similar to: Help with expression

Displaying 20 results from an estimated 10000 matches similar to: "Help with expression"

2010 Sep 09
6
Reproducible research
I am investigating some approaches to reproducible research. I need in the end to produce .html or .doc or .docx. I have used hwriter in the past but have had some problems with verbatim output from R. Tables are also not particularly convenient. I am interested in R2HTML and R2wd in particular, and possibly odfWeave. Does anyone have sample documents using any of these approaches which
2009 Aug 12
3
Combinatorial problem
I have been struggling trying to write some code to produce all combinations subject to some restrictions. I thought someone might have some bright ideas. I have 11 values which fall into 5 groups. I want all combinations of 2,3, and 4 values where each value must be from a different group. The numbers in the groups are different. Here is a definition of the groups: groups <- list(gp1 =
2010 Jan 20
1
Greek letters on a multi-line plot title
I have an instance where I need to include Greek letters on a plot title that is multiple lines. ? I've searched the forums for an approach to do this, but most of the previous posts and replies seem to just address instances of single line examples and problems:, e.g. ? https://stat.ethz.ch/pipermail/r-help/1999-October/005096.html ? I tried implementing those suggestions, e.g.
2010 Jan 25
2
Microsoft SQL Server and R
I have a client running Microsoft SQL Server. I am interested in ways of accessing data from this server using R. I would welcome any information about how this can be done. I have a reasonable grasp of SQL and have experience with MySQL and RODBC but don't know anything much about Microsoft SQL Server. David Scott -- _________________________________________________________________
2011 Sep 28
1
Printing an xtable with type = html
I have been playing around with producing tables using xtable and the type = "html" argument when printing. For example, if xtbl is the output of a dataframe which has been run through xtable, using the command: print(xtbl, type = "html", html.table.attributes = "border = '1', align = 'center'") I would be interested to see other examples of
2009 Dec 16
1
Stata files
I have a client who uses Stata 11. Can anyone advise me on ways of transferring data from this version of Stata to R? Reading the documentation for read.dta in package foreign it seems it only allows for versions up to Stata 10. I don't know Stata at all but a bit of poking around on their website led me to believe Stata 11 couldn't write in Stata 10 format. However Stata 11 can
2010 Dec 22
2
License statement
I am writing a package for a company for its internal use only. What is an appropriate license statement for the DESCRIPTION file? I would like a statement which reflects the private and proprietary nature of the package, giving copyright to the writer and the company. I also don't want to violate the licensing of R and the packages I am using (RODBC, ggplot2, zoo). David Scott --
2009 Nov 20
1
Bessel function with large index value
I am looking for a method of dealing with the modified Bessel function K_\nu(x) for large \nu. The besselK function implementation of this allows for dealing with large values of x by allowing for exponential scaling, but there is no facility for dealing with large \nu. What would work for me would be an lbesselK function in the manner of lgamma which returned the log of K_\nu(x) for large
2009 Feb 23
3
Dates and times from Excel
I have used xlsReadWrite to read data from an Excel spreadsheet. I had a problem with converting times of the day so that I could create POSIXct date-time objects. I was wondering if there was a better solution. Excel stores times of the day as fractions of a day so I wrote a function to convert the fraction to a number of seconds, extract the hours, minutes and seconds and output it in ISO
2010 Apr 11
1
Statistical test for stationarity-how
How to find out if EURGBP is stationary? Post the R codes for the same.
2009 Jun 25
3
what happened to the xlsReadWrite package
A naive question: what happened to the xlsReadWrite package? http://cran.r-project.org/web/packages/xlsReadWrite/ It says that it was removed from the CRAN repository. Are there any plans for it be available again? Thanks, Andrew [[alternative HTML version deleted]]
2009 Aug 11
1
metaplot in rmeta: y-axis disappears
Hi, I have a problem with the metaplot-function in rmeta. After plotting a Forest Plot with "metaplot", no y-axis is shown for normal plots anymore. Does someone know, why this is and how I can solve it? Thank you in advance! Kind regards, Roman -- View this message in context: http://www.nabble.com/metaplot-in-rmeta%3A-y-axis-disappears-tp24917401p24917401.html Sent from the R
2009 Aug 18
1
combined value in forestplot function
Hi, How is the combined value (displayed by a diamond on the forest plot) of a meta-analysis illustrated by a forest plot calculated? The applied method and all calculation details are welcome. Thanks Carol [[alternative HTML version deleted]]
2009 Aug 30
3
test for bimodality&In-Reply-To=
Has a test for bimodality been implemented in R? Thanks, John NIWA is the trading name of the National Institute of Water & Atmospheric Research Ltd.
2009 Sep 07
1
Equivalence of Mann-Whitney test and Kruskal-Wallis test with k=2
Hi all, The Kruskal-Wallis test is a generalization of the two-sample Mann-Whitney test to *k* samples. That being the case, the Kruskal-Wallis test with *k*=2 should give an identical p-value to the Mann-Whitney test, should it not? x1<-c(1:5) x2<-c(6,8,9,11) a<-wilcox.test(x1,x2,paired=FALSE) b<-kruskal.test(list(x1,x2),paired=FALSE) a$p.value [1] 0.01587302 b$p.value [1]
2009 Dec 21
2
Maximum spacing method
Hi! I'm trying to compare maximum likelihood estimator with maximum spacing estimator (in Generalized extreme value distribution). My problem is the following: i know how to determinate maximum likelihood estimator on R, but i dont find a way to do the maximum spacing estimator...:-( Any help would be great:-) -- View this message in context:
2010 Mar 10
1
Importing Access 2007 data with ROBC
Hi all, I'm trying to import Microsoft Access data into R. It looks like I'm supposed to use the ROBC package, and this works fine with old Access files (those with an .mdb extension). However, lovely Microsoft must constantly update their software. Modern Access files have an .ACCDB extension. I cannot seem to coerce R to import data from such a file. Any advice? I've been using
2010 Aug 23
2
Engle Granger Test in R
Hi, Please tell me the R codes for Engle Granger Test of cointegration. TIA Aditya
2011 May 09
3
converting a matrix or data.frame into an html table
Dear all, Is there a function in R to convert a matrix or a data.frame into an html table? Many thanks, Samuel [[alternative HTML version deleted]]
2011 Oct 13
1
Fitting a Harmonic Function to Time Series Data
Dear All, I have some time series data where X=month and Y=nutrient concentration (I can have several concentration data for one month). Is there a way to fit for it an Harmonic Function. Is there a package, script,etc which I can use? Thx -- View this message in context: http://r.789695.n4.nabble.com/Fitting-a-Harmonic-Function-to-Time-Series-Data-tp3901266p3901266.html Sent from the R help