Recent questions tagged R

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Suppose I'm trying to run a script of unknown origin, and one of the functions is from a package that is not ... raw data that these tools use. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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430 views

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r - Keep only groups of data with multiple observations

I am attempting to keep only deids with multiple observations. I have the below code help <- data.frame ... assistance is greatly appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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327 views

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r - Guard against accidental time-zone conversion

In R, I have a bunch of datetime values that I measure in GMT. I keep running into accidents where some ... sure their dates "stay put"? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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r - Can't use either View() or edit() functions, getting "Error in .External2(C_dataviewer, x, title) : invalid device" error message

I'm running R through the Terminal in a Mac OSX Snow Leopard system. I get this error message when ... grDevices utils datasets methods base See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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285 views

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r - How can I pass individual `curvature` arguments in `ggplot2` `geom_curve` function?

I have a df with two curve definitions, each consists of two points and a curvature value. The goal is ... argument individually for each row? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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r - join datasets using a quosure as the by argument

I am trying to write a custom function that will join two datasets using a quosures as the arguments in the " ... I would be very grateful. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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508 views

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r - Regex; eliminate all punctuation except

I have the following regex that splits on any space or punctuation. How can I exclude 1 or more punctuation ... "getting" "better" "!" See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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r - Why does as_tibble() round floats to the nearest integer?

When using as_tibble in dplyr 0.7.4 and R 3.4.1 I get the following outputs mtcars %>% aggregate(disp ~ ... happening and how can I avoid it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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r - Unexpected symbol error in parse(text = str) with hyphen after a digit

I am trying to parse a character string in R. R throws an "unexpected symbol" or "unexpected end of input" ... Thank you very much in advance! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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r - Row-wise sum of values grouped by columns with same name

I have a data frame where several columns may have the same name. In this small example, both column "A" and " ... way to do this more simply? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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990 views

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r - Let ggplot2 histogram show classwise percentages on y axis

library(ggplot2) data = diamonds[, c('carat', 'color')] data = data[data$color %in% c('D', 'E') ... respectively for two color classes. Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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580 views

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r - force a regular plot object into a Grob for use in grid.arrange

b <- ggplot(cars,aes(x=speed,y=dist))+geom_line() grid.arrange( b, plot(cars), ncol=1 ) gives me the ... so it plays nicely with grid.arrange ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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259 views

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r - Print a list of dynamically-sized plots in knitr

I want to be able to print out non-predetermined list of plots in knitr. I am able to do that, but there ... PDF of the plots looks like this: See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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695 views

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r - How to rbind only the common columns of two data sets

I have 2 data frames with different number of columns each. Some of the columns are common between the 2 data ... help me. Thanks a lot EC See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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r - how to rearrange an order of matches between two data frames

I have been busy with this question since last night and I could not figure out how to do it. What I want ... matched with that string and so on See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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739 views

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r - Error in install.packages : cannot remove prior installation of package ‘DBI’

I attempted install.packages("RMySQL") and it runs for a second and then says: Error in install.packages : cannot ... wrong area? I'm confused. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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422 views

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r - Why does as.matrix add extra spaces when converting numeric to character?

If you use apply over rows on a data.frame with character and numeric columns, apply uses as.matrix internally to ... with as.matrix is useful? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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284 views

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r - How to manage a table/matrix to obtain information using conditions

Ive been thinking about what is the best way to solve this, any advise? The table/matrix X is: X <- read.table(text = " ... 0-35 4 4 5 7 7 9 10 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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r - Rolling join grouped by a second variable in data.table

Hello I would like to perform a rolling join in R using the data.table package. There are multiple matches when ... ' is supplied but not j See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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301 views

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r - Display duplicate records in data.frame and omit single ones

I have been struggling with how to select ONLY duplicated rows of data.frame in R. For Instance, my data.frame is ... .8 Thanks for your time... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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601 views

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r - How to add sum to zero constraint to GLM in Python?

I have a model set up in Python using the statsmodel glm function but now I want to add a sum to ... any advice to applying this constraint? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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298 views

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r - sum specific columns among rows

I need to sum every two columns for example x1 x2 x3 x4 12 2 3 7 1 4 6 5 I need X1 X2 14 10 5 11 I tried apply ... ,j]=mat[j,i]+mat[j,i+1] }} See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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278 views

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r - Create a new variable based on the first 7 characters of existing variable

I've been struggling to create a new variable which contains only the first seven characters of an existing variable ... substr(variable2, 1, 7) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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429 views

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r - How to save a leaflet map in Shiny

Following on from this question, I am looking to save and download a leaflet map as a png or jpeg image ... get this working with leafletProxy. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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245 views

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r - Extract data between a pattern from a text file

I am working with a text file where data look like below ******************************* ... . Any help would be greatly appreciated. Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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387 views

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r - The representation of an empty argument in a "call"

What kind of animal is an empty argument? Consider the following piece of code. > f <- function(...) match.call( ... 1] "" What sorcery is that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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324 views

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r - Passing a list of arguments to a function with quasiquotation

I am trying to write a function in R that summarizes a data frame according to grouping variables. The grouping ... way to rewrite the function? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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289 views

1 answer

r - accessing Y columns with duplicated names in j of X[Y, j] merges

Suppose I have data like this: set.seed(1) DT <- data.table(id=rep(1:3,each=3),y=1997L+sample(1:9,9 ... or postfix that I should be using here? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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