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2011 Feb 10
3
help - "the condition has length > 1 and only the first element will be used"
Hello there,
I don't know if I'm addressing my question to the right e-mail address, I hope I do. Actually I have a little problem concerning writing a code in R. I try to briefly sum up my problem.
As you can see below, I created the functions "Equation1" and "Equation2" with some conditions.
Equation1 <-function(x){
if (x<=0.25) y <-1-4*x
if (x>0.25) y <-0
y
}
Equation2 <-function(x){...
2018 Feb 15
2
package MonteCarlo error: object 'packages' not found
...reference to a "packages" option or parameter.
> library(MonteCarlo)
Loading required package: abind
Loading required package: codetools
Loading required package: rlecuyer
Loading required package: snow
Loading required package: snowfall
> infest_kud_fun<-function(x,A,B){
+?? equation1=exp(A-(B*x))
+?? return(list("equation1"=equation1))
+ }
> x_grid<-c(0.5,10) #distances kudzu could grow
> A_grid<-rnorm(1000) #probabilities
> B_grid<- rnorm(1000) #probabilities
> #put parameters in a list
> param_list_kud=list("x"=x_grid, &quo...
2018 Feb 15
0
package MonteCarlo error: object 'packages' not found
...parameter.
>
> > library(MonteCarlo)
> Loading required package: abind
> Loading required package: codetools
> Loading required package: rlecuyer
> Loading required package: snow
> Loading required package: snowfall
>
> > infest_kud_fun<-function(x,A,B){
> + equation1=exp(A-(B*x))
> + return(list("equation1"=equation1))
> + }
>
>
> > x_grid<-c(0.5,10) #distances kudzu could grow
> > A_grid<-rnorm(1000) #probabilities
> > B_grid<- rnorm(1000) #probabilities
>
>
> > #put parameters in a list
> >...