Recent questions tagged R

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r - Smart way to chain ifelse statements?

When I have to chain ifelse statements, it looks like: ifelse(input=="x","x1", ifelse(input=="y","x2", ... just to make the code look 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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247 views

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r - if {...} else {...} : Does the line break between "}" and "else" really matters?

I write my if {...} else {...} statement in R in the following way as I find it more readable. ... going on here? Thanks for your help. See Question&Answers more detail:os...

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

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562 views

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r - rowSums but keeping NA values

I am pretty sure this is quite simple, but seem to have got stuck...I have two xts vectors that have ... getting NAs in the relevant places? 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 - Sample by group using the sample_n function of dplyr

According to the dplyr help file the sample_n function samples a fixed number per group. When I run the ... to achieve this using dplyr? See Question&Answers more detail:os...

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

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548 views

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r - trimws bug? leading whitespace not removed

Edit: Thanks to R Yoda, I was finally able to create a reproducible example to the issue I am facing: x = ... same as Encoding(" 11.132592")) See Question&Answers more detail:os...

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

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464 views

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r - Data table error could not find function "."

I am trying to run the following piece of code. Whenever I try to run the code I get the following error: Error in ... .6.2 [8] tools_3.1.2 See Question&Answers more detail:os...

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

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642 views

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r - Add text outside plot area

Sample code library(ggplot2) ggplot(mtcars, aes(mpg, cyl, color = vs)) + geom_line() How if it is possible ... I wrote on it "arbitrary words" 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 can I pad a vector with NA from the front?

I want to make an existing vector size n and use NA. I know I can pad at the end of the vector like so: v1 <- 1:10 ... NA 1 2 3 4 5 6 7 8 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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428 views

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r - data.table := assignments when variable has same name as a column

I found this strange behavior when assigning a value to a position. If the variable has the same name as a ... could not find 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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r - How do I convert a wide dataframe to a long dataframe for a multilevel structure with 'quadruple nesting'?

I conducted a study that, in retrospect (one lives, one learns :-)) appears to generate multilevel data. Now ... pointers anybody can give!!! See Question&Answers more detail:os...

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

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333 views

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r - Rotate a ggplot2 plot object

I would like to rotate a complete ggplot object 90°. I do not wish to use coord_flip as this appears to ... would likely need to use gridExtra. See Question&Answers more detail:os...

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

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335 views

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r - Download.file fails in RStudio

file<-tempfile(fileext=".csv") download.file(url="ftp://pubftp.spp.org/Markets/DA/LMP_By_SETTLEMENT_LOC/2014/03/28 ... know what the problem is. See Question&Answers more detail:os...

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

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471 views

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r - How can I use functions returning vectors (like fivenum) with ddply or aggregate?

I would like to split my data frame using a couple of columns and call let's say fivenum on each group. aggregate( ... Max = max(Petal.Width) ) 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 - Converting two columns of date and time data to one

I have a simple data frame: D <- c("2012/12/14", "2012/12/14") Time <- c("18:40:37", "18:40:48" ... year, time. How would I go about doing 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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319 views

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r - split character columns and get names of field in string

I need to split a column that contains information into several columns. I'd use tstrsplit but the same kind of ... go with a dplyr/tidyr way) See Question&Answers more detail:os...

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

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568 views

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r - Why does plot not respect add = TRUE?

Why does R's base plot function do this? We have to use points or lines, which needs special code rather ... /r-devel/2008-March/048650.html 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 - Tidy data.frame with repeated column names

I have a program that gives me data in this format toy file_path Condition Trial.Num A B C ID A B C ID A B C ID ... ", row.names = c(NA, -15L)) See Question&Answers more detail:os...

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

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276 views

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r - Plot title at bottom of plot using ggplot2

In ggplot2, how to put the plot title at the bottom of the plot. qplot(rnorm(100)) + ggtitle("My Title") ... at middle and bottom of the plot. See Question&Answers more detail:os...

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

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1.1k views

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r - How to underline text in a plot title or label? (ggplot2)

Please pardon my ignorance if this is a simple question, but I can't seem to figure out how to underline any ... workaround, but it didn't help See Question&Answers more detail:os...

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

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310 views

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r - How to adapt a LaTex beamer theme to apply it in an rmarkdown::beamer_presentation

I would like to apply a LaTex beamer theme in an rmarkdown::beamer_presentation. The custom themes contains a ... 3mm} } mode<all> See Question&Answers more detail:os...

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

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304 views

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r - how to insert missing observations on a data frame

I have a data that are observations over time. Unfortunately, some large gaps of time points are missing on a ... edits made it clear. :) See Question&Answers more detail:os...

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

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502 views

1 answer

r - Coerce logical (boolean) vector to 0 and 1

I have a numeric vector: a <- 1:4 # [1] 1 2 3 4 Check if values in 'a' is larger than 2: a > 2 ... = FALSE] <- 0 Are there any simpler methods? See Question&Answers more detail:os...

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

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670 views

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r - Group rows in data frame based on time difference between consecutive rows

I have a data frame of this type YEAR MONTH DAY HOUR LON LAT 1860 10 3 13 -19.50 3.00 1860 ... properly according to the criteria stated above. See Question&Answers more detail:os...

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

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342 views

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r - Replacing missing data in vector with existing data

I have a vector (I actually just retrieved individual columns from a dataframe) which has missing data in it. I ... temp[filledData[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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704 views

1 answer

r - ggplot2: Problem with x axis when adding regression line equation on each facet

Based on the example here Adding Regression Line Equation and R2 on graph, I am struggling to ... .github.com/kdauria/524eade46135f6348140 See Question&Answers more detail:os...

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

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407 views

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r - purrr:map and glm - issues with call

This issue is related to Pipe '.' dot causes trouble in glm call. purrr:map is wonderful for subgroup analysis ... should be fixed in base R. 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

1 answer

r - Making Multiple Style References In Google Maps API

I cannot figure out how to make multiple style references in one ggmap() query from the Google Maps API ... questions or need any clarification! See Question&Answers more detail:os...

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

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502 views

1 answer

r - Combine/merge columns while avoiding NA?

I have a really simple problem but haven't been able to find a solution. I am hoping someone can help. I ... big dataframe, i'd appreciate 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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