similar to: error using ddply to generate means

Displaying 20 results from an estimated 110 matches similar to: "error using ddply to generate means"

2002 Aug 01
6
update() can not find objects (PR#1861)
Full_Name: Yi-Xiong Zhou Version: 1.5.1 OS: win2000pro Submission from: (NULL) (64.169.249.42) Update() can not find objects when it is used in a function, which is in turn being called by another function. Here is a R script to show the problem: ######## begin of the test script ########## fun1 <- function() { x <- matrix(rnorm(500), 20,25) y <- rnorm(20) oo <- lm(y~x)
2012 Aug 12
3
Error in if-command
Hello everybody, I don't understand what I'm doing wrong. But it isn't possible that each element of the if-condition is tested for each vector element? y <- c(1:20) > y [1] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 > if (y == c(4,5,9,11,17)) { print("yes") } else { print("no")} [1] "no" warning: In if (y == c(4, 5, 9, 11,
2011 Apr 09
1
loop and sapply problem, help need
Dear R experts Sorry for this question M1 <- 1:10 lcd1 <- c(11, 22, 33, 44, 11, 22, 33, 33, 22, 11) lcd2 <- c(22, 11, 44, 11, 33, 11, 22, 22, 11, 22) lcd3 <- c(12, 12, 34, 14, 13, 12, 23, 23, 12, 12) #generating variables through sampling pvec <- c("PR1", "PR2", "PR3", "PR4", "PR5", "PR6", "PR7",
2020 May 02
1
issues with environment handling in model.frame()
Dear all, model.frame behaves in a way I don't expect when both its formula and subset argument are passed through a function call. This works as expected: model.frame(~wool, warpbreaks, breaks < 15) #> wool #> 14 A #> 23 A #> 29 B #> 50 B fun1 <- function(y) model.frame(~wool, warpbreaks, y) fun1(with(warpbreaks, breaks < 15)) #> wool #> 14
2011 Nov 23
2
How to increase precision to handle very low P-values
Hello, Rlisters I have to compute p-values that are on the tail of the distribution, P-values < 10^-20. However, my current implementations enable one to estimate P-values up to 10^-12, or so. A typical example is found below, where t is my critical value. ########### example - code adapted from Rassoc ####################### rho01 = 0.5 rho105 = 0.5 rho005 = 0.5 t = 8 z = 2
2007 May 17
1
use loop or use apply?
Hi, I have two matrices, A (axd) and B (bxd). I want to get another matrix C (axb) such that, C[i,j] is the Euclidean distance between the ith row of A and jth row of B. In general, I can say that C[i,j] = some.function (A[i,], B[j,]). What is the best method for doing so? (assume a < b) I have been doing some exploration myself: Consider the following function: get.f, in which,
2012 Nov 11
2
changing the signs in rows or columns in matrices and check them if they are identical
Dear R users, i have this problem with matrices i want to check between two matrices if they are isomorphic i will give an example for what excactly i want   1 -1  1                                 -1  1   1 -1   1  -1                                1  -1  -1   1  1   -1                                1   1  -1 this two matrices are isomorphic beacause if i change the first 2 columns the matrices
2013 Jun 07
4
matched samples, dataframe, panel data
I R-helpers #I have a data panel of thousands of firms, by year and industry and #one dummy variable that separates the firms in two categories: 1 if the firm have an auditor; 0 if not #and another variable the represents the firm dimension (total assets in thousand of euros) #I need to create two separated samples with the same number os firms where #one firm in the first have a corresponding
2020 Apr 22
3
how to add my own passes to LTO pass
Hi, I have a module pass and I hope to use it to optimize a real-world program. I need LTO,and I have got LTO plugin. But How can I add my passes to LTO Pass. I can't find solution. What should I do? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20200422/76d2b046/attachment.html>
2007 Jan 06
1
listing all functions in R
Dear List, I'm building an R syntax highlighting file for GeSHi [*] for a website I am currently putting together. The syntax file needs a list of keywords to highlight. How can I generate a list of all the functions in a base R installation? Ideally the list would be formatted like this: "'fun1', 'fun2', 'fun3'" when printed to the screen so I can copy
2007 Aug 07
2
backslash c
How do I get output with "\color{blue}", i.e. with only one backslash??? > "\color{blue}" [1] "color{blue}" Warning messages: 1: '\c' is an unrecognized escape in a character string 2: unrecognized escape removed from "\color{blue}" > "\\color{blue}" [1] "\\color{blue}" > Any help greatly appreciated. Best regards,
2002 Apr 12
1
Problems with memory
Dear all, I've started working with R (vs 1041) a few weeks ago, and now I'm having problems with the amount of memory. I'm working on the windows-me, my computer has 128 Mb of memory. I'm using the R under the emacs (ESS-5.1.20) and it is started by the command: Rterm --min-vsize=10M --max-vsize=100M --min-nsize=500k --max-nsize=1M I've been had problems when executing a
2007 Dec 30
3
Date formats
Is the following expected behaviour for a date used in an ifelse function? > date <- Sys.Date() > date [1] "2007-12-30" > ifelse(TRUE, date-1, date) [1] 13876 > ifelse(FALSE, date-1, date) [1] 13877 > ifelse(TRUE, as.character(date-1), date) [1] "2007-12-29" > if (TRUE) {date} [1] "2007-12-30" It would seem more natural to me if a date produced
2007 Nov 13
2
[LLVMdev] BasicAliasAnalysis and out-of-bound GEP indices
Hi! While investigating into the PR1782 I spent some time analyzing BasicAliasAnalysis.cpp. While the mentioned problem should be fixed now (I hope), I have discovered some other possibilities for a bug to occur. In the case of checking for aliasing of two pointer values, where at least one of them is a GEP instruction with out-of-bound indices, BasicAliasAnalysis can return NoAlias, even if the
2013 Sep 16
1
Patch: fix segfault from empty raster
Hi, A colleague recently came across an R crash, which I can boil down to the following, running under Rgui on Windows 7: library(ggplot2) ggplot(data.frame(x=1, y=1, z=4.7), aes(x, y, z=z)) + stat_summary2d() This reliably causes a segmentation fault. sessionInfo() below. What's happening is that (for reasons which I'll discuss with the ggplot2 developers) the 'colorbar'
2008 Mar 28
1
cpu usage high with windows change dir / winDialogString (PR#11045)
Good afternoon, This is possibly a windows only bug, definitely of comparatively low importance - but for the sake of completeness here we go. I've searched http://bugs.R-project.org/ etc., but can find no mention. For RGui.exe, the CPU usage goes to 100% for certain dialog boxes for the duration that the dialog box is visible, e.g. * check CPU usage is low * On the RGui.exe menu chose
2010 Oct 20
1
need for speed on grid.rect
When I use grid.rect to print a multi-coloured grid, it is incredibly slow compared to a single colour grid, or even a two colour grid. I've set out some simplified examples below. This is something I run literally thousands of times a day, so I would greatly appreciate any hints on how I might improve the speed??? library(grid) pushViewport(viewport( width = unit(100,
2012 Jan 06
1
ggplot using scale_x_date gives Error in seq.int(r1$year, to$year, by)
Dear all, ggplot gives me an error when trying to plot time series data using a date variable as the x axis. g<-structure(list(Date = c("2011-12-23", "2011-12-30", "2012-01-06", "2011-12-23", "2011-12-30", "2012-01-06", "2011-12-23", "2011-12-30", "2012-01-06"), variable = structure(c(1L, 1L, 1L, 2L, 2L,
2007 Sep 30
1
clipping viewports
Dear useRs, Why are the rotated blue and yellow boxes in the example below clipped outside of 6 x 6 inch window in the middle of the page?? Where does the 6 x 6 inch window come from? I would like to make use of the entire page. > library(grid) > pdf(file = "FarmMaps.pdf", paper = "a4") > pushViewport(viewport( + width = unit(7.6, "inches"), height =
2008 Mar 29
0
cpu usage high with windows change dir / winDialogString (PR#11051)
On 28/03/2008 12:05 PM, seanpor at acm.org wrote: > Good afternoon, > > This is possibly a windows only bug, definitely of comparatively low > importance - but for the sake of completeness here we go. I've > searched http://bugs.R-project.org/ etc., but can find no mention. > > For RGui.exe, the CPU usage goes to 100% for certain dialog boxes for > the duration that