similar to: Cause of Error 1:nrow(X) : argument NA / NaN

Dear r-helpers, I have been bitten by a cryptic comment in the help page for xYplot(). Here is some code from Madeline Bauer, one of the authors, which is essentailly the code on the help page for xYplot(): # This example uses the summarize function in Hmisc to # compute the median and outer quartiles. The outer quartiles are # displayed using "filled bands" set.seed(111) dfr

Dear R users, The Sweave code below runs fine, as it is. However, an error occurs when the line 'library(xtable)' is uncommented: Error: chunk 1 Error in "label<-"(`*tmp*`, value = "month") : no applicable method for "label<-" Is anybody aware of this and knows a workaround? Thanks, Sander. *******************

Hello, I'm currently using a simple plot to visualize some mean values. I'm having ~200 datapoints on the x-axis, each has 10 records. I'm currently plotting only the mean value of each of the datapoints. What I need is a way to visualize the quartiles/error/whatever of these points. I thought about boxplots, but I have to many points on the xaxis - it would be impossible to see

I have developed a GAM model in order to predict Y using 4 X variables. 2 of these X's are factors, and 1 is a spline. Part of the data looks like: Days WRM variety PWM O_EC 31 75 1 90 234 31 79 1 78 283 31 82 1 92 281 31 84 1 96 213 31 99 2 69 247 31 100 2 77 324 31 104 2 74 259 31 118 2 81 282 31 61 3 58 478 31 98 3 83 429 31 98 3 70 379 31 156 3 87 467 31 78 4 56 283 31 97 4 67 282 31

Dear R-developers, I am currently trying to develop a package with some customized container classes and found an issue with the functions NROW and NCOL. I guess that I can simply work around the problem by redefining these functions in my own package (Yet, I do not know whether that will work cleanly everywhere). Nevertheless, I thought that perhaps one might think about to redefine these

Dear R Helpers, I need to read time from a .csv file which is formated as chartime (09:12:00) below. I need to add one minute (cf chartime2). Then I need to output the value just as 09:13 without the seconds for writing a csv file and input in another program. I get it with the following reproducible example but I can't help thinking that there must a less clumsy way to do that ! Thanks

I am using Donlp2 package to solve a non-linear problem, but there's an error I always meet: Error in matrix(unlist(value, recursive = FALSE, use.names = FALSE), nrow = nr, : attempt to set an attribute on NULL I have been suffering from this bug for a long time. I'll be very grateful if somebody could help me -_- -- View this message in context:

Dear R, Can't I cluster a dataset into k clusters where k is exactly the number of observations? I have version 12.2 installed. See this example > a <- matrix(1:100, 20) > kmeans(a, 20) Error: number of cluster centres must lie between 1 and nrow(x) This is a bit ad-hoc but I known R from version 2.12 allows number of clusters to be one. So I guess allowing number of clusters to be

Dear R-developers I'm not very sure whether this is really a bug and not a feature: > is.matrix(svd(matrix(1:12,nrow=1))$v) [1] FALSE In all other cases the $v component is a matrix. Also, the $u component always seems to be a matrix as indicated in the doc. My R-version: > version _ platform i686-pc-linux-gnu arch i686 os linux-gnu

Full_Name: Xiong Guanglei Version: 1.8.1 OS: Linux Submission from: (NULL) (202.38.103.50) > as.matrix(1:10,nrow=1) Error in as.matrix(1:10, nrow = 1) : unused argument(s) (nrow ...)

>>>>> Gabriel Becker >>>>> on Thu, 16 May 2019 15:47:57 -0700 writes: > Hi Hadley, > Thanks for the counterpoint. Response below. > On Thu, May 16, 2019 at 1:59 PM Hadley Wickham <h.wickham at gmail.com> wrote: >> The existing behaviour seems inutitive to me. I would consider these >> invariants for n vector

Hey there, I tried to count the number of rows, where my data isn't NaN in a certain column. this was my guess: (given is a data frame with 2069 rows and 17 cols) NROW(data[jan,16] != NaN) ("jan" is defined this way: jan <- which(data[,2]==1, arr.ind= TRUE)) but I only get the number of columns where my data is "1" in the second col. R isn't removing the

Hello I'm having trouble using lars and glmnet functions to predict on a new data set with different nrow then the original : for instance: ============= log.1 = glm(temp.data$TL~(.),temp.data,family = binomial,x=TRUE,y=TRUE) nrow(test.data) != nrow(temp.data # == TRUE Val.frame = model.frame(log.1,test.data) # returns a data frame with the variables needed to use log.1

Hi fellow R-users, I have run into a problem when trying to identify the number of rows in a matrix. Say we have an arbitrary 5 by 5 matrix called temp: temp <- matrix(norm(25), nrow=5) The problem is that nrow(temp[1,]) returns NULL. I would like it to return 1 because in my larger program I am indexing the rows of large matrices according to another variable and I need to test when the

The existing behaviour seems inutitive to me. I would consider these invariants for n vector x_i's each with size m: * nrow(rbind(x_1, x_2, ..., x_n)) equals n * ncol(rbind(x_1, x_2, ..., x_n)) equals m Additionally, wouldn't you expect rbind(x_1[i], x_2[i]) to equal rbind(x_1, x_2)[, i, drop = FALSE] ? Hadley On Thu, May 16, 2019 at 3:26 PM Gabriel Becker <gabembecker at

Hello Everyone- I'm calculating summary statistics on a dataset (~4000 records, observations are not uniformly distributed) using summaryBy and trying to add a column with the number of observations to the output as well. What occurs to me is to use nrow(), but this doesn't appear to be working I'm able to replicate the same results with an example from the summaryBy docs:

The help has > Description: > 'nrow' and 'ncol' return the number of rows or columns present in 'x'. > 'NCOL' and 'NROW' do the same treating a vector as 1-column matrix. and > x: a vector, array or data frame I'm proposing to extend these two convenience functions to also work ``correctly'' for generalized versions of

Dear list, I do not know what would be the 'correct' answer to the following but I think that they should return the same value to avoid potential problems and hard to debug errors. Regards, Simone --------------------------------------- > NCOL(NULL) [1] 1 > NROW(NULL) [1] 0 > sessionInfo() R version 4.3.1 RC (2023-06-08 r84523 ucrt) Platform: x86_64-w64-mingw32/x64 (64-bit)

Dear Rers, I have a function to barplot() a matrix, eg myfun <- function(x, ...) { barplot(x , ... )} (The real function is more complicated, it does things to the matrix first.) So I can do: m1 <- matrix(1:20,4) myfun(m1) myfun(m1, main="My title") I'd like to be able to add the number of rows of the matrix passed to the function to the "..." argument, eg

Hi Gabe, ? ncol(data.frame(aa=c("a", "b", "c"), AA=c("A", "B", "C"))) ? # [1] 2 ? ncol(data.frame(aa="a", AA="A")) ? # [1] 2 ? ncol(data.frame(aa=character(0), AA=character(0))) ? # [1] 2 ? ncol(cbind(aa=c("a", "b", "c"), AA=c("A", "B", "C"))) ? #