I am curious about this problem as well. How do you go about creating the
weights for each pair, and are you suggesting that we can just incorporate a
weight statement in the model as opposed to the strata statement? And Dr.
Therneau, let's say I have 140 cases matched with replacement to 2 cont
You could try:
x1$V2[1] <- "TCLA1"
x[outer(rownames(x), colnames(x), FUN=paste) %in%
as.character(interaction(x1, sep=" "))] <- 1
x
TCLA1 VPS41 ABCA13 ABCA4
AKT3 1 0 0 0
AKTIP 0 1 0 0
ABCA13 0 0 0 0
ABCA4 0 0 0 0
A.
Hi:
sorry I have a basic question.
I have a data frame with two columns:
> x1
V1 V2
1 AKT3TCL1A
2 AKTIPVPS41
3 AKTIPPDPK1
4 AKTIP GTF3C1
5 AKTIPHOOK2
6 AKTIPPOLA2
7 AKTIP KIAA1377
8 AKTIP FAM160A2
9 AKTIPVPS16
10 AKTIPVPS18
I have a matrix 1211
I am not quite sure what you are complaining about. The ODBC interface
definition is not vectorized, and that has nothing to do with R... that applies
across all platforms I have seen. The DBI API is consistent with that. There
are some proprietary APIs that implement bulk data transfers, but th
On 12-Aug-2014 21:41:52 Rolf Turner wrote:
> On 13/08/14 07:57, Ron Michael wrote:
>> Hi,
>>
>> I would need to get a clarification on a quite fundamental statistics
>> property, hope expeRts here would not mind if I post that here.
>>
>> I leant that variance-covariance matrix of the standardized
On 13/08/14 07:57, Ron Michael wrote:
Hi,
I would need to get a clarification on a quite fundamental statistics property,
hope expeRts here would not mind if I post that here.
I leant that variance-covariance matrix of the standardized data is equal to
the correlation matrix for the unstandar
On 12-Aug-2014 19:57:29 Ron Michael wrote:
> Hi,
>
> I would need to get a clarification on a quite fundamental statistics
> property, hope expeRts here would not mind if I post that here.
>
> I leant that variance-covariance matrix of the standardized data is equal to
> the correlation matrix fo
Great!
Thank you!
I think the function with the C-like function should do the trick.
On Tue, Aug 12, 2014 at 4:31 PM, John McKown
wrote:
> On Tue, Aug 12, 2014 at 3:23 PM, William Dunlap wrote:
>
>> > Again, in my opinion, all time date should be recorded in GMT.
>>
>> It depends on conte
Hi,
I would need to get a clarification on a quite fundamental statistics property,
hope expeRts here would not mind if I post that here.
I leant that variance-covariance matrix of the standardized data is equal to
the correlation matrix for the unstandardized data. So I used following data.
D
On Tue, Aug 12, 2014 at 2:46 PM, Dan Muresan wrote:
> Yes, of course, that's an obvious work-around, thanks. Another one is
> to use temporary tables.
>
> But I'd like to know if binding a vector to an SQL parameter is
> possible in rsqlite (or even in the DBI API or with other drivers --
> it se
On Tue, Aug 12, 2014 at 3:23 PM, William Dunlap wrote:
> > Again, in my opinion, all time date should be recorded in GMT.
>
> It depends on context. If you are studying traffic flow or
> electricity usage, then you want local time with all its warts
> (perhaps stated as time since 3am so any da
> Again, in my opinion, all time date should be recorded in GMT.
It depends on context. If you are studying traffic flow or
electricity usage, then you want local time with all its warts
(perhaps stated as time since 3am so any daylight savings time
problems are confined to a small portion of th
Marc:
You just need to be more patient -- this is already happening:
http://en.wikipedia.org/wiki/Tidal_acceleration
Cheers,
Bert
Bert Gunter
Genentech Nonclinical Biostatistics
(650) 467-7374
"Data is not information. Information is not knowledge. And knowledge
is certainly not wisdom."
Cliff
On Tue, Aug 12, 2014 at 2:26 PM, Erin Hodgess
wrote:
> What I would like to do is to look at several days and determine
activities
> that happened at times on those days. I don't really care which days, I
> just care about what time.
>
> Thank you!
>
Ah! A light dawns. You want to subset your da
On Aug 12, 2014, at 2:49 PM, John McKown wrote:
> And some people wonder why I absolutely abhor daylight saving time.
> I'm not really fond of leap years and leap seconds either. Somebody
> needs to fix the Earth's rotation and orbit!
I have been a longtime proponent of slowing the rotation of
And some people wonder why I absolutely abhor daylight saving time.
I'm not really fond of leap years and leap seconds either. Somebody
needs to fix the Earth's rotation and orbit!
On Tue, Aug 12, 2014 at 2:14 PM, William Dunlap wrote:
>> What if I just want the seconds vector without the date, p
Yes, of course, that's an obvious work-around, thanks. Another one is
to use temporary tables.
But I'd like to know if binding a vector to an SQL parameter is
possible in rsqlite (or even in the DBI API or with other drivers --
it seems to me it isn't). This seems like a nasty shortcoming
(especia
On Tue, Aug 12, 2014 at 2:40 PM, John McKown
wrote:
> You can simply make that a function
>
> getTimePortion <- function(POSIXct_value) {
> value_in_seconds=as.integer(POSIXct_value);
> sprintf("%02d:%02d:%02d", # C-style
> formatting string
Erin,
Is a sequential resolution of seconds required, as per your original post?
If so, then using my approach and specifying the start and end dates and times
will work, with the coercion of the resultant vector to numeric as I included.
The method I used (subtracting the first value) will als
On Tue, Aug 12, 2014 at 1:51 PM, Erin Hodgess wrote:
> Hello!
>
> If I would like to generate a sequence of seconds for a date, I would do
> the following:
>
> x <- seq(from=as.POSIXct(2014-08-12 00:00:00),to=as.POSIXct(2014-08-12
> 23:59:59),by="secs")
>
> What if I just want the seconds vector w
If your activities of interest are mainly during the workday then
seconds-since-3am might give good results, avoiding most daylight
savings time issues. If they are more biologically oriented then
something like seconds before or after sunrise or sunset might be
better. Both can be expressed as d
What I would like to do is to look at several days and determine activities
that happened at times on those days. I don't really care which days, I
just care about what time.
Thank you!
On Tue, Aug 12, 2014 at 3:14 PM, William Dunlap wrote:
> > What if I just want the seconds vector without
> What if I just want the seconds vector without the date, please? Is there
> a convenient way to create such a vector, please?
Why do you want such a thing? E.g., do you want it to print the time
of day without the date? Or are you trying to avoid numeric problems
when you do regressions with
On Aug 12, 2014, at 1:51 PM, Erin Hodgess wrote:
> Hello!
>
> If I would like to generate a sequence of seconds for a date, I would do
> the following:
>
> x <- seq(from=as.POSIXct(2014-08-12 00:00:00),to=as.POSIXct(2014-08-12
> 23:59:59),by="secs")
>
> What if I just want the seconds vector
Hi,
I Have two datasets df1 and df2 with 3 matching columns. I need to do a t.test
of sp1, sp2 and sp3� and var1, var2 and var3 where the year, month and location
match.
I can do it with sapply or mapply but I want the end result to be a data.frame.
I prefer to do it with
plyr or dplyr as I have
Hi,
I 'm modelling the occurrence of daily rainfall with a first order Markov chain.
I would like to know if there is a statistic test implemented in R that could
allow me to asses that the observed rainfall time series verifies the Markov
assumption.
Thanks
P.S. My apologies for cross-posting si
Hello!
If I would like to generate a sequence of seconds for a date, I would do
the following:
x <- seq(from=as.POSIXct(2014-08-12 00:00:00),to=as.POSIXct(2014-08-12
23:59:59),by="secs")
What if I just want the seconds vector without the date, please? Is there
a convenient way to create such a
On Tue, Aug 12, 2014 at 10:55 AM, Dan Muresan wrote:
> Hi, is there a way to bind vectors to DBI query parameters? The
> following tells me that vectors are sent as separate values:
>
>> library("RSQLite")
>> c <- dbConnect (SQLite())
>> dbGetQuery(c, "create table tst (x int, y int)")
>> dbGetQue
Thank you very much for all replies:) Here is my working code:
for(i in ls(pattern="P_")){print(head(get(i),2))}
On Monday, August 11, 2014 11:04 AM, Greg Snow <538...@gmail.com> wrote:
In addition to the solution and comments that you have already
received, here are a couple of additional
Hi, is there a way to bind vectors to DBI query parameters? The
following tells me that vectors are sent as separate values:
> library("RSQLite")
> c <- dbConnect (SQLite())
> dbGetQuery(c, "create table tst (x int, y int)")
> dbGetQuery(c, "insert into tst values (?, ?)", data.frame(x=c (1,2,1,2)
PI's of what? -- future individual values or mean values?
I assume quantreg provides quantiles for the latter, not the former.
(See ?predict.lm for a terse explanation of the difference). Both are
obtainable from bootstrapping but the details depend on what you are
prepared to assume. Consult refe
On Aug 12, 2014, at 12:23 AM, Jan Stanstrup wrote:
> Hi,
>
> I am trying to find a way to estimate prediction intervals (PI) for a
> monotonic loess curve using bootstrapping.
>
> At the moment my approach is to use the boot function from the boot package
> to bootstrap my loess model, which
Without a representative sample of data, it is very hard to understand your
question or to be specific about suggestions. See [1] for some ideas about how
to communicate questions online.
Not that "clearing" data would usually mean deleting it, as in rm(data). From
context I assume you mean "cl
That's perfect! Many thanks.
On 12 August 2014 14:32, Richard M. Heiberger wrote:
> Yes, use xlim=c(0, 30) in your definition of P1
>
> On Tue, Aug 12, 2014 at 7:26 AM, Naser Jamil
> wrote:
> > Dear Richard and Duncan,
> > your suggestions are absolutely serving what I need. But I would like t
Thank you all kindly.
Grant Rettke | ACM, AMA, COG, IEEE
gret...@acm.org | http://www.wisdomandwonder.com/
“Wisdom begins in wonder.” --Socrates
((λ (x) (x x)) (λ (x) (x x)))
“Life has become immeasurably better since I have been forced to stop
taking it seriously.” --Thompson
On Tue, Aug 12, 201
Yes, use xlim=c(0, 30) in your definition of P1
On Tue, Aug 12, 2014 at 7:26 AM, Naser Jamil wrote:
> Dear Richard and Duncan,
> your suggestions are absolutely serving what I need. But I would like to
> see x-axis to be up to 30 instead of 20. Do you have any suggestion on that?
>
> Many thanks
The official maintainers were dismissive when I suggested there were some
problems I could fix with the then implementation of polr. I haven't looked
at it since, sorry.
On Tue, Aug 12, 2014 at 7:44 PM, Guido Biele [via R] <
ml-node+s789695n4695392...@n4.nabble.com> wrote:
> I modified (where ne
Dear Richard and Duncan,
your suggestions are absolutely serving what I need. But I would like to
see x-axis to be up to 30 instead of 20. Do you have any suggestion on that?
Many thanks for your kind help.
Regards,
Jamil.
On 12 August 2014 01:22, Duncan Mackay wrote:
> Hi
>
> If you want a
Dear R-users,
I would like to run a multivariate tobit model in R. Is there any package
available to perform this task?
Best regards,
Printil
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__
R-help@r-project.
Hello List,
I did this script to clear data after import (I dont know is ok ). After
its execution levels and label values got lost. Could some explain me to
reassign levels again in the script (new depurate value)?
Best regard
Maicel Monzon MD, PHD
Center of Cybernetic Apply to Medicine
# d
Hi,
I am trying to find a way to estimate prediction intervals (PI) for a
monotonic loess curve using bootstrapping.
At the moment my approach is to use the boot function from the boot
package to bootstrap my loess model, which consist of loess + monoproc
from the monoproc package (to force
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