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7 results for “from:Amit Thombre”

Optimization function
Amit Thombre · Nov 20, 2014 · r-help

Hi, I want to optimize the root mean square error objective function using the optim function. Thus the function will look like sqrt(sum((yi - f(xi))^2)/n). Now the f(xi) is the Arima function. I am not...

Using sapply instead of for loop
Amit Thombre · Nov 19, 2014 · r-help

Charles , I am not getting an error . The final array A does not have the values in it. Here is the reproducible code. I have even tried using paasing ervalue as a parameter to the function far. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- errf<-function(act...

Using sapply instead of for loop
Amit Thombre · Nov 19, 2014 · r-help

If I pass all the variables to the function in the following way then I get the following error "Error in cat("Value of error", ervalue[i, j, k, l, m, n, p]) : argument "ervalue" is missing, with no default...

Using sapply instead of for loop
Amit Thombre · Nov 19, 2014 · r-help

Charles, Some variables were missing in the code. I have put them in this code. Now what happens is the value of cat("Value of error", ervalue[i,j,k,l,m,n,p]) gives error value for various runs...

Using sapply instead of for loop
Amit Thombre · Nov 19, 2014 · r-help

I am trying to replace a for loop by using sapply, The code is for forecasting using arima. The code is as follows:- ------------------------------------------------------- far<-function(p) { cat("does it come here value of p", p) tryCatch({ air.model <-Arima(tsa...

Using sapply instead of for loop
Amit Thombre · Nov 19, 2014 · r-help

The following is printed for i,j,k,l,m,n,p 2 2 2 2 2 1 2 "Value of error 6.281757Value of i,j,k,l,m,n,p 2 2 2 2 2 1 2, , 1...

Using sapply instead of for loop
Amit Thombre · Nov 20, 2014 · r-help

Thanks Charles. I will have to extract the min value from the list A by selecting the proper index. ________________________________ From: Charles Determan Jr [deter088 at umn.edu] Sent: Wednesday, November 19, 2014 11:48 PM To: Amit Thombre Cc: r...

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