Recent questions tagged R

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r - as.POSIXct gives an unexpected timezone

I'm trying to convert a yearmon date (from the zoo package) to a POSIXct in the UTC timezone. This ... like Grothendieck and Dwin suggested. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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571 views

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r - How do I take a rolling product using data.table

dt <- data.table(x=c(1, .9, .8, .75, .5, .1)) dt x 1: 1.00 2: 0.90 3: 0.80 4: 0.75 5: ... get the product of x for that row and the next n rows? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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396 views

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r - cast string directly to IDateTime

I am using the new version of data.table and especially the AWESOME fread function. My files contain dates that ... DT by this datetime column See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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694 views

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r - Longtable in a knitr (PDF) document: using xtable (or kable)

I am new to knitr and I have had some very basic latex knowledge in the past, so I googled already hoping ... small} %end{center} end{document} See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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540 views

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r - Unpacking and merging lists in a column in data.frame

I have the following data.frame: id name altNames 1001 Joan character(0) 1002 Jane c("Janie", "Janet", "Jan") ... ", "Will", character(0)) ) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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498 views

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r - How can I round a date to the quarter start/end?

I need to take a vector of dates and for each date get the first day of the next quarter. (Or rather, to ... to Q2 which ends on 31st August) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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480 views

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r - NA matches NA, but is not equal to NA. Why?

In R Language Definition, NA values are briefly described, a portion of which says ... In particular, FALSE & NA is ... (NA, NA) # [1] TRUE See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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r - How to preProcess features when some of them are factors?

My question is related to this one regarding categorical data (factors in R terms) when using the Caret package. I ... (etitanic, a) Thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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959 views

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r - If Column Contains String then enter value for that row

I have a dataframe that looks like this: A B ABC1 0 DEF2 4 DEG0 4 How do I transform this so that if a row ... ABC1 0 no DEF2 4 yes DEG0 4 yes See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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693 views

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r - Converting between matrix subscripts and linear indices (like ind2sub/sub2ind in matlab)

Let's say you have a matrix m <- matrix(1:25*2, nrow = 5, ncol=5) How do you go from matrix ... sub2ind Is there an equivalent way in R? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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393 views

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r - Disabling the cat command

Suppose I have the following function: ## Just an example f = function() { for(i in 1:10000) cat(i) return(1) ... when it's in a long for loop See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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511 views

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r - RCurl: HTTP Authentication When Site Responds With HTTP 401 Code Without WWW-Authenticate

I'm implementing an R wrapper around PiCloud's REST API using the RCurl package to make HTTP(S) requests to ... that I could look into using? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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696 views

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r - How do I manually set geom_bar fill color in ggplot

I'm trying to create several graphs using ggplot. The graphs are a series of bar graphs that together describe ... An example dataset is here. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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723 views

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r - Custom ggplot2 axis and label formatting

I'm trying to draw labels which look informative, clear and tidy. I was following example and raised one more question about ... (y="", x="") See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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416 views

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r - how to make a data frame into a simple features data frame?

I've got a table with place references and x and y coordinates in a given coordinate reference system. I ... larger simple features data frame. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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670 views

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r - dplyr . and _no visible binding for global variable '.'_ Note in package check

In dplyr one can write code like e.g. using the '.' to refer to the data in the pipe x <- data.frame ... the best practice to handle the NOTE? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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509 views

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r - How do I reset all options() arguments to their default values?

As noted in the title, I'm trying to understand how to reset all arguments in options() to their default ... ) settings and load them later. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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540 views

1 answer

r - Mathematical expression in axis label

In R, I use expression(theta[l]) so that the label of my plot axis is that same as $heta_l$ from LaTeX. ... there something more that I can do? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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473 views

1 answer

r - doParallel, cluster vs cores

What is the difference between cluster and cores in registerDoParallel when using doParallel package? Is my ... using stopCluster(). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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368 views

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r - How to save a data frame in a txt or excel file separated by columns

I have a question about saving data frames in txt or excel format. I have a data frame in R but when ... with all columns separated. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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599 views

1 answer

r - Using both color and size attributes in Hexagon Binning (ggplot2)

I am hoping to construct some charts to display the shooting tendencies/effectiveness of some NBA players and ... hexagons rather than circles? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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675 views

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r - command line arguments in bash to Rscript

I have a bash script that creates a csv file and an R file that creates graphs from that. At the end ... very hard to make sense of commandArgs See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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551 views

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r - Sending in Column Name to ddply from Function

I'd like to be able to send in a column name to a call that I am making to ddply. An example ... value as myColumnName to the calling function? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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714 views

1 answer

r - Plotly: add_trace in a loop

I'm trying to add_trace ad each loop, but I get only one plot with multiplies lines on over each other. mean <- -0 ... (p, y=W) } print(p) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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884 views

1 answer

r - Remove dots from column names

I have a dataframe with several columns and I want to remove the dots on the column name. The data is as ... do this for several data sets. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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691 views

1 answer

r - Delete rows based on multiple conditions with dplyr

I am trying to delete specific rows in my dataset based on values in multiple columns. A row should be deleted ... Thanks a lot for your help. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.5k views

1 answer

r - ggplot inserting space before degree symbol on axis label

I'd like to put a degree symbol on the x axis but the result has an extra space that I can't seem to ... x=xlab) Any help is appreciated! Ben See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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683 views

1 answer

r - ggplot2: Fix colors to factor levels

I'm working on a larger project for which I am creating several plots in ggplot2. The plots are concerned with ... geom_bar(stat = "identity") See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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