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I am using the lp() function, but would like to use the optimal parameter as an input for following functions. Is there a way to get them?
You could also use missing() to test whether or not the argument b was supplied:
myFunc <- function(a,b){
if(missing(b)) {
a
} else {
a + b
}
}
myFunc(3,1.5)
# [1] 4.5
myFunc(3)
# [1] 3
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Suppose we have a vector [1:10] of players, I want to generate all possible roommates for these playes (not combn(10, 2))
Can you help me?
Thank you
You can iterate over combn(with different ks)
x= 1:10
lapply(1:length(x), function(k) combn(x,k))
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I am not able to integrate this function.
I am getting an error: argument "y" is missing, with no default. The answer to this problem is 1.
First of all, your expression is actually a function of y.
If you want to write the double integral, you can make it with integrate (but you need to simplify the integral a bit in advance)
f <- function(y) 6*integrate(function(x) x,0,1)$value*integrate(function(z) z**2,0,y)$value/y**2
Mathematically, you can derive that, the function f can be further simplified to
f <- function(y) y
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How to make a function within a function?
My goal is to insert the function inside the function.
Here is an example of function inside a function
f <- function(n) {
g <- function(x) {
x**n
}
}
such that
> f(3)(4)
[1] 64
But I have no idea what you are exactly after...
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Is there a function such as kable to output character vectors in a way that doesn't look as ugly as the default console type?
See eg p from the pander package or the generic pander method:
> pander::pander(sample(letters, 5))
_p_, _r_, _v_, _f_ and _t_
If you want to override the default formatting, see panderOptions or specify directly in the p function.
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I would like to get this loop to work. I am trying to save different dataframes with different names at once. I don't know how to get the path part of the code to vary with i:
for (i in specific) {
write.dta(get(paste0("degreeS", i)), "D:/Educacion/PeerEffects/",paste0( "degreeS", i,".dta"))
}
I needed to use the command file.path(). This solved the problem
for (i in specific) {
write.dta(get(paste0("degreeS", i)), file.path("D://Educacion//PeerEffects//", paste0("degreeS", i,".dta")))
}