Hi people,
I need reorganization several databases. I would like to know if that is
possible in R. My problem is like that:
original data base:
Age x1980 x1981
1 5 8
3 7 9
5 9 15
7 11 20
future data base
yearage x
19801 5
Hello,
is't possible to get excerptions of data frame using some contstraints,
something like q1 = q[q$V31] ?
Regards,
Oleg
_
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute,
Bernardo Rangel Tura tura at centroin.com.br writes:
: original data base:
:
: Age x1980 x1981
: 1 5 8
: 3 7 9
: 5 9 15
: 7 11 20
:
: future data base
:
: yearage x
: 19801 5
: 19803 7
: 19805 9
: 1980
Yes it is!
you should write:
q1 - q[q$V31,]
Since the data.frame has two indices, the first one indicating rows, which
is what you need!
Regards,
Ales Ziberna
- Original Message -
From: Oleg Bartunov oleg@sai.msu.su
To: R-help R-help@stat.math.ethz.ch
Sent: Saturday, March 12, 2005 1:29
In real world, data manipulation might take even longer time and more
effort than statistical analysis and modeling.
Does anyone know a good book and tutorial about data manupulation?
Thank you so much.
--
WenSui Liu, MS MA
Senior Decision Support Analyst
Division of Health Policy and Clinical
[EMAIL PROTECTED] wrote:
Hi can someone help me with the following warning message I got when I
used two
way anova: Warning messages: 1: Models with response NULL removed because
response differs from model 1 in: anova.lmlist(object, ...) 2: Models with
response NULL removed because response
Hallo,
Am Samstag, 12. März 2005 15:08 schrieb Wensui Liu:
In real world, data manipulation might take even longer time and
more effort than statistical analysis and modeling.
Does anyone know a good book and tutorial about data manupulation?
Thank you so much.
Well, it would be much easier
Clark Allan wrote:
hi
thanx for the help. i dont want to use matrices. i solve my problem, see
the example below.
the set.seed is used because in my actual application i need to generate
INDEPENDENT variables. will this ensure that the variables are
independent?
Why do you want to set.seed()
Oleg Bartunov wrote:
Hello,
is't possible to get excerptions of data frame using some contstraints,
something like q1 = q[q$V31] ?
Yes, but you have to use the indexing matrix-like (see the manuals):
q1 - q[q$V3 1, ]
Uwe Ligges
Regards,
Oleg
Brand new Mac OS X user, I am transfering my R stuffs from my windows
machine.
When porting some of my functions, I got messages such as :
2005-03-12 15:37:52.456 R[673] *** NSTimer discarding exception
'NSRangeException' (reason '*** NSRunStorage, _NSBlockNumberForIndex():
index (3607)
Tracy Bergemann wrote:
Dear list,
I've had difficulty saving my workspace to an .RData file.
This causes considerable frustration as it means that I have to regenerate
my analysis every time I want to update it. For microarray data in
particular, this can be quite time consuming.
I'm saving my
Chris Bergstresser wrote:
Hi all --
I tried loading a data file with the following command:
data = read.table(filename.txt, header = TRUE, sep = ,)
This appeared to work fine, except it silently skipped 400 records
(out of 1200). It turns out, some of the text fields included quotes,
Dieter Menne wrote:
The following problem seems to be Windows-specific. Deepayan informed me
that it cannot be reproduced on platform i386-pc-linux-gnu.
-
library(lattice)
trellis.device(png, file=sepal%02d.png,color=T, theme=col.whitebg)
p=xyplot(Sepal.Length + Sepal.Width ~ Petal.Length +
Lakshmi Dhevi Baskar wrote:
Hi All
i would like to get some help on how to use the persp() for 3d surface plotting with the data from txt file.
it has format like
x1 y1 z1
x2 y2 z2
x3 y3 z3
and so on...sometimes the txt file data may be very large also..
how could i load
Owen Buchner wrote:
I have two questions for you. Firstly I'm having troubles trying to plot more
then 1 graph. I'm attempting to make a plot with 9 panels, but i have no clue
what type of code to use.
See ?par and its argument mar, or ?layout, or even better the latice
package.
Secondly i
Chris Jackson wrote:
In my experience these are usually signs of an error in your NAMESPACE
file, such as a function name in the NAMESPACE which does not match the
function name in the package.
If the NAMESPACE is not the problem (is it???) there are several other
points - one has to look closer.
Hello,
I've the following setting:
(1) Data from a source without truncation (x)
(2) Data from an other source with left-truncation at threshold u (xu)
I have to fit a model on these these two sources, thereby I assume that both
are drawn from the same distribution (eg
Just to make sure, do you have any information on events when xu
u, i.e. do you know how many such events and you know u for those
events? If yes, then that's called censoring, not truncating. For
that, the survival package seems pretty good. I found the information
in Venables and
Hi!
I've searched quite a while and this is probably a
very easy question: How do I
prevent a new hist() histogram from clearing the chart
window before drawing?
I would like to have several histograms simply drawn
on each other in one chart...
Thanks for your help!
Werner
In use: win2ksp4
I am sorry that I did not state my question clearly.
What I mean by data manipulation includes sort, merge, aggregate,
transpose, data export and import, format, date time handle, and so
on, which might be not important to statistician.
I have use SAS and SPSS for a while and really want to
Dear All,
As some of you in the archive, i am experiencing problems in using
RODBC with IODBC on Mac OS X Panther.
I am currrently facing two problems.
The first one is apparently linked with IODBC (according to returned R
error message) although testing the database access from IODBC manager
On Saturday 12 March 2005 14:42, Wensui Liu wrote:
I am sorry that I did not state my question clearly.
What I mean by data manipulation includes sort, merge, aggregate,
transpose, data export and import, format, date time handle, and so
on, which might be not important to statistician.
I
Have you looked at these two packages that, together, provide Postgres
access and do not require ODBC? I have found them quite useful and I use
them on Panther:
http://www.bioconductor.org/repository/release1.5/package/html/Rdbi.html
I am looking for code that allows for a more flexible negative binomial
model (similar to Stata's gnbreg).
In particular, I am looking to be able to model the ancillary
shape parameter in terms of a series of covariates. So if,
y[i] ~ poisson(mu[i])
mu[i] = exp(x[i]beta +
On 12 March 2005 at 15:42, Wensui Liu wrote:
| I am sorry that I did not state my question clearly.
|
| What I mean by data manipulation includes sort, merge, aggregate,
| transpose, data export and import, format, date time handle, and so
| on, which might be not important to statistician.
R
Wensui,
Here is an answer from a different perspective.
Reading between the lines, you may be involved in
'remedial' data preparation at times. Depending on
exactly what kind of tasks you are talking about you
MAY be well advised to work in a database--that is why
they exist. It just depends on
Dear all R-helpers,
I understand all the actions of operation in R objects stored in the active
memory of the computer.Could I do some opreation in active memory,what does
the structure of active memory looks like?
for exmple : in R : a- 2 ; capture.output(a) ; I can get the output and
change
Dear all R-helpers,
I understand all the actions of operation in R objects stored in the active
memory of the computer.Could I do some opreation in active memory,what does
the structure of active memory looks like?
for example : in R : a- 2 ; capture.output(a) ; I can get the output and
change
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