Description Usage Arguments Value Author(s) References Examples
This function optimises stroosnijder (1976) cumulative infiltration (I): Ks and S.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | stroosnijder(data = NULL, time, I, S = 0.1, K = 0.1, para = 2,
group = NULL)
## Default S3 method:
stroosnijder(data = NULL, time, I, S = 0.1, K = 0.1,
para = 2, group = NULL)
## S3 method for class 'stroosnijder'
predict(object, time = NULL, ...)
## S3 method for class 'stroosnijder'
plot(x, xlab = "Time(Minutes)",
ylab = "Cumulative (cm)", main = NULL, layout = NULL, ...)
## S3 method for class 'stroosnijder'
summary(object, ...)
## S3 method for class 'stroosnijder'
print(x, ...)
## S3 method for class 'stroosnijder'
coef(object, ...)
|
data |
dataframe. It can contain data with column names of "time" and "I" |
time |
character or numeric. The name of time variable in the dataframe. If the "data" parameter contains "time", this will be ignored. The unit must be in seconds. |
I |
cumulative infiltration (I) or infiltration rate (i) [mm] |
S |
numeric. sorptivity parameter |
K |
character. The type of hydraulic conductivity model. It takes "BC" for Brooks and Corey (1964) and VG for van Genuchten (1980). |
para |
a parameter for each model |
group |
character. The name of the group variables if the data is from different areas. |
object |
Model output object |
... |
Any other graphical parameter |
x |
a return object of the function. |
xlab |
x label of the plot |
ylab |
y label of the plot |
main |
Title of the plot |
layout |
plot layout |
Ks: optimised saturated hydraulic conductivity [L/T]
S: optimised sorptivity [LT^-0.5]
output: output of the group simulation
George Owusu
stroosnijder, L., 1976. Infiltratie en Herverdeling van Water in Gronde. Versl.Landbouwkd, Onderz. 847
1 2 3 4 5 6 7 8 9 10 11 12 13 | data=read.csv(system.file("ext","sys","exampleBEST.csv",package="vadose"))
stroosnijder1<-stroosnijder(data=data,time="time",I="I")
#print(gof(stroosnijder1))
plot(stroosnijder1)
predict(stroosnijder1)
coef(stroosnijder1)
#gof(stroosnijder1)
#group simulation
data=read.csv(system.file("ext","sys","infiltration2.csv",package="vadose"))
assin_breko<- subset(data, ID=="41A20_1")
stroosnijderg<-stroosnijder(data=data,time="minutes",I="CumInfil",group="ID")
coef(stroosnijderg)
|
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.