Displaying 20 results from an estimated 1000 matches similar to: "Yule Kendall resistant measure of skewness"
2008 Jul 18
2
Landscape mode for pdf
Dear R Users,
I would like to get the pdf() command to create graphics in landscape
mode, as I am plotting 8 graphs in 2 rows and 4 columns. This is being
generated for an a4 printer (so I also use the paper="a4" command). Is
there a way I can ask pdf() to generate the document in landscape mode ?
Thanks,
Tolga
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and it
2008 Jun 06
3
col.names ?
Dear R Users,
A bit of an elementary question, but somehow, I haven't been able to
figure it out. I'd like to changes the column names of a data frame, so I
am looking for something like col.names (as in row.names). Could someone
please show me how to change the column names of a data frame ?
Thanks,
Tolga
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and it is
2008 Jul 07
2
Sorting a list
Dear R Users,
A bit of a simple question, but I could not find the answer thru google
("sorting lists r cran","how can i sort a list r cran") or RSiteSearch...
how can I sort a list ?
One imagines something like sort.list would do the job, but that's not the
one.
> foo<-list(a=10,b=2,c=3)
> sort.list(foo)
Error in sort.list(foo) : 'x' must be atomic
2008 Jul 08
6
Automatic placement of Legends
Dear R-Users,
I am looking for a way to get legends placed automagically in an empty
spot on a graph. Additional complication comes through my useage of
multiple graphs on the same plot through mfrow.
Is there a way to achieve this in R ? I have legends for each of the
sub-plots.
Many thanks in advance,
Tolga
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and it is not
2008 Jun 19
4
How can I execute a .R/script file
Dear R-Users,
I've written a number of functions in a .R/script file. I would like to
call those functions from another script file. How can I execute all the
code in a script file so that the functions are available for use in my
other script file ?
I have tried help.search("script") and various Google alternatives but
couldn't come up with anything.
Thanks in advance,
2008 Aug 04
2
Long Range Dependence: Hurst exponent estimation
Dear R Users,
Can anyone point me to a package for R vrsion 2.7.1 which implements some
Hurst exponent estimation methods ?
Thanks in advance,
Tolga
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and it is not intended as an offer or solicitation for the purchase
or sale of any financial instrument or as an official confirmation
of any transaction. In the event you are
2008 Dec 08
1
statistics on "runs" of numbers
Dear R Users,
Is there a package or some functionality in R which returns statistics on
"runs" of numbers, i.e. series of numbers with similar qualities in a time
series ? For example, the number of +ves,-ves, histograms on cumulations
in runs, etc. ?
Thanks in advance,
Tolga
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and it is not intended as an offer or
2008 Dec 17
3
replacing elements of a zoo object
Dear R Users,
I am trying to do something quite simple: replace the elements of a zoo
object. For some reason, the following code does not seem to work. How can
I replace the value for the 14th of Dec of 2008 in the zoo object x below
with 1 (it is currently NA).
> x
2008-12-11 2008-12-12 2008-12-13 2008-12-14 2008-12-15 2008-12-16
361.667 389.875 NA NA 397.822
2008 Jun 28
1
Converting the results of granger.test into a matrix
Dear R Users,
The granger.test command in the MSBVAR package estimates all possible
bivariate Granger causality tests for m variables. If one passes a data
frame with 3 rows, it returns 6 granger tests in two rows, one for the
F-statistic and another for the p-value.
For example:
> a<-rnorm(1:10)
> b<-c(lag(a),rnorm(1))
> c<-c(lag(b),rnorm(1))
>
2008 Jul 14
1
options() question for displaying numbers in the GUI
Dear R Users,
I would like the R GUI to display numbers with comma separators, i.e.
1,000,000.00
instead of
1000000
Is there a flag in option() for this behaviour. A google/RSiteSearch has
not revealed anything but perhaps I have missed it.
Thanks in advance,
Tolga
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and it is not intended as an offer or solicitation for the
2008 Oct 02
2
error message documentation: "Error: no function to return from, jumping to top level"
Dear R Users,
Are error messages in R documented somewhere ? I am getting the following
error message and would like to track down what it means and which
specific routine triggers it:
Error: no function to return from, jumping to top level
Once I figure out which snippet of code triggers it, I can submit to the
list a working example in case I cannot get to the bottom of the problem
2008 May 23
1
Cleaning a time series
Dear R Users,
Was wondering if anyone can give me pointers to functionality in R that
can help "clean" a time series ? For example, some kind of
package/functionality which identifies potential "errors" and takes some
action, such as replacement by some suitable value (carry-forward, average
of nearest, what have you) and reporting of errors identified.
I did search
2008 Jul 18
1
creating names for lists
Dear R Users,
How can I create names for lists within a function where the name itself
is a function of several variables ?
> a<-1
> b<-2
> paste(a,b)
[1] "1 2"
> foo<-list(paste(a,b)=3) <<<===== DOES NOT WORK
Error: unexpected '=' in "foo<-list(paste(a,b)="
> eval(paste(a,b))
[1] "1 2"
>
2008 Aug 17
2
grangertest/lmtest ... what am I doing wrong ?
Dear Achim, R Users,
What am I doing wrong in this example ?
a<-zoo(rnorm(100),order.by=1:100)
b<-lag(a)
regr<-na.exclude(merge(a,b))
plot(regr)
grangertest(regr[,1],regr[,2],3)
> a<-zoo(rnorm(100),order.by=1:100)
> b<-lag(a)
> regr<-na.exclude(merge(a,b))
> plot(regr)
> grangertest(regr[,1],regr[,2],3)
Error in solve(vc[ovar, ovar]) : subscript out of bounds
2008 Sep 08
1
cluster/snow question
Dear R Users,
I am attempting to use the snow package for clustering. Is there a way to
identfy, in the environment of each node, a rank for that node and also,
the total size of the cluster ?
By way of analogy, I am looking for the functions in snow equivalent to
mpi.comm.rank() and mpi.comm.size() from RMPI, in case that makes things
clearer.
Thanks in advance,
Tolga
Generally, this
2007 Nov 26
1
Pls delete this off the internet IMMEDIATELY
http://groups.google.com/group/linux.samba/browse_thread/thread/d669e5e24f24e1f6/236c73e8a362b5e6?hl=en&q=jpmchase.com#236c73e8a362b5e6
-----------------------------------------
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intended as an offer or solicitation for the purchase or sale of
any financial instrument or as an official confirmation of any
transaction. All market
2008 Sep 09
2
Information on the number of CPU's
Dear R Users,
I am on Windows XP SP2 platform, using R version 2.7.2 . I was wondering
if there is a way to find out, within R, the number of CPU's on my machine
? I would use this information to set the number of nodes in a cluster,
depending on the machine. Sys.info() and .Platform do not carry this
information.
Thanks in advance,
Tolga Uzuner
Generally, this communication is for
2008 Jul 15
1
Supressing printing from a function: ecdf
Dear R Users,
I am trying to suppress the information printed by the ecdf function
during an assignment. Various alternatives have failed me so far:
> a=summary(ecdf(rnorm(100)))["1st Qu."]
Empirical CDF: 100 unique values with summary
> invisible(a=summary(ecdf(rnorm(100)))["1st Qu."])
Empirical CDF: 100 unique values with summary
> (function()
2008 Nov 04
4
fine grain tick marks for zoo plots
Dear R Users,
I am trying to get plot.zoo to place monthy tickmarks/labels for a time
series which spans daily data going back a bit over a year. Right now, I
am getting only one tick mark on the x-axis for the beginning of 2008. How
can I force plot.zoo to place more regular x-axis tick marks on a monthly
basis ?
Thanks in advance,
Tolga
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2008 Jul 02
1
Problem with strucchange package
Dear R Users,
I am attempting to use the strucchange package but get an error which is
difficult to decipher.
I get the following error with breakpoints:
> bp<-breakpoints(regr[,1]~regr[,2]+regr[,3])
Error in my.RSS.table[as.character(i), 3:4] <- c(pot.index[opt],
break.RSS[opt]) :
nothing to replace with
I was wondering if anyone has seen this issue before and off the top of