Hello to R people
This is not a question. Just found a beautiful summary dated back in
2004. Hope this will be useful for your work
Thanks to Gudrun Jonasdottir mailto:gudrunj_at_math.su.se?Subject=Re:%20[R]%20convert%20strings%20to%20object%20names:%20SUMMARY>>
In summary: The quickest way to co
Hi
a bit ugly approach
but it works
x1<-c(1,2,3)
x2<-c(1,5,6)
x3<-c(7,8,9)
A<-matrix(c(rep(x1,5),rep(x2,5),rep(x3,5),rep(x1,5)),nrow=20,ncol=3,byrow=T)
A
B <- apply(A,1, FUN = function(x)paste(x, collapse = ''))
table(B)
On 16.07.2011 12:29, Sebastian Lerch wrote:
Hi everyone,
my question mi
http://cran.r-project.org/web/packages/RMySQL/
On 15.07.2011 17:29, Bhushan, Vipul wrote:
Hello. Is there a package or functionality available somewhere which will allow
for complex searches (such as what SQL can do) of collections of RData files?
Search capability within a given RData file at
Hello everybody
Forget about 13th
Take it easy
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and provide commented, minimal, self-contained,
write.csv(mydata, file="mydataExported.csv", na="")
On 13.07.2011 12:46, syrvn wrote:
Dear group,
I am working on a rather big project where the output data frames have
dimensions of 3000 x 15 or greater. We are using xlsx and xlsx2 to write the
data.frames to Excel sheets.
Since recently we
The most safe way work with excel is through .csv format
Sorry for being nonspecific
On 13.07.2011 12:46, syrvn wrote:
Dear group,
I am working on a rather big project where the output data frames have
dimensions of 3000 x 15 or greater. We are using xlsx and xlsx2 to write the
data.frames to E
Hello to everybody
I have vector of drug dosage in string format
1.5 mg , 50 mg , 100 mg , 0.5 mg ...
The task is to remove last free symbols: ' mg'
Any suggestions are highly appreciated
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Why don't try as.formula() function
On 22.06.2011 01:22, Rita Carreira wrote:
Dear List Members,I am trying to set up a large system of equations and I am
trying to find a simple way to set up the list command under the package
system fit. Here is the example from system fit and what I am try
IMHO: 'as.numeric(as.character' is very reasonable suggestion
On 22.06.2011 01:16, bill.venab...@csiro.au wrote:
..or something like that. Without more details it is hard to know just what is
going on.
Firstly in R the object is a 'data frame' (or object of class "data.frame" to
be formal).
Hi
Sorry, can't answer your question
However, I had exactly the same problem and just came back to my
spreadsheet redactor and changed the format of cells
Denis
I'm trying to convert data from character to numeric.
I've imported data as a csv file, I'm assuming that the import is a
database
This should work also
data.frame(ls())
rm(list=ls()[-5]) #for instance
On 13.04.2011 01:45, Rolf Turner wrote:
> On 13/04/11 09:49, Denis Kazakiewicz wrote:
>> On 13.04.2011 00:39, Jim Silverton wrote:
>>> How do I remove all objects except one in R?
>>>
>&g
On 13.04.2011 00:39, Jim Silverton wrote:
How do I remove all objects except one in R?
rm(list=ls()) #will remove ALL objects
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Dear Petr
Thank you very much
У Няд, 27/03/2011 у 22:23 +0200, Petr Savicky піша:
> On Sun, Mar 27, 2011 at 10:12:38PM +0300, Denis Kazakiewicz wrote:
> > Hello
> >
> > How to export data frame to file which can be used by gnuplot?
>
> Hello:
>
> Try the follo
Hello
How to export data frame to file which can be used by gnuplot?
P.S. Sorry for naive question
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ta
>
> On Fri, Mar 25, 2011 at 1:24 AM, Denis Kazakiewicz
> wrote:
> > Hello
> > I simply want to plot two variables against one 'year' variable in
> > qplot.
> > Is any way of doing this without reshaping data in long format a
Hello
I simply want to plot two variables against one 'year' variable in
qplot.
Is any way of doing this without reshaping data in long format and using
facet function afterwards?
Thank you
Denis
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Hello
I simply want to plot two variables against one 'year' variable in
qplot.
Is any way of doing this without reshaping data in long format and using
facet function afterwards?
Thank you
Denis
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Hello
I simply want to plot two variables against one 'year' variable in
qplot.
Is any way of doing this without reshaping data in long format and using
facet function afterwards?
Thank you
Denis
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У Срд, 09/03/2011 у 23:29 -0800, Dennis Murphy піша:
> Hi:
>
> Here's one approach, although I imagine there are more efficient ways.
>
> # A function to strip spaces and return the first three non-blank elements
> of a string
> keyset <- function(x) substr(gsub(' ', '', x)[1], 1, 3)
Hello to ev
Dear [R] people
Could you please help with following
How to convert a vector
'ac','ac','c','ac','ac','c'
into a single string
'ac2_c_ac2_c'
Thank you in advance
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PLEAS
Dennis
>
> On Fri, Feb 25, 2011 at 5:39 AM, Marc Schwartz
> wrote:
> On Feb 24, 2011, at 4:50 PM, Denis Kazakiewicz wrote:
>
> > Dear R people
> > Could you please help with following
> >
> >
Dear R people
Could you please help with following
Trying to compare accuracy of tumor size evaluation by different
methods. So data looks like
id true metod1 method2 ...
1 22 2.5
2 1.5 2 2
3 22 2
etc.
Could you please give a hint how to deal with that.
Seems like
For the sake of simplicity I've made your data example
idd d1 d2 d3 d4
1 a d b c
2 a d v h
3 c b v NA
4 q v NA f
df <- read.table('clipboard', header = TRUE,na.strings="NA")
df
Dear Andrew Halford
Here just merely a suggestion of R newbie without sufficient statistical
background
MCMCpoisson from package MCMCpack
Could you please lately post the answer to your very interesting
question when you will find it.
Wit best regards
Denis
У Аўт, 08/02/2011 у 14:38
Try to use formula notation and use na.action=na.pass
It is all described in the help(aggregate)
У Няд, 06/02/2011 у 14:54 -0600, Gene Leynes піша:
> On Fri, Feb 4, 2011 at 6:54 PM, Ista Zahn wrote:
>
> > >
> > > However, I don't think you've told us what you're actually trying to
> > > accompl
Dear Łukas
Thank you very much
...FOR EACH ROW...
That's cool
data2elrm<-cbind(mydata,n=1)
With best regards
Denis
У Пят, 04/02/2011 у 22:16 +0100, Łukasz Ręcławowicz піша:
>
>
> 2011/2/4 Den
> To use elrm() I have to aggregate my data,which is really time
> consuming
>
Dear Brad
Dear Jinko
Dear David
Sorry for the noise out of nothing.
It was because of my ignorance and misunderstanding of algorithms of
elrm.
elrm is great for the assessment of multivariable model where Stata
simply runs out of memory fails, while Stata can make exact calculations
on one variab
Dear Łukasz
Thank you very much for information
Dear R people could you please help please with following questions
Sorry for my silly questions, because I am not a mathematician.
1. Is elrm() works similar as exact regression in SAS or Stata? After
double check in Stata and R some results from m
Dear R people
Could you please help
I have similar but opposite question
How to reshape data from DF.new to DF from example, Mark kindly
provided?
Thank you
Denis
On Пят, 2011-02-04 at 07:09 -0600, Marc Schwartz wrote:
> On Feb 4, 2011, at 6:32 AM, D. Alain wrote:
>
> > Dear R-List,
> >
> >
Hi to all R community
Does anybody know good R packages/books dedicated to efficient usage of
R in pharmacoepidemiological research?
Thank you in advance
--
Denis Kazakiewicz
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Hi
Trying to work out that:
Each person can take from 1 to 9 drugs. And data frame looks like
id drug
1 d
2 g
2 d
2 r
3 e
3 a
...
Q: How many drugs one person takes on average?
Thank you
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