -8.10), ncol = 4, byrow = TRUE) Xraw <- TransfoParam_GR4J(ParamIn = Xtran, Direction = "TR")
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