similar to: Trouble With Dates; Recommended Reference?

Full_Name: Ronnen Levinson Version: 1.5.1 OS: Mac OS 10.1 Submission from: (NULL) (12.232.201.92) The value returned by strptime behaves badly after arithmetic operation and/or combination. > a=strptime("2002-06-01 12:15:01","%Y-%m-%d %H:%M:%S") > a [1] "2002-06-01 12:15:01" > a+0 [1] "1932-04-25 21:46:45" > a+3600 [1] "1932-04-25

Hello. I have an R program that calls gawk (GNU Awk 3.06 for Windows) from within pipe() to preprocess a large file before it is read into a data frame with read.table(). I've recently upgraded from Win98SE to WinXP, and have also upgraded from R1.5.0 to R1.6.1 over the past month or so. This program worked before the upgrade(s), but now fails. I observe the following sort of behavior with

Hello. I have an XYY series that I would like to graph with matplot() or some other single function that will do the trick. The X in question is a vector of POSIXt values obtained from strptime(). Is it possible to tell matplot() how to handle POSIXt x values? I have examined the examples at http://lark.cc.ukans.edu/~pauljohn/R/statsRus.html#5.22 , but would prefer not have to overlay the

(I'm reposting this message because the original has not appeared after about 2 days. Sorry if it shows up twice.) Hello. First, thanks to those who responded to my recent inquiry about using contour() over arbitrary (x,y) by mentioning the interp() function in the akima package. That worked nicely. Now for a new question: I would like to use a pair of prediction intervals to

Hi. The following statement works fine in R-win 1.8.0, but yields a syntax error in R-win 2.0.1 (and possibly in other versions after 1.8.0): plot(c(1,2),main=expression(a==b==c)) I note that the following workaround executes successfully in both versions of R... plot(c(1,2),main=expression(a*"="*b*"="*c)) ...but I don't really understand

Hi. Can anyone suggest a simple way to obtain in R a list of vector coordinates of the following form? The code below is Mathematica. In[5]:= Flatten[Table[{i,j,k},{i,3},{j,4},{k,5}], 2] Out[5]= {{1,1,1},{1,1,2},{1,1,3},{1,1,4},{1,1,5},{1,2,1},{1,2,2},{1,2,3},{1 ,2,4},{1,2, 5},{1,3,1},{1,3,2},{1,3,3},{1,3,4},{1,3,5},{1,4,1},{1,4,2},{1,4,3}, {1,4,

Hello. Is it possible to set specify the font used by legend()? I would like to specify a fixed-width font so that I can line up parts of vertically stacked curve labels. For example, it would be nice if I could align the names, ages, and weights in the following three curve labels: Bob age=7 weight=100 Alexander age=13 weight=150 Susan age=20 weight=130 Is there perhaps a clever

Hi. As shown in the simplified example below, I'm having trouble allocating memory for large vectors, even though it would appear that there is more than enough memory available. That is, even with a memory limit of 1500 MB, R 2.6.1 (Win) will allocate memory for a first vector of 285 MB, but not for a second vector of the same size. Forcing garbage collection does not seem

Hello. Is there an easy-to-use contour plot function analogous to scatterplot3d that can draw handle a dataset of arbitrary (x,y,z) triplets? That is, say x, y, and z are each measured quanties, and exhibit neither order nor regularity. I looked at the lattice package function "contourplot" but it seems complicated, and it's not clear from the documentation whether it can

Hi. I often wind up with many help windows cluttering my RGui screen when running Windows R 2.0.1. Is there an R instruction to close one or more help windows, or an RGui command to close all help windows? Yours truly, /Ronnen. /P.S. E-mailed CC:s of posted replies appreciated. [[alternative HTML version deleted]]

Hi. Is there an analog to abline() that can be used to plot a polynomial fit? For example, I can draw the straight-line fit fit <- lm(y ~ x) via abline(coef=fit$coef) but I'm not sure how to draw the polynomial fit fit <- lm(y ~ poly(x,2)) I do see the function curve(), but not how to prepare an expr for curve() based on the coefficients returned by the polynomial

(1) With MSVCRT.DLL (version 4.20.6164) from ftp://ftp.microsoft.com/softlib/mslfiles/msvcrt.exe installed in rw1051\bin directory, as per RWinFAQ 2.14: RGUI caused an invalid page fault in module MSVCRT.DLL at 017f:78014b90. Registers: EAX=0093007a CS=017f EIP=78014b90 EFLGS=00010246 EBX=017a2360 SS=0187 ESP=0091eee4 EBP=0091ef10 ECX=ffffffb5 DS=0187 ESI=00000000 FS=5bbf EDX=81d7d520 ES=0187

Hello, I have read recent posts on this topic (Dr. Ronnen Levinson's Monday 02:39:55 pm), but before I install a 64 bit system, and purchase more RAM, I want to make sure I understand this interesting issue. I was attempting to plot a data frame containing Dow Jones stock information: > length(Date) [1] 19957 > length(Close) [1] 19957 > head(DowJones) Date Open High

Hi, I am doing my first steps with R. This worked so far: - Installed R1.5.1 from binary distribution - Installed SJava 0.62.8 from binary distribution - Executed Java statements within R Problem: If I call R from Java, I get an UnsatisfiedLinkError: RInterpreter.DLL not found. This DLL is completely missing, I searched all drives for it. In "Calling R from Java" I found a hint:

Dear R-users, has anybody combined the glm function with the Newey-West estimator of variance, similar as in Stata 7.0? I'd like to estimate corrected standard errors within a logistic regression model, taking into account the auto-correlated binary observations within individuals. I use R1.5.1 on Mac OS X (10.2). Thanks, Christof

Bob O'hara wrote: > I'm a bit reluctant to call anything a bug: I know it's usually my > incompetence instead. In this case, I can't see what else it is, > although it may be a bug in Windows. > > The problem comes from trying to create a .png of a figure in Windows > XP, with R2.1.0. On the screen it looks OK, but in the .png the text > for the x label

I have tried and tried unsuccessfully to place a legend outside the plot frame of a graph. This would allow me to draw a legend for an image() plot. But any legend I add is cut off outside the axes. Is there a way of doing this? Thanks for any advice on how to make this work (I'm using R1.5.1 with Windows 2000). Richard Condit Smithsonian Tropical Research Institute Unit 0948 APO AA

Full_Name: Heinz Grimm Version: R1.5.1 OS: Windows NT Submission from: (NULL) (195.65.178.178) Line 11 is: "DLLLIBS=-L'c:/jdk1.3/lib' -L$(JAVA_HOME)/jre/bin/hotspot...." should be: "DLLLIBS=-L$(JAVA_HOME)/lib -L$(JAVA_HOME)/jre/bin/hotspot...." Line 59 is: " (cd .. ; ./configure.win $(RHOME))" should be: " (cd .. ; sh ./configure.win $(RHOME))"

Hi, i really positive surprised when i found the "get.hist.quote" but didn't now why i get with the examples from Online-Help errorMessages. Perhaps their is a problem with POSIX and my OS WIN2000/R1.5.1 ? Thanks for advance & regards,Christian $ ibm <- get.hist.quote(instrument = "ibm", start = "1998-01-01") trying URL `

Hi, I am trying to run the example "JavaRCall" with SJava 0.65 and R1.5.1 under Windows NT4.0. Although loadLibrary("RInterpreter") worked successfull, the following error occurs: "Exception breakpoint occurred at line 65 of ROmegahatInterpreter.java. java.lang.UnsatisfiedLinkError: boolean org.omegahat.R.Java.ROmegahatInterpreter.initR(java.lang.String[]) boolean