.
From: Gabor Grothendieck [mailto:ggrothendi...@gmail.com]
Sent: Wed 13/01/2010 22:09
To: Colin Millar
Cc: r-help@r-project.org
Subject: Re: [R] R package dependencies
See the dep function defined here:
http://tolstoy.newcastle.edu.au/R/e6/help/09/03/7159.html
On Wed, Jan 13, 2010 at 11
to me.
Many thanks again,
Colin.
-Original Message-
From: Uwe Ligges [mailto:lig...@statistik.tu-dortmund.de]
Sent: 14 January 2010 14:06
To: Colin Millar
Cc: Gabor Grothendieck; r-help@r-project.org
Subject: Re: [R] R package dependencies
For the original question:
what are a packages
Hi there,
My question relates to getting information about R packages. In particular i
would like to be able to find from within R:
what are a packages dependencies
what are a packages reverse dependencies
does a package contain a dll
The reason i ask is:
The organisation that i work
Hi,
You would also make your code more efficient and possible more readable
by doing
ReturnsGrid -
function(x, y, m)
{
x + (seq.int(m) - 1) * (y - x) / m
}
(xx - ReturnsGrid(0, 9, 3))
#[1] 0 3 6
And if you want to supply vector x and y you could do something like
(there are probably better
[mailto:r-help-boun...@r-project.org]
On Behalf Of Colin Millar
Sent: 27 November 2009 16:41
To: Anastasia; r-help@r-project.org
Subject: Re: [R] Simple Function doesn't work?
Hi,
You would also make your code more efficient and possible more readable
by doing
ReturnsGrid -
function(x, y, m)
{
x
I think you just missed some commas out...
aar -
function(command = c(scrn, dx, df))
{
command - match.arg(command)
switch(command,
scrn = cat(scrn :Screening,\n),
dx = cat(dx:Diagnosis,\n),
df = cat(df:Don't Forget,\n)
)
}
Colin.
Ps you don't need the curly
And if you want to do both do
invisible( lapply(c(scrn,dx), aar) )
but I think you will have to use multiple ifs rather than switch if you
intend to add more functionality...
.
.
.
I think you just missed some commas out...
aar -
function(command = c(scrn, dx, df)) {
command -
Or alternatively store as a list and export later if you want
... after some tidying ...
library(lattice)
columns - 8:153
plots - vector(list, length(columns))
j - 0
for (i in columns)
{
plots[[ j - j+1 ]] -
histogram( ~ data[,i] | data[,2],
ylab = Frequency, xlab = Score,
Hi,
Look at
?NumericConstants
At the bottom of the details section you will find:
Note that a leading plus or minus is not regarded by the parser as part
of a numeric constant but as a unary operator applied to the constant.
See
?Syntax
for precedence information.
Hope this helps,
-help-boun...@r-project.org]
On Behalf Of Colin Millar
Sent: 17 November 2009 16:10
To: Zhiyuan Jason ZHENG; r-h...@stat.math.ethz.ch
Subject: Re: [R] Calculating the power of a negative number
Hi,
Look at
?NumericConstants
At the bottom of the details section you will find:
Note
Hi,
try ?table
# for example
(s3 - table(s))
# and if you want a single value
s3[a]
# or
s3[1]
HTH,
Colin.
From: r-help-boun...@r-project.org on behalf of Marc Giombetti
Sent: Tue 17/11/2009 22:55
To: r-help@r-project.org
Subject: [R] Basic
Sounds like a homework question ...
if y = a + bx + e, where e ~ N(0, sigma^2)
the log likelihood of the slope parameter and intercept parameters, a and b,
and variance sigma^2 given n data points y and covariates x is
f(a,b, sigma; y, x) = -0.5*n*log(2 * pi) - n*log(sigma) - 0.5 / sigma^2
A quick google on 'normality test' (no quotes) gives
http://en.wikipedia.org/wiki/Normality_test. This gives you a few more tests
than the KS test.
Cheers,
Colin.
Steve Lianoglou wrote:
Hi,
I think you can also use a qq-plot to do the same, no? You won't get a
statistic score + p.value,
Or perhaps use a temporary vector might be neater?
tmp - with(df.mydata, B[A==X C 2])
df.mydata[order(tmp) %in% 1:3,] # gives df with highest three values of B
or
head(df.mydata[order(tmp),],3) # gives first 3 rows of df sorted by B
Colin.
-Original Message-
From:
Hi,
This should work - head is quite a usefull summary function
head(df.mydata[df.mydata$A==X df.mydata$C 2, ],3)
Colin.
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On Behalf Of Noah Silverman
Sent: 26 August 2009 10:54
To:
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