Many thanks Ellison
I have modified it as you suggested but I have this error message <<>> I am not sure which arguments I have missed?
*y <- function(t,n){
diff <- 0.5
df1 <- 2*n-2
ncp1 <- sqrt((diff^2*n)/2)
p <- 1- pt(t,df=df1)
test <- qt((1-p),df=df1,ncp=ncp1)*(1/sqrt(2))
return(test)
}
> Error in uniroot(integ, lower = 0, upper = 1000, n) :
> 'interval' must be a vector of length 2 >>>
> Please would you be able to give me an indication on why I am having this
> error message.
Because uniroot has a second parameter called 'interval' which overrides lower
and upper and you
I have defined t at the beginning of my query.
I have added n on uniroot below and still getting the same error message
uniroot(integ,lower=0,upper=1000,n)
--
View this message in context:
http://r.789695.n4.nabble.com/Uniroot-error-message-with-in-intergration-tp4634247p4634264.html
Sent
On Fri, Jun 22, 2012 at 4:00 PM, jeka12386 wrote:
> Dear all
>
> I am trying to calculate the value of n using uniroot. Here is the message
> I am having:
>
> <<<
> Error in uniroot(integ, lower = 0, upper = 1000, n) :
> 'interval' must be a vector of length 2 >>>
>
> Please would you be able t
Dear all
I am trying to calculate the value of n using uniroot. Here is the message
I am having:
<<<
Error in uniroot(integ, lower = 0, upper = 1000, n) :
'interval' must be a vector of length 2 >>>
Please would you be able to give me an indication on why I am having this
error message.
On 07-04-2012, at 19:48, jeka12386 wrote:
> Dear All
>
> I am trying to find a uniroot of a function within another function (see
> example) but I am getting an error message (f()values at end points not of
> opposite sign). I was wondering if you would be able to advise how redefine
> my functi
Dear All
I am trying to find a uniroot of a function within another function (see
example) but I am getting an error message (f()values at end points not of
opposite sign). I was wondering if you would be able to advise how redefine
my function so that I can find the solution. In short my first fu
On May 6, 2011, at 16:37 , Joshua Wiley wrote:
> On Fri, May 6, 2011 at 6:33 AM, CarJabo wrote:
>> sorry I am not asking someone to do my homework, as I have finished all the
>> procedure. I am just wondering why this technical error occurs, so I can fix
>> it myself.
>
> If whatever insti
On Fri, May 6, 2011 at 6:33 AM, CarJabo wrote:
> sorry I am not asking someone to do my homework, as I have finished all the
> procedure. I am just wondering why this technical error occurs, so I can fix
> it myself.
My guess would be it has something to do with the random data
generated at the 4
sorry I am not asking someone to do my homework, as I have finished all the
procedure. I am just wondering why this technical error occurs, so I can fix
it myself.
By the way i don't have any instructor or teaching assistant for help, so
any suggestion for the error will be appreciated.
Thanks very
You should ask your instructor or teaching assistant for help. R-help
is not for doing homework.
Duncan Murdoch
On 06/05/2011 9:00 AM, CarJabo wrote:
Hi,
I have tried to use uniroot to solve a value (value a in my function) that
gives f=0, and I repeat this process for 1 times(stimulatio
Hi,
I have tried to use uniroot to solve a value (value a in my function) that
gives f=0, and I repeat this process for 1 times(stimulations). However
error occures from the 4625th stimulation - Error in uniroot(f, c(0, 2),
maxiter = 1000, tol = 0.001) :
f() values at end points not of oppo
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