[R] Accessing Havers data from R?
Hi R,
Do we have R package to extract data from Havers data provider? For
example, just like we have RBloomberg package to extract data from
Bloomberg.
If not are there any other mechanisms to extract the data from Havers?
Thanks and Regards,
Shubha.
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[R] Dates when transferred from RExcel to R.
Hi R,
The dates when exported from Excel to R by Put R Var, gives one less
day.
For example,
1.Let 1/1/2011 be the cell A1 in date format.
2.Right click and select Put R Var and give a name to it say,
StartDate (R in foreground process)
3.In the R console see the value stored in StartDate
4.The output is:
StartDate
[1] 2010-12-31 23:30:00 IST
Please note that this output is 30 minutes less than the actual date.
Why is this?
Thanks and Regards,
Shubha
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Re: [R] KMedians clustering in R
Thanks all. But I was looking for KMedian algorithm and not the KMedoids
algorithm. The wiki says, Note that this algorithm is often confused with
k-medoids, which finds the optimal medoid, not median, for each cluster. (A
medoid is an actual point from the dataset; a median is the mathematical median
calculated separately for each dimension.)
Any package which does KMedian clustering algorthm? Many Thanks.
Regards,
Shubha.
-Original Message-
From: Christian Hennig [mailto:chr...@stats.ucl.ac.uk]
Sent: Thursday, September 16, 2010 9:32 PM
To: Shubha Vishwanath Karanth
Cc: r-help@r-project.org; r-h...@stat.math.ethz.ch
Subject: Re: [R] KMedians clustering in R
pam/clara in package cluster are probably as close to it as you can be.
There is no unique definition of a multivariate median and therefore there
is no unique definition of k-medians, but pam/clara is one possible
version of it. (Of course if you think of k-medians as defined in a
specific paper, it may still be something slightly different.)
Christian
On Thu, 16 Sep 2010, Shubha Vishwanath Karanth wrote:
Hi R,
Is there a package in R to perform KMedian clustering?
Thanks.
Shubha
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*** --- ***
Christian Hennig
University College London, Department of Statistical Science
Gower St., London WC1E 6BT, phone +44 207 679 1698
chr...@stats.ucl.ac.uk, www.homepages.ucl.ac.uk/~ucakche
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[R] KMedians clustering in R
Hi R,
Is there a package in R to perform KMedian clustering?
Thanks.
Shubha
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[R] Robust Regression + Stepwise
Hi R,
Can I perform a stepwise method for robust regression? In other words,
how do I combine the methods step and rlm together?
Thanks and Regards,
Shubha
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[R] Stepwise Regression + entry/exit significance level
Hi R,
Does the step function used to perform stepwise regression has the
option to specify the entry/exit significance levels for the independent
variables? (This is similar to the 'slentry' and 'slstay' option in
'Proc reg' of SAS.). Or do we have any other package which does the
above? Thanks.
Thanks and Regards,
Shubha
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[R] Maximum seasonal 'q' parameter
Hi R,
Seems like the maximum seasonal 'q' parameter for the ?arima is 350. Any
way, where we can increase this? Since I am working on 3 year (q=252*3)
and 5 year(q=252*5) returns, I may require this option. Thanks.
fit=arima(r,c(3,0,0),seasonal = list(order = c(0, 0, 500), period =
NA));tsdiag(fit);fit$aic
Error in makeARIMA(trarma[[1L]], trarma[[2L]], Delta, kappa) :
maximum supported lag is 350
Thanks,
Shubha
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[R] as.dendrogram for DICE coefficient.
Hi R,
I was using 'as.dendrogram' with the DIST coefficient, where the smaller
values of the DIST coefficient, say that the objects are closer to each
other, while the larger values of the coefficient say that the objects
are far from each other.
But now, I have my coefficient as the DICE coefficient(in some sense
similar to correlation coefficient), where the larger coefficient value
indicates closer objects, while the small coefficient values indicate
farther objects. But, once I draw the dendrogram, the initial groupings
happens to the smaller DICE coefiicients and then to the larger, which
should not be the case, because, the objects with larger coefficients
are closer to each other than the smaller. How do I say the
as.dendrogram to group the objects for larger values of the DICE
coefficient?
Thanks,
Shubha
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[R] Transformation of Y changes the 'lm' object?
Hi R,
This is a problem, which I have tried to present in a simple way:
Let,
x1=1:10
x2=2:11
y=2+3*x1
lm_obj=lm(y~x1+x2)
lm_obj
step(lm_obj) # Step function for the first time
y=y^0.1
lm_obj
step(lm_obj) #Step function after a transformation on Y, but 'lm_obj' is not
modified.
The two step function behave differently. The first one is before the
transformation on 'Y', the dependent variable and the second step function is
after the transformation. But, please note that I have NOT changed the 'lm_obj'
at all after the transformation at all. So, I was wondering, since I have not
changed the 'lm_obj', I should get both stepwise results as the same. Or does
the transformation of Y, changes the 'lm_obj' without actually specifying?
Thanks for the clarifications.
Thanks and Regards,
Shubha Karanth | Amba Research
Ph +91 80 3980 8435 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
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[R] Extreme Value Regression model
Hi R,
Just like a Poisson regression model, is there a package in R to do
Extreme Value Regression model? Thanks.
Thanks and Regards,
Shubha Karanth
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Re: [R] Extreme Value Regression model
Thanks. But they don't speak of the extreme value distribution like Gumbel,
Frechet or Weibull
Thanks and Regards,
Shubha Karanth | Amba Research
Ph +91 80 3980 8435 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Richardson, Patrick [mailto:patrick.richard...@vai.org]
Sent: Thursday, July 15, 2010 5:56 PM
To: Shubha Vishwanath Karanth; r-help@r-project.org; r-h...@stat.math.ethz.ch
Subject: RE: Extreme Value Regression model
Well, RSiteSearch(extreme value regression) turns up quite a few relevant
posts including one on package XReg. . . for extreme value regression.
Patrick
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Shubha Vishwanath Karanth
Sent: Thursday, July 15, 2010 2:27 AM
To: r-help@r-project.org; r-h...@stat.math.ethz.ch
Subject: [R] Extreme Value Regression model
Hi R,
Just like a Poisson regression model, is there a package in R to do
Extreme Value Regression model? Thanks.
Thanks and Regards,
Shubha Karanth
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The information transmitted is intended only for the per...{{dropped:16}}
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[R] R user interface
Hi R,
I have a an excel file with a lot of data. I need to create an user
interface in R, which has one single screen. It needs to contain a right
pane containing the click buttons for different countries (say). If the
user clicks a country, then a chart needs to be created for that
country, taking the data from Excel. Is this possible and which package
helps me in doing this? Many thanks in advance.
Thanks and Regards,
Shubha Karanth
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[R] fgev + negative location parameter for positive data?
Hi R,
I have a vector with all positive values and have fit the GEV
distribution (shape parameter=0) to the data and I get the negative
value of the location parameter. Is this possible?
library(evd)
r=read.table(clipboard,header=F)[,1]
length(r)
[1] 2087
sum(r=0) #All data points are positive
[1] 2087
sum(r=100) #All data points are positive
[1] 2087
Now,
fgev_fit=fgev(r,std.err = FALSE)
fgev_fit
Call: fgev(x = r, std.err = FALSE)
Deviance: 82397.2
Estimates
loc scale shape
-1.977e+07 1.141e+08 1.555e-02
Optimization Information
Convergence: successful
Function Evaluations: 30
Gradient Evaluations: 5
When all the values in the data are positive, how can the location
parameter of the fit be negative? Or is it something to do with the
large deviation? Please let me know, whether my assumptions are correct.
Thanks and Regards,
Shubha Karanth
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[R] F-statistic in ARIMA model
Hi all,
Can I get the F-statistic from the arima() option? Or at least the
residual degrees of freedom in the arima()? Or do I have to convert the
ARIMA model back to the regression model and then get the F-statistic?
Thanks.
Thanks,
Shubha
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[R] Creating R exe files
Hi all,
Just like Fortran creates EXE files for a code, can R also do the same? Thanks
for the info.
Thanks and Regards,
Shubha Karanth | Amba Research
Ph +91 80 3980 8283 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
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[R] DICE Coefficient of similarity measure
Hi,
I wanted the DICE coefficient (similarity measure for binary variables)
to be calculated in R and found that the igraph package has the option
of similarity.dice to do this. But, for this command, the input object
should be an igraph object. But, I have a dataframe of columns
containing 1's and 0's. Can I convert this dataframe into an igraph
object, so that the DICE coefficient can be reproduced? Or does any
other packages gives the DICE coefficient?
Thanks,
Shubha
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[R] table command
Hi,
Let s be a dataframe.
s
A B C
0 0 1
1 0 1
1 0 1
0 0 1
1 0 1
0 1 1
0 1 1
0 1 1
0 0 1
tab1=table(s[,c(1,2)])
tab1
B
A 0 1
0 3 3
1 3 0
tab2=table(s[,c(1,3)])
tab2
C
A 1
0 6
1 3
The problem is I need to access frequency corresponding to (0,0).
tab1[1] will give me the correct value while tab2[1] will not give the
frequency which I expected. So, is there a possibility in the table
command to have the order of tab1 and tab2 being equal? (here 2*2). May
be by filling in the appropriate value as 0 or NA?
Thanks,
Shubha
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Re: [R] DICE Coefficient of similarity measure
Just wrote a small piece of code to do so. Thanks.
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On Behalf Of Shubha Vishwanath Karanth
Sent: Saturday, April 24, 2010 6:28 PM
To: r-help@r-project.org; r-h...@stat.math.ethz.ch
Cc: gabor.csa...@unil.ch
Subject: [R] DICE Coefficient of similarity measure
Hi,
I wanted the DICE coefficient (similarity measure for binary variables)
to be calculated in R and found that the igraph package has the option
of similarity.dice to do this. But, for this command, the input object
should be an igraph object. But, I have a dataframe of columns
containing 1's and 0's. Can I convert this dataframe into an igraph
object, so that the DICE coefficient can be reproduced? Or does any
other packages gives the DICE coefficient?
Thanks,
Shubha
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i...{{dropped:13}}
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http://www.R-project.org/posting-guide.html
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[R] Time series cross-sectional regression analysis
Hi all,
Is there a package in R to perform time series cross-sectional regression
analysis (like the TSCSREG procedure in SAS)? Thanks for the info.
Thanks and Regards,
Shubha Karanth | Amba Research
Ph +91 80 3980 8283 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
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[R] Scores in Dimensions in Correspondence Analysis
Hi R,
I was experimenting with the CA package for correspondence analysis.
data(author)
ca(author)
plot(ca(author))
How can I get the values used by the plot for the two axis for biplot?
In other words, how will I be able to obtain the scores in the
dimensions (which are obtained by PCA) of the graphs? Thanks.
Thanks and Regards,
Shubha
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Re: [R] Scores in Dimensions in Correspondence Analysis
Does the $rowcoord and $colcoord help?
Thanks and Regards,
Shubha Karanth
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On Behalf Of Shubha Vishwanath Karanth
Sent: Sunday, January 03, 2010 6:25 PM
To: r-help@r-project.org
Subject: [R] Scores in Dimensions in Correspondence Analysis
Hi R,
I was experimenting with the CA package for correspondence analysis.
data(author)
ca(author)
plot(ca(author))
How can I get the values used by the plot for the two axis for biplot?
In other words, how will I be able to obtain the scores in the
dimensions (which are obtained by PCA) of the graphs? Thanks.
Thanks and Regards,
Shubha
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i...{{dropped:13}}
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Re: [R] Scores in Dimensions in Correspondence Analysis
Got that...
Thanks and Regards,
Shubha Karanth | Amba Research
Ph +91 80 3980 8283 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Shubha Vishwanath Karanth
Sent: Sunday, January 03, 2010 6:30 PM
To: r-help@r-project.org
Subject: Re: [R] Scores in Dimensions in Correspondence Analysis
Does the $rowcoord and $colcoord help?
Thanks and Regards,
Shubha Karanth
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On Behalf Of Shubha Vishwanath Karanth
Sent: Sunday, January 03, 2010 6:25 PM
To: r-help@r-project.org
Subject: [R] Scores in Dimensions in Correspondence Analysis
Hi R,
I was experimenting with the CA package for correspondence analysis.
data(author)
ca(author)
plot(ca(author))
How can I get the values used by the plot for the two axis for biplot?
In other words, how will I be able to obtain the scores in the
dimensions (which are obtained by PCA) of the graphs? Thanks.
Thanks and Regards,
Shubha
This e-mail may contain confidential and/or privileged
i...{{dropped:13}}
__
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http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
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[R] Digitizing the Plot
Hi R,
Wanted to check if there are any packages available for getting the
(x,y) data points of a graph or a plot, which is in the image format.
Say, the plot could be a published report, and I want to get the points
of the curve plotted. (I am speaking something related the subject
discussed in http://www.uniphiz.com/digitizing.htm)
Thanks,
Shubha
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[R] Built-in Code behind SVM
Hi R,
I need to see the inner code behind the function svm in the package
e1071. I enter svm in the console and get the below output.
svm
function (x, ...)
UseMethod(svm)
environment: namespace:e1071
Is there any way I can look into the code of what svm (support vector
machine) is doing?
Thanks a lot for your help...
Thanks and Regards, Shubha
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Re: [R] Have a function like the _n_ in R ? (Automatic count function)
temp=data.frame(a=c(4,3,2,6),b=c(7,4,2,4))
temp
a b
1 4 7
2 3 4
3 2 2
4 6 4
temp$counter=1:nrow(temp)
temp
a b counter
1 4 7 1
2 3 4 2
3 2 2 3
4 6 4 4
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Nash
Sent: Wednesday, February 25, 2009 5:55 PM
To: r-help
Subject: [R] Have a function like the _n_ in R ? (Automatic count function)
Have the counter function in R ?
if we use the software SAS
/*** SAS Code **/
data tmp(drop= i);
retain seed x 0;
do i = 1 to 5;
call ranuni(seed,x);
output;
end;
run;
data new;
counter=_n_; * this keyword _n_ ;
set tmp;
run;
/*
_n_ (Automatic variables)
are created automatically by the DATA step or by DATA step statements.
*/
/*** Output
counter seed x
1 5840432880.27197
2 9359029630.43581
3 3018795230.14057
4 7532125980.35074
5 1607264573 0.74844
/
Have a function like the _n_ in R ?
--
Nash - morri...@ibms.sinica.edu.tw
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[R] Calling R from SAS
Can I call R from SAS? I tried the below command in SAS, but not
working...
OPTIONS XWAIT XSYNC;
X C:\Program Files\R\R-2.7.1\bin\R.exe --no-save -quiet
C:\TEMPO\program.r C:\TEMPO\program.log;
Had done this before and it was working perfect... But now, not...
Sorry if this query was supposed to be put in SAS mailing list. But
thought if someone would have worked with this, can help...
Thanks for your help,
Shubha
This e-mail may contain confidential and/or privileged i...{{dropped:13}}
__
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Calling R from SAS
Got it working... Just that the R code file's extension was missing in the
physical folder...
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Shubha Vishwanath Karanth
Sent: Saturday, January 24, 2009 6:58 PM
To: r-h...@stat.math.ethz.ch
Subject: [R] Calling R from SAS
Can I call R from SAS? I tried the below command in SAS, but not
working...
OPTIONS XWAIT XSYNC;
X C:\Program Files\R\R-2.7.1\bin\R.exe --no-save -quiet
C:\TEMPO\program.r C:\TEMPO\program.log;
Had done this before and it was working perfect... But now, not...
Sorry if this query was supposed to be put in SAS mailing list. But
thought if someone would have worked with this, can help...
Thanks for your help,
Shubha
This e-mail may contain confidential and/or privileged i...{{dropped:13}}
__
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https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
This e-mail may contain confidential and/or privileged i...{{dropped:10}}
__
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Downloading Reuters data from R
Thank you very much for this. But since I don't know much of DLL, I am
kind of a stuck with how to proceed with 'reuters_ts1.zip'. This zip
file contains the 'reuters_ts.dll' file.
dyn.load(reuters_ts.dll) generates the error,
dyn.load(Z:\\reuters_ts1\\package\\reuters_ts.dll)
Error in inDL(x, as.logical(local), as.logical(now), ...) :
unable to load shared library 'C:/Documents and
Settings/shubhak/reuters_ts1/package/reuters_ts.dll':
LoadLibrary failure: This application has failed to start because the
application configuration is incorrect. Reinstalling the application may
fix this problem.
Where should the 'reuters_ts1.zip' to be stored? And how can I access
'reuters_ts.dll' file for my use? Even checked ?dyn.load, but a bit
confused. How do we use this?
I am sorry, if this troubles. Mine is a Windows XP Config.
Thanks again,
Shubha
-Original Message-
From: rory.wins...@rbs.com [mailto:rory.wins...@rbs.com]
Sent: Thursday, December 11, 2008 9:44 PM
To: Shubha Vishwanath Karanth; r-h...@stat.math.ethz.ch
Subject: RE: Downloading Reuters data from R
Hi Shubha
I have created an extension DLL for downloading time series data from
Reuters. You can download it from here:
http://www.theresearchkitchen.com/blog/archives/287
There is also a short manual available at the same location:
http://www.theresearchkitchen.com/blog/wp-content/uploads/2008/12/intro.
pdf
I am currently in the process of uploading a separate extension DLL for
retrieval of real-time data from Reuters.
Thanks
Rory
Rory Winston
RBS Global Banking Markets
Office: +44 20 7085 4476
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On Behalf Of Shubha Vishwanath Karanth
Sent: 11 December 2008 07:41
To: r-h...@stat.math.ethz.ch
Subject: [R] Downloading Reuters data from R
Hi R,
Can we download Reuters (3000 Xtra) data from R? Does ODBC package help
me in this? Or otherwise, is there a way to extract daily closing prices
data of Reuters from R?
Thank you very much,
Shubha
This e-mail may contain confidential and/or privileged
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[R] Downloading Reuters data from R
Hi R,
Can we download Reuters (3000 Xtra) data from R? Does ODBC package help
me in this? Or otherwise, is there a way to extract daily closing prices
data of Reuters from R?
Thank you very much,
Shubha
This e-mail may contain confidential and/or privileged i...{{dropped:13}}
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[R] Mismatch in logical result?
Hi R,
I have certain checkings, which gives FALSE, but actually it is true. Why does
this happen? Note that the equations that I am checking below are not even the
case of recurring decimals...
1.4^2 == 1.96
[1] FALSE
1.2^3==1.728
[1] FALSE
Thanks in advance, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
This e-mail may contain confidential and/or privileged i...{{dropped:13}}
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R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[R] Row and Column positions
Hi R,
m=data.frame(a=c(1,NA,5,5),b=c(4,5,6,7),c=c(NA,NA,NA,5))
I want to know the methods of getting row and column positions of NA in
the above dataframe. How do I do this?
Thanks, Shubha
This e-mail may contain confidential and/or privileged i...{{dropped:13}}
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] SAS Data
library(foreign)
Rdata=read.ssd(Z:/MyFolder,data1,sascmd = C:/Program Files/SAS/SAS
9.1/sas.exe)
Rdata
Y D1 D2 D3
1 100 1 0 0
2 101 1 0 0
3 105 1 0 0
4 200 0 1 0
5 201 0 1 0
6 205 0 1 0
7 300 0 0 1
8 301 0 0 1
9 305 0 0 1
where 'data1' is the SAS datafile to be read, ' Z:\\MyFolder' is the physical
path where 'data1.sas7bdat' is situated and 'sascmd' refers to the path where
SAS is installed in your system. Please confirm that your SAS is installed in
the same path. Also note that you have to install the 'foreign' package to do
this.
BR, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Stefo Ratino
Sent: Monday, October 13, 2008 5:20 PM
To: r-help@r-project.org
Subject: [R] SAS Data
Hello everybody,
I would like to read a SAS Data data1.sas7bdat in R! Is this possible?
Thank you a lot in advance ;),
Stefo
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and provide commented, minimal, self-contained, reproducible code.
[R] Cross-tabulation Question
Hi R,
This is a cross tabulation question. Suppose that,
d=read.table(clipboard,header=F)
d
V1 V2V3
A One Apple
A One Cake
A One Cake
B One Apple
B One Apple
B One Apple
table(d$V2,d$V3)
Apple Cake
One 42
But, I don't want the count to be like the above. Here, it is counting
the number of rows in that particular category. What I need is in each
category, the count of unique V1's. So, my output should look like,
Apple Cake
One 21
Any ideas please...
Thanks, Shubha
This e-mail may contain confidential and/or privileged i...{{dropped:13}}
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and provide commented, minimal, self-contained, reproducible code.
Re: [R] extracting max row from data matrix
aggregate(x$weight,list(x$fruit),max)
Group.1 x
1 apple 1.6
2 orange 1.6
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Srinivas Iyyer
Sent: Monday, September 08, 2008 7:55 AM
To: [EMAIL PROTECTED]
Subject: [R] extracting max row from data matrix
dear group,
i have a data matrix with some replicate items with different values. I want to
extract the row with max value.
for example:
x
fruit weight
1 apple1.3
2 apple1.5
3 apple1.6
4 orange1.4
5 orange1.6
x is a data frame.
I want to extract unique items from fruits that has max weight.
that is:
3 apple1.6
5 orange1.6
I want to be able to use apply functions. Could some one lend some help please.
Thanks
srini
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[R] To find vector X under contraints
Hi R,
I have the variance-covariance matrix,
V=matrix(c(0.09238, 0.002407527, 0.002407527, 0.020739401),2,2)
I need to find a vector X=c(x1,x2), such that
1) X'VX is equal to a constant 2 (say) and
2) sum(x) should be equal to a another constant 1.5 (say).
How do we do this in R?
BR, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
This e-mail may contain confidential and/or privileged i...{{dropped:13}}
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[R] Between the values
Hi R,
This is a very trivial one
C=0.1
I want to check whether my value of C is between 0 and 1 exclusively
I don't want to use (C0 C1). And I can't use a single statement like
(0C1). Is there a between function? Or how do we specify from 0 to 1?
Does %in% help me?
Many Thanks,
Shubha
This e-mail may contain confidential and/or privileged i...{{dropped:13}}
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Between the values
Or at least anyways of defining a vector/(or something like that) which
has all values between 0 and 1?
For example:
C(0,1) is incorrect, seq(0,1,0.2) is also incorrect, seq(0,1,0.1) is
also incorrect How does one specify this?
Thanks, Shubha
-Original Message-
From: Dan Davison [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 12, 2008 5:54 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Between the values
On Tue, Aug 12, 2008 at 05:16:01PM +0530, Shubha Vishwanath Karanth
wrote:
Hi R,
This is a very trivial one
C=0.1
I want to check whether my value of C is between 0 and 1
exclusively
I don't want to use (C0 C1). And I can't use a single statement
like
(0C1). Is there a between function? Or how do we specify from 0 to
1?
Does %in% help me?
If you don't like (C 0 C 1), then just write your own function
is.between(x, low, high) (NB1 you've basically written it already; NB2
single '' for the vectorised version 'are.between'). People's
personal tastes about what's desirable will vary, and anyway it's good
practice to build up your own personal library of
functions. Ultimately if you have a high quality collection of related
functions for working on a particular sort of problem, then you should
publish them as an R package on CRAN.
Dan
Many Thanks,
Shubha
This e-mail may contain confidential and/or privileged
i...{{dropped:13}}
__
R-help@r-project.org mailing list
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PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
www.stats.ox.ac.uk/~davison
This e-mail may contain confidential and/or privileged i...{{dropped:10}}
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Between the values
Thanks Ravi... But was just wondering if there existed a simple tricky command
for that without using the condition
Also was thinking on my second question that how do we define an interval
between 0 and 1 which contains all the values between 0 and 1.
Thanks, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Ravi Varadhan [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 12, 2008 7:12 PM
To: Shubha Vishwanath Karanth; 'Dan Davison'
Cc: [EMAIL PROTECTED]
Subject: RE: [R] Between the values
Hi Shubaa,
Here is one way to do this:
is.between - function(x, a, b) {
x a x b
}
set.seed(123)
x - rnorm(5)
is.between(x, -1, 1)
is.between(x, -1, 1)
[1] TRUE TRUE FALSE TRUE TRUE
Ravi.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Shubha Vishwanath Karanth
Sent: Tuesday, August 12, 2008 9:25 AM
To: Dan Davison
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Between the values
Or at least anyways of defining a vector/(or something like that) which has
all values between 0 and 1?
For example:
C(0,1) is incorrect, seq(0,1,0.2) is also incorrect, seq(0,1,0.1) is
also incorrect How does one specify this?
Thanks, Shubha
-Original Message-
From: Dan Davison [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 12, 2008 5:54 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Between the values
On Tue, Aug 12, 2008 at 05:16:01PM +0530, Shubha Vishwanath Karanth
wrote:
Hi R,
This is a very trivial one
C=0.1
I want to check whether my value of C is between 0 and 1
exclusively
I don't want to use (C0 C1). And I can't use a single statement
like
(0C1). Is there a between function? Or how do we specify from 0 to
1?
Does %in% help me?
If you don't like (C 0 C 1), then just write your own function
is.between(x, low, high) (NB1 you've basically written it already; NB2
single '' for the vectorised version 'are.between'). People's personal
tastes about what's desirable will vary, and anyway it's good practice to
build up your own personal library of functions. Ultimately if you have a
high quality collection of related functions for working on a particular
sort of problem, then you should publish them as an R package on CRAN.
Dan
Many Thanks,
Shubha
This e-mail may contain confidential and/or privileged
i...{{dropped:13}}
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
www.stats.ox.ac.uk/~davison
This e-mail may contain confidential and/or privileged i...{{dropped:10}}
__
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and provide commented, minimal, self-contained, reproducible code.
This e-mail may contain confidential and/or privileged i...{{dropped:10}}
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Between the values
ThanksDidn't mean actually using '', but not bigger than that too...
I usually see something done much better in R-help by a code which I don't know
at all. So, wanted to know if I am missing somewhere in using some codes which
I am not aware of...so, posted the query...
Thanks for your help, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Ravi Varadhan [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 12, 2008 7:34 PM
To: Shubha Vishwanath Karanth; 'Dan Davison'
Cc: [EMAIL PROTECTED]
Subject: RE: [R] Between the values
Here is how you check whether a x b without using the `' condition:
is.between - function(x, a, b) {
(x - a) * (b - x) 0
}
Ravi.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Shubha Vishwanath Karanth
Sent: Tuesday, August 12, 2008 9:46 AM
To: Ravi Varadhan; Dan Davison; Ravi Varadhan; Dan Davison; Ravi Varadhan;
Dan Davison; Ravi Varadhan; Dan Davison
Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED];
[EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: Re: [R] Between the values
Thanks Ravi... But was just wondering if there existed a simple tricky
command for that without using the condition
Also was thinking on my second question that how do we define an interval
between 0 and 1 which contains all the values between 0 and 1.
Thanks, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510 Bangalore * Colombo * London *
New York * San José * Singapore * www.ambaresearch.com
-Original Message-
From: Ravi Varadhan [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 12, 2008 7:12 PM
To: Shubha Vishwanath Karanth; 'Dan Davison'
Cc: [EMAIL PROTECTED]
Subject: RE: [R] Between the values
Hi Shubaa,
Here is one way to do this:
is.between - function(x, a, b) {
x a x b
}
set.seed(123)
x - rnorm(5)
is.between(x, -1, 1)
is.between(x, -1, 1)
[1] TRUE TRUE FALSE TRUE TRUE
Ravi.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Shubha Vishwanath Karanth
Sent: Tuesday, August 12, 2008 9:25 AM
To: Dan Davison
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Between the values
Or at least anyways of defining a vector/(or something like that) which has
all values between 0 and 1?
For example:
C(0,1) is incorrect, seq(0,1,0.2) is also incorrect, seq(0,1,0.1) is
also incorrect How does one specify this?
Thanks, Shubha
-Original Message-
From: Dan Davison [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 12, 2008 5:54 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Between the values
On Tue, Aug 12, 2008 at 05:16:01PM +0530, Shubha Vishwanath Karanth
wrote:
Hi R,
This is a very trivial one
C=0.1
I want to check whether my value of C is between 0 and 1
exclusively
I don't want to use (C0 C1). And I can't use a single statement
like
(0C1). Is there a between function? Or how do we specify from 0 to
1?
Does %in% help me?
If you don't like (C 0 C 1), then just write your own function
is.between(x, low, high) (NB1 you've basically written it already; NB2
single '' for the vectorised version 'are.between'). People's personal
tastes about what's desirable will vary, and anyway it's good practice to
build up your own personal library of functions. Ultimately if you have a
high quality collection of related functions for working on a particular
sort of problem, then you should publish them as an R package on CRAN.
Dan
Many Thanks,
Shubha
This e-mail may contain confidential and/or privileged
i...{{dropped:13}}
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
www.stats.ox.ac.uk/~davison
This e-mail may contain confidential and/or privileged i...{{dropped:10}}
__
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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This e-mail may contain confidential and/or privileged i...{{dropped:10}}
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PLEASE do read the posting
Re: [R] Between the values
Not to define a vector of all infinite values... But if I have some object (may
not be a vector) which has this interval, then I can apply whatever function I
need to on this interval apart from 'between' function... Is there something
like that... Hope I am clear with the idea...
Thanks, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dan Davison
Sent: Tuesday, August 12, 2008 7:21 PM
To: r-help@r-project.org
Subject: Re: [R] Between the values
Shubha Vishwanath Karanth wrote:
Or at least anyways of defining a vector/(or something like that) which
has all values between 0 and 1?
For example:
C(0,1) is incorrect, seq(0,1,0.2) is also incorrect, seq(0,1,0.1) is
also incorrect How does one specify this?
Hi Shubha,
What are you trying to do? The set of all real numbers between 0 and 1 is
infinitely large. Obviously you can't explicitly construct an infinitely
large vector in R. If you want to construct an implicit specification of
that set, then I think I've already given you a good answer in R: define a
predicate function and use it. E.g.
between - function(x, low, high) x low x high
I don't know much at all about symbolic mathematics packages like Maple and
Mathematica, but maybe you're thinking of something you can do in those
softwares? R is not trying to be a competitor to them; they do lots of
things R doesn't, and vice versa.
Dan
Shubha Vishwanath Karanth wrote:
Thanks, Shubha
-Original Message-
From: Dan Davison [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 12, 2008 5:54 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Between the values
On Tue, Aug 12, 2008 at 05:16:01PM +0530, Shubha Vishwanath Karanth
wrote:
Hi R,
This is a very trivial one
C=0.1
I want to check whether my value of C is between 0 and 1
exclusively
I don't want to use (C0 C1). And I can't use a single statement
like
(0C1). Is there a between function? Or how do we specify from 0 to
1?
Does %in% help me?
If you don't like (C 0 C 1), then just write your own function
is.between(x, low, high) (NB1 you've basically written it already; NB2
single '' for the vectorised version 'are.between'). People's
personal tastes about what's desirable will vary, and anyway it's good
practice to build up your own personal library of
functions. Ultimately if you have a high quality collection of related
functions for working on a particular sort of problem, then you should
publish them as an R package on CRAN.
Dan
Many Thanks,
Shubha
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[R] Downloading Yahoo data
Hi R,
I am trying to download the data from R. I give the below command.
library(fImport)
yahooSeries(IBM)
trying URL
'http://chart.yahoo.com/table.csv?s=IBMa=7b=08c=2007d=7e=07f=2008;
g=dx=.csv'
Error in download.file(url = url, destfile = file, method = method) :
cannot open URL
'http://chart.yahoo.com/table.csv?s=IBMa=7b=08c=2007d=7e=07f=2008;
g=dx=.csv'
In addition: Warning message:
In download.file(url = url, destfile = file, method = method) :
unable to connect to 'chart.yahoo.com' on port 80.
Error: cannot get a slot (data) from an object of type character
In addition: Warning message:
trying to get slot data from an object of a basic class (character)
with no slots
The problem is related with connection of R with the internet. But my
port 80 is opened. Then also the error persists.
And also, the link is accessible in my PC via the direct internet. How
do I make this work?
Many Thanks,
Shubha
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Re: [R] Downloading Yahoo data
Yes Henrique... we are connecting to the internet through a proxy...
Thanks, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Henrique Dallazuanna [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 07, 2008 8:17 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Downloading Yahoo data
You are connecting to the internet trougth a proxy?
On Thu, Aug 7, 2008 at 9:40 AM, Shubha Vishwanath Karanth
[EMAIL PROTECTED] wrote:
Hi R,
I am trying to download the data from R. I give the below command.
library(fImport)
yahooSeries(IBM)
trying URL
'http://chart.yahoo.com/table.csv?s=IBMa=7b=08c=2007d=7e=07f=2008;
g=dx=.csv'
Error in download.file(url = url, destfile = file, method = method) :
cannot open URL
'http://chart.yahoo.com/table.csv?s=IBMa=7b=08c=2007d=7e=07f=2008;
g=dx=.csv'
In addition: Warning message:
In download.file(url = url, destfile = file, method = method) :
unable to connect to 'chart.yahoo.com' on port 80.
Error: cannot get a slot (data) from an object of type character
In addition: Warning message:
trying to get slot data from an object of a basic class (character)
with no slots
The problem is related with connection of R with the internet. But my
port 80 is opened. Then also the error persists.
And also, the link is accessible in my PC via the direct internet. How
do I make this work?
Many Thanks,
Shubha
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--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40 S 49° 16' 22 O
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[R] dens function
Hi R,
Is there a function called dens in R? Is it similar to density? I
found this function in an RExcel demo... Or is it in a specific other
package? The function is used as (=rapply(dens,A11:A1010,100,D8,-5,5))
Thanks,
Shubha
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[R] Simple... but...
Hi R,
If
x=c(1,3,5)
y=c(2,4,6)
I need a vector which is c(1,2,3,4,5,6) from x and y.
How do I do it? I mean the best way
Thanks, Shubha
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Re: [R] Simple... but...
Guess this should be fine
c(rbind(x,y))
Please let me know if there are some better ways...
Thanks, Shubha
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Shubha Vishwanath Karanth
Sent: Wednesday, July 23, 2008 6:25 PM
To: [EMAIL PROTECTED]
Subject: [R] Simple... but...
Hi R,
If
x=c(1,3,5)
y=c(2,4,6)
I need a vector which is c(1,2,3,4,5,6) from x and y.
How do I do it? I mean the best way
Thanks, Shubha
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i...{{dropped:13}}
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Re: [R] Simple... but...
OK,
Let x=c(4,2,2)
y=c(1,5,3)
My result should be c(4,1,2,5,2,3)
Thanks, Shubha
-Original Message-
From: Doran, Harold [mailto:[EMAIL PROTECTED]
Sent: Wednesday, July 23, 2008 6:47 PM
To: Shubha Vishwanath Karanth; [EMAIL PROTECTED]
Subject: RE: [R] Simple... but...
x - c(1,3,5)
y - c(2,4,6)
sort(c(x,y))
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Shubha
Vishwanath Karanth
Sent: Wednesday, July 23, 2008 8:55 AM
To: [EMAIL PROTECTED]
Subject: [R] Simple... but...
Hi R,
If
x=c(1,3,5)
y=c(2,4,6)
I need a vector which is c(1,2,3,4,5,6) from x and y.
How do I do it? I mean the best way
Thanks, Shubha
This e-mail may contain confidential and/or privileged
i...{{dropped:13}}
__
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http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
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Re: [R] sequential sum of a vector...
Many Thanks Jorge... That was one more way...Is it possible if I can do
this without using rep(1:10,each=8) or the groupingbecause I feel
the number 8 here is fixed... If there is some technique of tracking the
position of first 8, then next 8... don't know whether I am clear in
conveying...
Thanks, shubha
From: Jorge Ivan Velez [mailto:[EMAIL PROTECTED]
Sent: Wednesday, July 23, 2008 8:59 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] sequential sum of a vector...
Dear Shubha,
Try this:
x=1:80
tapply(x,rep(1:10,each=8),sum)
1 2 3 4 5 6 7 8 9 10
36 100 164 228 292 356 420 484 548 612
HTH,
Jorge
On Wed, Jul 23, 2008 at 10:03 AM, Shubha Vishwanath Karanth
[EMAIL PROTECTED] wrote:
Hi R,
Let,
x=1:80
I want to sum up first 8 elements of x, then again next 8 elements of x,
then again another 8 elements. So, my new vector should look like:
c(36,100,164,228,292,356,420,484,548,612)
I used:
aggregate(x,list(rep(1:10,each=8)),sum)[-1]
or
rowsum(x,group=rep(1:10,each=8))
But without grouping, can I achieve the required? Any other ways of
doing this?
Thanks, Shubha
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[R] A neural network problem---neuralnet package
Hi R,
Here's a question/problem on the 'neuralnet' package for neural
networks. I have more than 50 factors in each of my independent
variables. When I apply the command 'neuralnet', I get the below warning
message,
net.sum - neuralnet( Sum~Var1+Var2+Var3, b,
hidden=0,linear.output=TRUE)
Warning message:
'predictions' will not be calculated, as at least one covariate contains
more than 50 different values
net.sum$predictions
NULL
Understand that the documentation of 'neuralnet' also says this. But I
need to get the predictions. How do I achieve this?
Thanks,
Shubha
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[R] Sum(Random Numbers)=100
Hi R,
I need to generate 50 random numbers (preferably poisson), such that
their sum is equal to 100. How do I do this?
Thank you,
Shubha
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Re: [R] Sum(Random Numbers)=100
...actually I need to allocate certain amount of money (here I mentioned
it as 100) to a randomly selected stocks(50 stocks)... i.e., 100 being
divided among 50 stocks and preferably all are integer allocations(i.e.,
5 8 56 12 etc without any decimals)...
Thank you,
Shubha
-Original Message-
From: Moshe Olshansky [mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 08, 2008 12:09 PM
To: [EMAIL PROTECTED]; Shubha Vishwanath Karanth
Subject: Re: [R] Sum(Random Numbers)=100
If they are really random you can not expect their sum to be 100.
However, it is not difficult to get that given that the sum of n
independent Poisson random variables equals N, any individual one has
the conditional binomial distribution with size = N and p = 1/n, i.e.
P(Xi=k/Sn=N) = (N over k)*(1/n)^k*((n-1)/n)^(N-k).
So you can generate X1 binomial with size = 100 and p = 1/50; if X1 = k1
then the sum of the rest 49 must equal 100 - k1, so now you generate X2
binomial with size = 100-k1 and p = 1/49; if X2 = k2 then generate X3
binomial with size = 100 -(k1+k2) and p = 1/48, etc.
Why do you need this?
--- On Tue, 8/7/08, Shubha Vishwanath Karanth [EMAIL PROTECTED]
wrote:
From: Shubha Vishwanath Karanth [EMAIL PROTECTED]
Subject: [R] Sum(Random Numbers)=100
To: [EMAIL PROTECTED]
Received: Tuesday, 8 July, 2008, 3:58 PM
Hi R,
I need to generate 50 random numbers (preferably poisson),
such that
their sum is equal to 100. How do I do this?
Thank you,
Shubha
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reproducible code.
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[R] Calling R functions into C# or C++
Hi R,
I have a request...
Can I call R functions/routines from C# or C++? If so, how do I do this? Do I
need to have some knowledge on DLL to do this?
Thanks a lot for your help,
Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
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[R] Comparison between R and MATLAB
Hi R,
Can I get a comparison between R and MATLAB? How is R efficient than MATLAB? Or
what are the weaknesses of R compared to MATLAB?
Thank you very much for your help,
Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
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[R] The log function problem
Hi R,
Please see the below commands. The question is I can see the value of
log(2) before loading the package fcalendar in R. But after loading the
package, the 'log' function doesn't work. How to solve this problem?
Also note that the function code differs before and after downloading
the packages.
log
function (x, base = exp(1)) .Primitive(log)
log(2)
[1] 0.6931472
library(fCalendar)
Loading required package: fEcofin
Rmetrics, (C) 1999-2006, Diethelm Wuertz, GPL
fCalendar: Time, Date and Calendar Tools
library(fCalendar)
log
function (x, base = exp(1))
{
UseMethod(log)
}
log(2)
Error in .Internal(log(x)) : no internal function log
Many Thanks for your help,
Shubha
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[R] Polynomial Goal Programming
Hello R,
Is there a package to perform Polynomial goal programming in R?
BR, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
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[R] Overlaying the matrices
Hi R,
I have a matrix,
x1=matrix(NA,6,6,dimnames=list(letters[1:6],LETTERS[1:6]))
x1
A B C D E F
a NA NA NA NA NA NA
b NA NA NA NA NA NA
c NA NA NA NA NA NA
d NA NA NA NA NA NA
e NA NA NA NA NA NA
f NA NA NA NA NA NA
x2=matrix(rpois(9,1),3,3,dimnames=list(c(b,a,f),c(D,E,F)))
x2
D E F
b 0 3 0
a 2 2 1
f 1 0 0
I need to put the values of x2 in the corresponding elements of x1. So
then, x1 would look like:
A B C D E F
a NA NA NA 2 2 1
b NA NA NA 0 3 0
c NA NA NA NA NA NA
d NA NA NA NA NA NA
e NA NA NA NA NA NA
f NA NA NA 1 0 0
What would be the best way to do this?
Many Thanks,
Shubha
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[R] sum of unknown number of matrices
Hi R,
I have a list of matrices. I need to get the sum of all the matrices in
the list.
Example:
a=b=c=d=matrix(1:4,2,2)
l=list(a,b,c,d)
I need:
a+b+c+d
[,1] [,2]
[1,]4 12
[2,]8 16
Something like do.call(+,l) is not working...why is this?
I may not be knowing the number of matrices in the list...
Thanks, Shubha
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Re: [R] sum of unknown number of matrices
Thanks all...Reduce() is the new function I learnt today... Thanks...
BR, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Barry Rowlingson [mailto:[EMAIL PROTECTED]
Sent: Wednesday, June 04, 2008 8:49 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] sum of unknown number of matrices
Shubha Vishwanath Karanth wrote:
I need:
a+b+c+d
[,1] [,2]
[1,]4 12
[2,]8 16
Something like do.call(+,l) is not working...why is this?
Because do.call constructs a function call with the elements of l as
arguments, so you end up with:
+(1:4, 1:4, 1:4, 1:4)
but + only takes two arguments.
Use 'Reduce':
Reduce(+,l)
[,1] [,2]
[1,]4 12
[2,]8 16
Barry
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[R] Solving 100th order equation
Hi R,
I have a 100th order equation for which I need to solve the value for x. Is
there a package to do this?
For example my equation is:
(x^100 )- (2*x^99) +(10*x^50)+.. +(6*x ) = 4000
I have only one unknown value and that is x. How do I solve for this?
BR, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
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Re: [R] Solving 100th order equation
To apply uniroot I don't even know the interval values... Does numerical
methods help me? Or any other method?
Thanks and Regards,
Shubha
-Original Message-
From: Duncan Murdoch [mailto:[EMAIL PROTECTED]
Sent: Saturday, May 24, 2008 5:08 PM
To: Shubha Vishwanath Karanth
Subject: Re: [R] Solving 100th order equation
Shubha Vishwanath Karanth wrote:
Hi R,
I have a 100th order equation for which I need to solve the value for x. Is
there a package to do this?
For example my equation is:
(x^100 )- (2*x^99) +(10*x^50)+.. +(6*x ) = 4000
I have only one unknown value and that is x. How do I solve for this?
uniroot() will find one root. If you want all of them, I don't know
what is available.
Duncan Murdoch
BR, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
This e-mail may contain confidential and/or privileged i...{{dropped:13}}
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Re: [R] Solving 100th order equation
Was also wondering which theoretical method is used to solve this problem?
Thanks,
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Gabor Grothendieck [mailto:[EMAIL PROTECTED]
Sent: Saturday, May 24, 2008 6:13 PM
To: Peter Dalgaard
Cc: Shubha Vishwanath Karanth; [EMAIL PROTECTED]; Duncan Murdoch
Subject: Re: [R] Solving 100th order equation
On Sat, May 24, 2008 at 8:31 AM, Peter Dalgaard
[EMAIL PROTECTED] wrote:
Shubha Vishwanath Karanth wrote:
To apply uniroot I don't even know the interval values... Does numerical
methods help me? Or any other method?
Thanks and Regards,
Shubha
-Original Message-
From: Duncan Murdoch [mailto:[EMAIL PROTECTED] Sent: Saturday, May 24,
2008 5:08 PM
To: Shubha Vishwanath Karanth
Subject: Re: [R] Solving 100th order equation
Shubha Vishwanath Karanth wrote:
Hi R,
I have a 100th order equation for which I need to solve the value for x.
Is there a package to do this?
For example my equation is:
(x^100 )- (2*x^99) +(10*x^50)+.. +(6*x ) = 4000
I have only one unknown value and that is x. How do I solve for this?
uniroot() will find one root. If you want all of them, I don't know what
is available.
Duncan Murdoch
polyroot() is built for this, but it stops at 48th degree polynomials, at
least as currently implemented. Not sure that it (or anything else) would be
stable beyond that limit. YACAS perhaps?
Unfortunately yacas does not seem to be able to handle it:
library(Ryacas)
x - Sym(x)
Solve((x^100 )- (2*x^99) +(10*x^50)+(6*x ) - 4000 == 0, x)
[1] Starting Yacas!
expression(list())
Simpler one works ok:
Solve(x^2 - 1, x)
expression(list(x == 1, x == -1))
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Re: [R] Pros and Cons of R
Completely agreed!
BR, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ruben Roa Ureta
Sent: Thursday, May 22, 2008 10:53 PM
To: Monica Pisica
Cc: r-help@r-project.org
Subject: Re: [R] Pros and Cons of R
Hi,
I am doing a very informal presentation for my office about R capabilities
to deal with and analyze spatial data, display data and maps, and
connections with GIS. I've used in my presentation info from the CRAN, the
spatial Task view, and the more striking graphics examples from
http://addictedtor.free.fr/graphiques/thumbs.php and NCEAS
http://www.nceas.ucsb.edu/scicomp/GISSeminar/UseCases/MapProdWithRGraphics/OneMapProdWithRGraphics.html
together with examples of my own work.
I am finishing with pros and cons about R and I am wondering if you can
come up with other examples, or comments. Here they are:
Pros:
- R is a programming environment well suited for statistical analysis.
- R is open source and cross platforms (Windows, Mac, Linux).
- Fortran, C (C++), and Python wrappers are in place.
- Deals well with spatial data, has a robust graphical interface and has
an active user group list / forum.
- External packages for R are almost daily increasing, most of them based
on published up-to-date books and peer-reviewed articles.
- R related books - quite a few
I think you should considering adding the quality of support, as
represented by this list and the archives (easily accesible with
RSiteSearch). Not many softwares have their creators and best minds
answering the cries for help from the most humble users (though these
creators and best minds can be rough at times, probably with good
reasons).
Rubén
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[R] apply function
Hi R,
Getting a strange result using ?apply. Please look into the below codes:
d=data.frame(a=c(1,2,3),b=c(A,B,C),c=c(TRUE,FALSE,FALSE),d=c(T,F,F
))
class(d[,1])
[1] numeric
class(d[,2])
[1] factor
class(d[,3])
[1] logical
class(d[,4])
[1] logical
apply(d,2,class)
a b c d
character character character character
apply(d[,c(1,3)],2,class)
a c
numeric numeric
apply(d[,c(3,4)],2,class)
c d
logical logical
apply(d[,c(3,2)],2,class)
c b
character character
Why is this so? How do I get the actual classes of columns of my
dataframe d?
Thanks,
Shubha
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[R] Reading SAS data into R
Hi R,
Suppose that SAS dataset 'tsubset1' is stored in the path, Z:/data.
Then I give the below read.ssd() command to read SAS dataset,
'tsubset1.sas7bat' into R.
library(foreign)
s=read.ssd(Z:/data,tsubset1,sascmd = C:/Program Files/SAS/SAS
9.1/sas.exe)
s
A B C
1 3 4 5
2 6 7 8
3 3 4 5
It reads perfect! It reads well for tsubset1,tsubset2,.,
tsubset9 datasets. But then onwards it gives an error as below:
* s=read.ssd(Z:/data,tsubset10,sascmd = C:/Program
Files/SAS/SAS 9.1/sas.exe)
SAS failed. SAS program at
C:\DOCUME~1\SHUBHA~1.AMB\LOCALS~1\Temp\1\RtmpObHuqk\file6df11649.sas
The log file will be file6df11649.log in the current directory
Warning message:
In read.ssd(Z:/data, tsubset1011, sascmd = C:/Program Files/SAS/SAS
9.1/sas.exe) :
SAS return code was 2
Why is this? Are two numerical digits in a filename of a SAS dataset
cannot be read by R? The error prevails for tsubset201, tsubset35462
etc Can somebody point out to me where actually the error is?
Many Thanks,
Shubha
This e-mail may contain confidential and/or privileged i...{{dropped:13}}
__
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Reading SAS data into R
Seems that it gets deleted But lemme try again by providing the arguments...
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Peter Dalgaard [mailto:[EMAIL PROTECTED]
Sent: Thursday, May 15, 2008 6:30 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Reading SAS data into R
Shubha Vishwanath Karanth wrote:
Hi R,
Suppose that SAS dataset 'tsubset1' is stored in the path, Z:/data.
Then I give the below read.ssd() command to read SAS dataset,
'tsubset1.sas7bat' into R.
library(foreign)
s=read.ssd(Z:/data,tsubset1,sascmd = C:/Program Files/SAS/SAS
9.1/sas.exe)
s
A B C
1 3 4 5
2 6 7 8
3 3 4 5
It reads perfect! It reads well for tsubset1,tsubset2,.,
tsubset9 datasets. But then onwards it gives an error as below:
* s=read.ssd(Z:/data,tsubset10,sascmd = C:/Program
Files/SAS/SAS 9.1/sas.exe)
SAS failed. SAS program at
C:\DOCUME~1\SHUBHA~1.AMB\LOCALS~1\Temp\1\RtmpObHuqk\file6df11649.sas
The log file will be file6df11649.log in the current directory
Warning message:
In read.ssd(Z:/data, tsubset1011, sascmd = C:/Program Files/SAS/SAS
9.1/sas.exe) :
SAS return code was 2
Why is this? Are two numerical digits in a filename of a SAS dataset
cannot be read by R? The error prevails for tsubset201, tsubset35462
etc Can somebody point out to me where actually the error is?
What is in the SAS log file?
--
O__ Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907
This e-mail may contain confidential and/or privileged i...{{dropped:10}}
__
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Reading SAS data into R
Hi Peter,
Realized that the log files are generated only when there is an error. Here are
my contents of the log file:
libname src2rd 'Z:/data';
libname rd xport
'C:\DOCUME~1\SHUBHA~1.AMB\LOCALS~1\Temp\1\RtmpObHuqk\file323b4e45';
proc copy in=src2rd out=rd;
select tsubset10 ;
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Shubha
Vishwanath Karanth
Sent: Thursday, May 15, 2008 6:35 PM
To: Peter Dalgaard
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Reading SAS data into R
Seems that it gets deleted But lemme try again by providing the arguments...
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Peter Dalgaard [mailto:[EMAIL PROTECTED]
Sent: Thursday, May 15, 2008 6:30 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Reading SAS data into R
Shubha Vishwanath Karanth wrote:
Hi R,
Suppose that SAS dataset 'tsubset1' is stored in the path, Z:/data.
Then I give the below read.ssd() command to read SAS dataset,
'tsubset1.sas7bat' into R.
library(foreign)
s=read.ssd(Z:/data,tsubset1,sascmd = C:/Program Files/SAS/SAS
9.1/sas.exe)
s
A B C
1 3 4 5
2 6 7 8
3 3 4 5
It reads perfect! It reads well for tsubset1,tsubset2,.,
tsubset9 datasets. But then onwards it gives an error as below:
* s=read.ssd(Z:/data,tsubset10,sascmd = C:/Program
Files/SAS/SAS 9.1/sas.exe)
SAS failed. SAS program at
C:\DOCUME~1\SHUBHA~1.AMB\LOCALS~1\Temp\1\RtmpObHuqk\file6df11649.sas
The log file will be file6df11649.log in the current directory
Warning message:
In read.ssd(Z:/data, tsubset1011, sascmd = C:/Program Files/SAS/SAS
9.1/sas.exe) :
SAS return code was 2
Why is this? Are two numerical digits in a filename of a SAS dataset
cannot be read by R? The error prevails for tsubset201, tsubset35462
etc Can somebody point out to me where actually the error is?
What is in the SAS log file?
--
O__ Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907
This e-mail may contain confidential and/or privileged i...{{dropped:10}}
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
This e-mail may contain confidential and/or privileged i...{{dropped:10}}
__
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Reading SAS data into R
After running the codes in the log file, I realized that this has something to
do with SAS only...
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Shubha Vishwanath Karanth
Sent: Thursday, May 15, 2008 7:03 PM
To: Peter Dalgaard
Cc: [EMAIL PROTECTED]
Subject: RE: [R] Reading SAS data into R
Hi Peter,
Realized that the log files are generated only when there is an error. Here are
my contents of the log file:
libname src2rd 'Z:/data';
libname rd xport
'C:\DOCUME~1\SHUBHA~1.AMB\LOCALS~1\Temp\1\RtmpObHuqk\file323b4e45';
proc copy in=src2rd out=rd;
select tsubset10 ;
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Shubha
Vishwanath Karanth
Sent: Thursday, May 15, 2008 6:35 PM
To: Peter Dalgaard
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Reading SAS data into R
Seems that it gets deleted But lemme try again by providing the arguments...
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Peter Dalgaard [mailto:[EMAIL PROTECTED]
Sent: Thursday, May 15, 2008 6:30 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Reading SAS data into R
Shubha Vishwanath Karanth wrote:
Hi R,
Suppose that SAS dataset 'tsubset1' is stored in the path, Z:/data.
Then I give the below read.ssd() command to read SAS dataset,
'tsubset1.sas7bat' into R.
library(foreign)
s=read.ssd(Z:/data,tsubset1,sascmd = C:/Program Files/SAS/SAS
9.1/sas.exe)
s
A B C
1 3 4 5
2 6 7 8
3 3 4 5
It reads perfect! It reads well for tsubset1,tsubset2,.,
tsubset9 datasets. But then onwards it gives an error as below:
* s=read.ssd(Z:/data,tsubset10,sascmd = C:/Program
Files/SAS/SAS 9.1/sas.exe)
SAS failed. SAS program at
C:\DOCUME~1\SHUBHA~1.AMB\LOCALS~1\Temp\1\RtmpObHuqk\file6df11649.sas
The log file will be file6df11649.log in the current directory
Warning message:
In read.ssd(Z:/data, tsubset1011, sascmd = C:/Program Files/SAS/SAS
9.1/sas.exe) :
SAS return code was 2
Why is this? Are two numerical digits in a filename of a SAS dataset
cannot be read by R? The error prevails for tsubset201, tsubset35462
etc Can somebody point out to me where actually the error is?
What is in the SAS log file?
--
O__ Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907
This e-mail may contain confidential and/or privileged i...{{dropped:10}}
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
This e-mail may contain confidential and/or privileged i...{{dropped:10}}
__
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Reading SAS data into R
Oh!...Got that...A member in the RD library of SAS can contain only 8
characters in its filename. Since the variables 'tsubset1',
'tsubset2','tsubset9' had exactly 8 letters in the name, those files read
properly and then onwards, since the number of letters/characters exceeded
8, those were not read!
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Shubha
Vishwanath Karanth
Sent: Thursday, May 15, 2008 6:35 PM
To: Peter Dalgaard
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Reading SAS data into R
Seems that it gets deleted But lemme try again by providing the arguments...
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Peter Dalgaard [mailto:[EMAIL PROTECTED]
Sent: Thursday, May 15, 2008 6:30 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Reading SAS data into R
Shubha Vishwanath Karanth wrote:
Hi R,
Suppose that SAS dataset 'tsubset1' is stored in the path, Z:/data.
Then I give the below read.ssd() command to read SAS dataset,
'tsubset1.sas7bat' into R.
library(foreign)
s=read.ssd(Z:/data,tsubset1,sascmd = C:/Program Files/SAS/SAS
9.1/sas.exe)
s
A B C
1 3 4 5
2 6 7 8
3 3 4 5
It reads perfect! It reads well for tsubset1,tsubset2,.,
tsubset9 datasets. But then onwards it gives an error as below:
* s=read.ssd(Z:/data,tsubset10,sascmd = C:/Program
Files/SAS/SAS 9.1/sas.exe)
SAS failed. SAS program at
C:\DOCUME~1\SHUBHA~1.AMB\LOCALS~1\Temp\1\RtmpObHuqk\file6df11649.sas
The log file will be file6df11649.log in the current directory
Warning message:
In read.ssd(Z:/data, tsubset1011, sascmd = C:/Program Files/SAS/SAS
9.1/sas.exe) :
SAS return code was 2
Why is this? Are two numerical digits in a filename of a SAS dataset
cannot be read by R? The error prevails for tsubset201, tsubset35462
etc Can somebody point out to me where actually the error is?
What is in the SAS log file?
--
O__ Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907
This e-mail may contain confidential and/or privileged i...{{dropped:10}}
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
This e-mail may contain confidential and/or privileged i...{{dropped:10}}
__
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Reading SAS data into R
By RD library I mean the xport library...
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Shubha Vishwanath Karanth
Sent: Thursday, May 15, 2008 7:21 PM
To: [EMAIL PROTECTED]
Cc: Peter Dalgaard
Subject: RE: [R] Reading SAS data into R
Oh!...Got that...A member in the RD library of SAS can contain only 8
characters in its filename. Since the variables 'tsubset1',
'tsubset2','tsubset9' had exactly 8 letters in the name, those files read
properly and then onwards, since the number of letters/characters exceeded
8, those were not read!
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Shubha
Vishwanath Karanth
Sent: Thursday, May 15, 2008 6:35 PM
To: Peter Dalgaard
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Reading SAS data into R
Seems that it gets deleted But lemme try again by providing the arguments...
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Peter Dalgaard [mailto:[EMAIL PROTECTED]
Sent: Thursday, May 15, 2008 6:30 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Reading SAS data into R
Shubha Vishwanath Karanth wrote:
Hi R,
Suppose that SAS dataset 'tsubset1' is stored in the path, Z:/data.
Then I give the below read.ssd() command to read SAS dataset,
'tsubset1.sas7bat' into R.
library(foreign)
s=read.ssd(Z:/data,tsubset1,sascmd = C:/Program Files/SAS/SAS
9.1/sas.exe)
s
A B C
1 3 4 5
2 6 7 8
3 3 4 5
It reads perfect! It reads well for tsubset1,tsubset2,.,
tsubset9 datasets. But then onwards it gives an error as below:
* s=read.ssd(Z:/data,tsubset10,sascmd = C:/Program
Files/SAS/SAS 9.1/sas.exe)
SAS failed. SAS program at
C:\DOCUME~1\SHUBHA~1.AMB\LOCALS~1\Temp\1\RtmpObHuqk\file6df11649.sas
The log file will be file6df11649.log in the current directory
Warning message:
In read.ssd(Z:/data, tsubset1011, sascmd = C:/Program Files/SAS/SAS
9.1/sas.exe) :
SAS return code was 2
Why is this? Are two numerical digits in a filename of a SAS dataset
cannot be read by R? The error prevails for tsubset201, tsubset35462
etc Can somebody point out to me where actually the error is?
What is in the SAS log file?
--
O__ Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907
This e-mail may contain confidential and/or privileged i...{{dropped:10}}
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
This e-mail may contain confidential and/or privileged i...{{dropped:10}}
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[R] dataframes to a list
Hi R,
I have the data frames, data1, data2data50. Now I want to put all of
these in a single list. But,
list(data1, data2,.data50) is very big to write. How do I then
do it?
Thanks,
Shubha
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Re: [R] dataframes to a list
How do I proceed from this stage?
paste(data,1:10,sep=,collapse=,)
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Shubha
Vishwanath Karanth
Sent: Wednesday, May 14, 2008 3:59 PM
To: [EMAIL PROTECTED]
Subject: [R] dataframes to a list
Hi R,
I have the data frames, data1, data2data50. Now I want to put all of
these in a single list. But,
list(data1, data2,.data50) is very big to write. How do I then
do it?
Thanks,
Shubha
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[R] A very simple question
Hi R,
Suppose
l=c(1,1,1,2,2,1,1,1)
k[-which(k==1)]
[1] 2 2
k[-which(k==2)]
[1] 1 1 1 1 1 1
But,
k[-which(k==3)]
numeric(0)
I do not want this numeric(0), instead the whole k itself should be my
result... How do I do this?
Thanks,
Shubha
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[R] Regular Expressions
Hi R,
Again struck with regular expressions...
Suppose,
S=c(World_is_beautiful, one_two_three_four,My_book)
I need to extract the last but one element of the strings. So, my output should
look like:
Ans=c(is,three,My)
gsub() can do this...but wondering how do I give the regular expression
Shubha Karanth | Amba Research
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[R] Remove an object by the reference
Hi R,
A simple question, but don't know the answer...
x=a
a=5
I need to remove the object a by using only x. something like
rm(somefunction(x))...Is this possible?
Shubha Karanth | Amba Research
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[R] Quadratic Constraints
Hi R,
A quick question How can I optimize the objective function
constrained to quadratic constraints? Which function of R is useful for
quadratic constraints?
Many Thanks,
Shubha
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Re: [R] Quadratic Constraints
Hello R,
By any chance, Rdonlp2 package of R defined in
http://arumat.net/Rdonlp2/tutorial.html#SECTION0002
serves the below purpose?
BR, Shubha
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Shubha Vishwanath Karanth
Sent: Monday, May 12, 2008 3:27 PM
To: [EMAIL PROTECTED]
Subject: [R] Quadratic Constraints
Hi R,
A quick question How can I optimize the objective function
constrained to quadratic constraints? Which function of R is useful for
quadratic constraints?
Many Thanks,
Shubha
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i...{{dropped:13}}
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[R] orders of the arima model
Hi R,
Was just checking the ?ar , the autoregressive model. It's great that
R can give the order of the autoregressive model. Suppose if I had 2000
observations to fit an AR model. Then, if I am correct R builds 33+1
autoregressive models (10*log10(2000)=33) and select the order at which
the aic's of the models were the least.
My question is whether the procedure ?arima can throw the orders (p
and q) of the arima model?
Many Thanks,
Shubha
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Re: [R] Re turning variable names with variables (in a function)
You can just go for a small change in the function as,
results - cbind(se, upper, lower, cv)
OR
results - data.frame(se, upper, lower, cv)
-S-
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Stropharia
Sent: Thursday, May 08, 2008 5:51 PM
To: r-help@r-project.org
Subject: [R] Re turning variable names with variables (in a function)
Dear R Users,
I have written a function that returns 4 variables. I would like to have
the
variables returned with their variable names, is this possible?
- R Code -
mc.error - function(T, p=0.05){
se - sqrt((p)*(1-(p))/T) # standard error
upper - p+(1.96*se) # upper CI
lower - p-(1.96*se) # lower CI
cv - se/p # coefficient of variation
results - c(se, upper, lower, cv)
return(results)
}
- R Code -
This returns (or something like this, depending on the value of T):
[1] 0.004998685 0.059797422 0.040202578 0.099973695
I would like:
[1] se=0.004998685 upper=0.059797422 lower=0.040202578 cv=0.099973695
Or even better:
se upper lowercv
0.004998685 0.059797422 0.040202578 0.099973695
Any help is much appreciated, thanks.
Steve
~~
Steven Worthington
Ph.D. Candidate
New York Consortium in
Evolutionary Primatology
Department of Anthropology
New York University
25 Waverly Place
New York, NY 10003
U.S.A.
~~
--
View this message in context:
http://www.nabble.com/Returning-variable-names-with-variables-%28in-a-fu
nction%29-tp17124874p17124874.html
Sent from the R help mailing list archive at Nabble.com.
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[R] single plot statement, multiple plots
Hi R,
par(mfrow=c(2,2))
x1=(1:5)^1; x2=(1:5)^2; x3=(1:5)^3; x4=(1:5)^4
I need to write a single plot statement, which creates 4 plots (for x1,
x2, x3 and x4) in the graphics window, without using 'for' loop. Is this
possible? Does 'do.call' help in this context? Or do I have any option
in the 'plot' statement itself to do this?
Thanks in advance,
Shubha
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Re: [R] single plot statement, multiple plots
Thank you very much Gabor...Zoo is very powerful...
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Gabor Grothendieck [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 06, 2008 7:40 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] single plot statement, multiple plots
Try plot.zoo in which case you don't need the par:
library(zoo)
plot(zoo(cbind(x1, x2, x3, x4)), nc = 2)
or
plot(zoo(outer(1:5, 1:4, ^)), nc = 2)
See ?plot.zoo, ?xyplot.zoo and the three vignettes in
the zoo package.
On Tue, May 6, 2008 at 9:47 AM, Shubha Vishwanath Karanth
[EMAIL PROTECTED] wrote:
Hi R,
par(mfrow=c(2,2))
x1=(1:5)^1; x2=(1:5)^2; x3=(1:5)^3; x4=(1:5)^4
I need to write a single plot statement, which creates 4 plots (for x1,
x2, x3 and x4) in the graphics window, without using 'for' loop. Is this
possible? Does 'do.call' help in this context? Or do I have any option
in the 'plot' statement itself to do this?
Thanks in advance,
Shubha
This e-mail may contain confidential and/or privileged i...{{dropped:13}}
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Re: [R] single plot statement, multiple plots
Wonderful...This works...
lapply(list(x1,x2,x3,x4),plot,type=l)
Thanks a lot!
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of David Winsemius
Sent: Tuesday, May 06, 2008 7:55 PM
To: [EMAIL PROTECTED]
Subject: Re: [R] single plot statement, multiple plots
Shubha Vishwanath Karanth [EMAIL PROTECTED] wrote in
news:[EMAIL PROTECTED]:
Hi R,
par(mfrow=c(2,2))
x1=(1:5)^1; x2=(1:5)^2; x3=(1:5)^3; x4=(1:5)^4
I need to write a single plot statement, which creates 4 plots (for
x1, x2, x3 and x4) in the graphics window, without using 'for' loop.
Is this possible? Does 'do.call' help in this context? Or do I have
any option in the 'plot' statement itself to do this?
Have you considered lapply()?
--
David Winsemius
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[R] To preserve the class Matrix
Hi,
Suppose
a=matrix(1:9,3,3)
a
[,1] [,2] [,3]
[1,]147
[2,]258
[3,]369
Now,
class(a[1:2,])
[1] matrix
class(a[1:3,])
[1] matrix
class(a[,1:2])
[1] matrix
class(a[,1:3])
[1] matrix
But,
class(a[1,])
[1] integer
class(a[,1])
[1] integer
Can in a general way get class(a[1,]) or class(a[,1]) to be matrix only?
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
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Re: [R] To preserve the class Matrix
Thank you very much Mark! That worked Just a question, ?[ does give an
error to me...how do I find it?
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
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-Original Message-
From: Shubha Vishwanath Karanth
Sent: Tuesday, May 06, 2008 8:50 PM
To: 'Mark Leeds'
Subject: RE: [R] To preserve the class Matrix
Thank you very much Mark! That worked Just a question, ?[ does give an
error to me...how do I find it?
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Mark Leeds [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 06, 2008 8:46 PM
To: Shubha Vishwanath Karanth
Subject: RE: [R] To preserve the class Matrix
Hui Shubha: If I understand what you're asking, you want to use drop=FALSE
as in a[1,,drop=FALSE] That retains the dimension ( ie, the matrixness ) of
the object.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Shubha Vishwanath Karanth
Sent: Tuesday, May 06, 2008 11:07 AM
To: [EMAIL PROTECTED]
Subject: [R] To preserve the class Matrix
Hi,
Suppose
a=matrix(1:9,3,3)
a
[,1] [,2] [,3]
[1,]147
[2,]258
[3,]369
Now,
class(a[1:2,])
[1] matrix
class(a[1:3,])
[1] matrix
class(a[,1:2])
[1] matrix
class(a[,1:3])
[1] matrix
But,
class(a[1,])
[1] integer
class(a[,1])
[1] integer
Can in a general way get class(a[1,]) or class(a[,1]) to be matrix only?
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San Josi * Singapore *
www.ambaresearch.com
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[R] Number of words in a string
Hi R,
A quick question: How do we find the number of words in a string?
Example:
C=Have a nice day
And the number of words should be 4. any built in function or?...
Thanks, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
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Re: [R] Number of words in a string
To put in more general,
C=c(My Dog, Its really good, Beautiful)
And the resultant output should be
[1] 2 3 1
...the number of words
Thank you...
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Shubha
Vishwanath Karanth
Sent: Wednesday, April 09, 2008 8:51 PM
To: [EMAIL PROTECTED]
Subject: [R] Number of words in a string
Hi R,
A quick question: How do we find the number of words in a string?
Example:
C=Have a nice day
And the number of words should be 4. any built in function or?...
Thanks, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
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Re: [R] Number of words in a string
Exactly...this is what I wanted... Can we also extract/remove the last word of
the strings?
Example:
C=c(My Dog, Its really good, Beautiful)
sapply(strsplit(C, ), length)
[1] 2 3 1
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Markus Gesmann [mailto:[EMAIL PROTECTED]
Sent: Wednesday, April 09, 2008 9:00 PM
To: Shubha Vishwanath Karanth; [EMAIL PROTECTED]
Subject: RE: [R] Number of words in a string
Would this:
sapply(strsplit(C, ), length)
work for?
Markus Gesmann │Associate Director│Libero Ventures Ltd, One Broadgate, London
EC2M 2QS
tel: +44 (0)207 826 9080│ dir: +44 (0)207 826 9085│fax: +44 (0)207 826 9090
│www.libero.uk.com
A Lehman Brothers Company
AUTHORISED AND REGULATED BY THE FINANCIAL SERVICES AUTHORITY
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Shubha
Vishwanath Karanth
Sent: 09 April 2008 16:21
To: [EMAIL PROTECTED]
Subject: [R] Number of words in a string
Hi R,
A quick question: How do we find the number of words in a string?
Example:
C=Have a nice day
And the number of words should be 4. any built in function or?...
Thanks, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
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Re: [R] Number of words in a string
Got all the answers using ?strsplit... Is there any way without using string
split?... More specifically... How can I just extract the last word in all the
strings without using ?strsplit ?
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Hans-Joerg Bibiko
Sent: Wednesday, April 09, 2008 9:10 PM
To: [EMAIL PROTECTED]
Subject: Re: [R] Number of words in a string
On 9 Apr 2008, at 17:29, Markus Gesmann wrote:
Would this:
sapply(strsplit(C, ), length)
work for?
or
length(unlist(strsplit(C, )))
--Hans
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Re: [R] Number of words in a string
To put it simple,
C=c(My Dog, Its really good, Beautiful)
Now,
SOMEFUNCTION(C) should give: c(My, Its really, )
Thanks,
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Shubha
Vishwanath Karanth
Sent: Wednesday, April 09, 2008 9:01 PM
To: Markus Gesmann; [EMAIL PROTECTED]
Subject: Re: [R] Number of words in a string
Exactly...this is what I wanted... Can we also extract/remove the last word of
the strings?
Example:
C=c(My Dog, Its really good, Beautiful)
sapply(strsplit(C, ), length)
[1] 2 3 1
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Markus Gesmann [mailto:[EMAIL PROTECTED]
Sent: Wednesday, April 09, 2008 9:00 PM
To: Shubha Vishwanath Karanth; [EMAIL PROTECTED]
Subject: RE: [R] Number of words in a string
Would this:
sapply(strsplit(C, ), length)
work for?
Markus Gesmann │Associate Director│Libero Ventures Ltd, One Broadgate, London
EC2M 2QS
tel: +44 (0)207 826 9080│ dir: +44 (0)207 826 9085│fax: +44 (0)207 826 9090
│www.libero.uk.com
A Lehman Brothers Company
AUTHORISED AND REGULATED BY THE FINANCIAL SERVICES AUTHORITY
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Shubha
Vishwanath Karanth
Sent: 09 April 2008 16:21
To: [EMAIL PROTECTED]
Subject: [R] Number of words in a string
Hi R,
A quick question: How do we find the number of words in a string?
Example:
C=Have a nice day
And the number of words should be 4. any built in function or?...
Thanks, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
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Re: [R] Number of words in a string
So powerful, the gsub... But I really don’t understand the how the regular expressions like *\\S+$, need to be used and how to make best use of it... Any article/material/links that I can go through? BR, Shubha Shubha Karanth | Amba Research Ph +91 80 3980 8031 | Mob +91 94 4886 4510 Bangalore • Colombo • London • New York • San José • Singapore • www.ambaresearch.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Charilaos Skiadas Sent: Thursday, April 10, 2008 3:10 AM To: Hans-Jörg Bibiko Cc: [EMAIL PROTECTED] Subject: Re: [R] Number of words in a string On Apr 9, 2008, at 1:27 PM, Hans-Jörg Bibiko wrote: On 09.04.2008, at 17:46, Shubha Vishwanath Karanth wrote: To put it simple, C=c(My Dog, Its really good, Beautiful) Now, SOMEFUNCTION(C) should give: c(My, Its really, ) SOMEFUNCTION - function(x) gsub( *\\w+$, , x) But be aware that this won't work for instance for combining diacritics. If you have this: C - c(My Dog, Its really good, Beautiful, Tuli faŝda) in fasda above the s is a combining circumfix ^ would give [1] My Its reallyTuli faŝ Then one should use the strsplit approach. How about: SOMEFUNCTION - function(x) gsub( *\\S+$, , x) Cheers, --Hans Haris Skiadas Department of Mathematics and Computer Science Hanover College __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden. Any views or opinions presented are solely those of the author and do not necessarily represent those of Amba Holdings Inc., and/or its affiliates. Important additional terms relating to this email can be obtained at http://www.ambaresearch.com/disclaimer __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Dimensions of a List
Hi R,
I have a list,
l=list(list(c(1,2),c(4,5),c(6,7)),list(c(11,22,33),c(44,55,66)))
l
[[1]]
[[1]][[1]]
[1] 1 2
[[1]][[2]]
[1] 4 5
[[1]][[3]]
[1] 6 7
[[2]]
[[2]][[1]]
[1] 11 22 33
[[2]][[2]]
[1] 44 55 66
How do I know the dimensions of this list?... In other words, how many
sub-lists, sub-sub-lists etc...are there in l? How do I know this?
Thanks in advance
Shubha
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Re: [R] Dimensions of a List
Thanks a lot for your reply...Exactly...I need the same...But can I store these
numbers and hence can access further? In other words how do I extract the
numbers/dimensions from this class?
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: jim holtman [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 25, 2008 9:21 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Dimensions of a List
Is this what you want?
l=list(list(c(1,2),c(4,5),c(6,7)),list(c(11,22,33),c(44,55,66)))
str(l)
List of 2
$ :List of 3
..$ : num [1:2] 1 2
..$ : num [1:2] 4 5
..$ : num [1:2] 6 7
$ :List of 2
..$ : num [1:3] 11 22 33
..$ : num [1:3] 44 55 66
On 3/25/08, Shubha Vishwanath Karanth [EMAIL PROTECTED] wrote:
Hi R,
I have a list,
l=list(list(c(1,2),c(4,5),c(6,7)),list(c(11,22,33),c(44,55,66)))
l
[[1]]
[[1]][[1]]
[1] 1 2
[[1]][[2]]
[1] 4 5
[[1]][[3]]
[1] 6 7
[[2]]
[[2]][[1]]
[1] 11 22 33
[[2]][[2]]
[1] 44 55 66
How do I know the dimensions of this list?... In other words, how many
sub-lists, sub-sub-lists etc...are there in l? How do I know this?
Thanks in advance
Shubha
This e-mail may contain confidential and/or privileged i...{{dropped:13}}
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem you are trying to solve?
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[R] RMysql question
R users,
I have a problem in RMysql. The error I get is:
library(RMySQL)
library(RMySQL)
options(expressions=1)
MySQL(max.con = 16, fetch.default.rec = 500, force.reload = FALSE)
Error: protect(): protection stack overflow
I have no idea of why the error is. Can anyone help on this?
Many Thanks,
Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
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and provide commented, minimal, self-contained, reproducible code.
[R] Transposing by a group variable
Hi R,
Can I transpose a data frame by a particular group variable?
For example:
d=data.frame(group=c(1,1,2,2,2),val=c(6,4,6,3,5))
And my output should be:
data.frame(group=c(1,2),v1=c(6,6),v2=c(4,3),v3=c(NA,5))
Many thanks,
Shubha
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[R] .fortran code
Hi,
I need to look/understand what the .fortran() doing in say, the source
code of the eigen command. How do I look into this?
Thanks,
Shubha
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[R] wilderSum
Hi,
Can somebody tell me the formula for ?wilderSum in TTR package? I mean how
are these calculated?
BR, Shubha
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
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[R] Accessing the elements of a list
Hi R,
I wanted to know how do we access the elements of a list. In particular,
v=list(c(1,2,3,4,5),c(1,2,33,4,5),c(1,2,333,4,5),c(1,2,,4,5))
I want to access all the thirds items of the elements of the list. i.e.,
I want to access the elements, 3,33,333,. This can be done through
sapply as:
sapply(v,function(x) x[3])
But I need to access this without using 'sapply'. Like in a data frame,
we do df[2,3] etc Any ideas?
BR, Shubha
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[R] acf lag1 value
Hi R,
I have doubt.
x= c(4,5,6,3,2,4,5)
acf(x,plot=F,lag.max=1)
Autocorrelations of series 'x', by lag
0 1
1.000 0.182
But if I actually calculate the autocorrelation at lag1 I get,
cor(x[-1],x[-length(x)])
[1] 0.1921538
Even in excel I get 0.1921538 value. So, I want to know what the 'acf'
function is calculating here
Thanks in advance,
Shubha Karanth
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Re: [R] acf lag1 value
Thank you Professor...
Shubha Karanth | Amba Research
Ph +91 80 3980 8031 | Mob +91 94 4886 4510
Bangalore * Colombo * London * New York * San José * Singapore *
www.ambaresearch.com
-Original Message-
From: Prof Brian Ripley [mailto:[EMAIL PROTECTED]
Sent: Thursday, January 17, 2008 2:27 PM
To: Shubha Vishwanath Karanth
Cc: [EMAIL PROTECTED]
Subject: Re: [R] acf lag1 value
Please re-check your time-series books. The acf at lag 1 is _not_ the
correlation between x and lag(x). For one thing, the variance of x is
computed from the whole series, and not from the series with either the
first or last value removed -- there is also the question of the divisor.
See MASS p.390 for the formulae used.
On Thu, 17 Jan 2008, Shubha Vishwanath Karanth wrote:
Hi R,
I have doubt.
x= c(4,5,6,3,2,4,5)
acf(x,plot=F,lag.max=1)
Autocorrelations of series 'x', by lag
0 1
1.000 0.182
But if I actually calculate the autocorrelation at lag1 I get,
Not the right formula.
cor(x[-1],x[-length(x)])
[1] 0.1921538
Even in excel I get 0.1921538 value. So, I want to know what the 'acf'
function is calculating here
Thanks in advance,
Shubha Karanth
This e-mail may contain confidential and/or privileged i...{{dropped:13}}
__
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UKFax: +44 1865 272595
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[R] EQUALITY constraints in 'constrOptim'
Does anybody know to introduce EQUALITY constraints in 'constrOptim'
function?
BR, Shubha
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[R] Accesing the value
Hi R,
x=A
A=5
I need to get the value of A using x only. How do I do this?
Thanks in advance, Shubha
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[R] iid.test package/ncdf package
Hi R,
I want to conduct iid tests. So, I went to download 'iid.test' package.
And the dependent package is 'ncdf', which is not available. So, how do
I conduct the IID tests? Can I do these iid tests in Base R?
Thanks in advance,
Shubha
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