Dear Boris,
I am new too, but got a lot of help from this webpage. I hope it will work
for you too,
All the best!
http://tryr.codeschool.com/
2015-05-09 23:44 GMT-03:00 Boris Chow :
> Dear R users,
>
> I am new to R community and would like to dig into it. Would you advise
> what are the appro
Dear R users,
I am new to R community and would like to dig into it. Would you advise what
are the appropriate steps to do so?
I want to do a pricing of an American option as my first exercise. Can some
experienced users give me some pointers to do so?
Thanks a lot,
Boris
_
On May 9, 2015, at 4:35 PM, ce wrote:
> Dear All,
>
> I have a list, using lapply I find some elements of the list, and then I want
> to change the values I find. but it doesn't work:
>
> foo<-list(A = c(1,3), B =c(1, 2), C = c(3, 1))
> lapply(foo, function(x) if(x[1] == 1 ) x )
> $A
> [1] 1 3
Dear All,
I have a list, using lapply I find some elements of the list, and then I want
to change the values I find. but it doesn't work:
foo<-list(A = c(1,3), B =c(1, 2), C = c(3, 1))
lapply(foo, function(x) if(x[1] == 1 ) x )
$A
[1] 1 3
$B
[1] 1 2
$C
NULL
lapply(foo, function(x) if(x[1]
Hi Kate,
The following:
x<-read.table(text="A B C D E
A 1232 0.565
B 2323 0.5656 0.5656 0.5656
C 2323 0.5656
D 2323 0.5656
E 2323 0.5656
F 2323 0.5656
G 2323 0.5656
G 2323 0.5656 0.5656 0.5656",header=TRUE,fill=TRUE)
works fine for me:
x
AB C D E
1 A 1232 0.5650 NA N
Way way off topic. Ask your instructor for help or clarification. We
do neither homework nor theses here.
(But you may wish to search the Optimization task view here for
packages that might be relevant:
http://cran.r-project.org/web/views/Optimization.html 0
Cheers,
Bert
Bert Gunter
Genentech N
Hello All,
I have set-up the \inst directory and now looking to the .onLoad and .onAttach
for side Effects. The Bond Lab data directories are all in \inst\BondLab.
The connection functions for BondLab are ~\users\BondLab\foo.
I would like to be able to create and copy the \inst\BondLab fo
Hi,
i need to extract the parameters of the BMA predictive distribution. when i
use modelParameters( fit, ...) i obtain the parameters of each member. In my
case i would likte to extact the parameters for the global BMA gamma
distribution (global model) and not for each member
any help !
thanks
Dear Sir/Madam
I'm Working on a research project called "Dynamic price optimization" using
genetic algorithm to optimize product price's in an e-commerce store. I'm
doing this project using R language (package GA). I need help in defining a
Fitness function to optimize the products price. Can any
hi,
i need to generate 250 random values with rgamma function. The problem that
i have a negative scale parameter (provided by ensembleBMAgamma0 function).
i received a NaN error message
any help !
thanks
--
View this message in context:
http://r.789695.n4.nabble.com/rgamma-NaN-error-message
txt <- c("A B C D E", "A 1232 0.565", "B 2323 0.5656 0.5656 0.5656",
"C 2323 0.5656", "D 2323 0.5656", "E 2323 0.5656", "F 2323 0.5656",
"G 2323 0.5656", "G 2323 0.5656 0.5656 0.5656")
z <- read.table(text=txt, fill=TRUE, header=TRUE)
str(z)
#'data.frame': 8 obs. of 5 variables:
# $ A: Factor
I've tried many things:
read.csv("data.frame.txt", header=F, fill=T,stringsAsFactors=FALSE,
sep="\t", colClasses="character")
read.csv2("data.frame.txt", fill=T,stringsAsFactors=FALSE, sep="\t",
as.is=T, colClasses="character")
also with read.delim/2
read.table("data.frame.txt", header=F, fill=T
I've tried colClasses="character", fill=T, as.is=T, header=F,
sep="\t", read.csv; read.delim, read.csv2, read.delim2 don't know
what else to try.
On Sat, May 9, 2015 at 11:13 AM, MacQueen, Don wrote:
> Some indication of what you have tried would be useful. Assuming you are
> using read.table
Some indication of what you have tried would be useful. Assuming you are
using read.table(), then the "fill" argument of read.table() might be what
you need. If you look at the help for read.table you will find:
>From ?read.table:
fill: logical. If 'TRUE' then in case the rows have unequal leng
There are many ways to import data into R, and I don't know any of them that
would do what you are describing. You really need to give us some reproducible
code if we are to follow along with your problem.
---
Jeff Newmiller
I have some data that I've trouble importing...
A B C D E
A 1232 0.565
B 2323 0.5656 0.5656 0.5656
C 2323 0.5656
D 2323 0.5656
E 2323 0.5656
F 2323 0.5656
G 2323 0.5656
G 2323 0.5656 0.5656 0.5656
When I input the data it seems to go like this:
SampleID ItemB ItemC ItemD ItemE
A 1232 0.565
B 232
I am attempting to predict tomorrow's rainfall, RISK_MM, with LASSO using a
data set that
I have partitioned into a train data set and a test data set. The
structures of the
two data sets are shown below and appear to be identical except the number
of observations:
str(train)
'data.frame': 262 ob
17 matches
Mail list logo