Recent questions tagged R

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r - How to align multiple ggplot2 plots and add shadows over all of them

Please download the data here! Target: Plot an image like this: Features: 1. two different time series; 2. the ... somebody here give me a hand? See Question&Answers more detail:os...

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

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373 views

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r - Calculate correlation with cor(), only for numerical columns

I have a dataframe and would like to calculate the correlation (with Spearman, data is categorical and ... Any suggestions are 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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r - Replacement for "rename" in dplyr

I like plyr's renaming function rename. I have recently started using dplyr, and was wondering if there is an easy ... use as to plyr's rename? 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 change line width in ggplot?

Datalink: the data used My code: ccfsisims <- read.csv(file = "F:/Purdue University/RA_Position/ ... line width. best, ismail 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 use the 'sweep' function

When I look at the source of R Packages, i see the function sweep used quite often. Sometimes it's used when a ... use sweep in their own code. 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 - Advantages of reactive vs. observe vs. observeEvent

I've reading everything I can about shiny reactive programming. I'm a bit confused. The following all work but what ... = ui, server = server) See Question&Answers more detail:os...

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

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395 views

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r - Determine the number of NA values in a column

I want to count the number of NA values in a data frame column. Say my data frame is called df, and the ... good/most efficient way to do 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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538 views

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r - Identifying points by color

I am following the tutorial over here : https://www.rpubs.com/loveb/som . This tutorial shows how to use the ... ,82,81,72 and 71? 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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r - Get all the rows with rownames starting with ABC111

We have the following data frame : col1 col2 col3 ABC111001 12 12 13 ABC111002 3 4 5 ABC000111 7 6 1 ABC000112 9 ... 12 12 13 ABC111002 3 4 5 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 get a warning on "shiny app will not work if the same output is used twice"

This is an old Shiny issue: shiny app will not work if the same "output" is used two times in Ui.R ... sharing your solutions on this issue! 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 - Convert many formats of date-time to one standard format

I am trying to do some simple operation in R, after loading a table i encountered a date column which has many ... help me to get this right! See Question&Answers more detail:os...

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

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711 views

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r - find multiple strings using str_extract_all

I have a list of strings as follows: tofind<-c("aaa","bbb","ccc","ddd") I also have a vector as follows: ... ) How do I get the expected output? 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 - Create binary column (0/1) based on condition in another column

I have a column of data in a data frame Ozone Solar.R Wind Temp Month Day 41 190 7.4 67 5 1 36 118 8 72 ... and use it to create a new column. See Question&Answers more detail:os...

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

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685 views

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r - Calculate total miles traveled from vectors of lat / lon

I have a data frame with data about a driver and the route they followed. I'm trying to figure out the total ... 40L), class = "data.frame") See Question&Answers more detail:os...

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

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627 views

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r - Delete entries with only one observation in a group

Here I would like to remove entries that have only one-entry for a given city by date. So for instance, I would ... Binded <- cbind(countx, DG) See Question&Answers more detail:os...

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

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662 views

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r - How to order my dataframe lexicographicaly

I have a following data frame a = data.frame(a=c(1,2,3,4,5,6,7),b=c(1,2,3,10,12,21,4),c=c(1,2,10,11,"X","Y ... 3 10 6 4 10 11 7 5 12 X 3 6 21 Y 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 - Save a ggplot2 time series plot grob generated by ggplotGrob

This post describes a method to create a two-line x-axis (year below months) on a time series plot. ... 2012, 2013 and 2014 omitted. See Question&Answers more detail:os...

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

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859 views

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r - Inputting NA where there are missing values when scraping with rvest

I want to use rvest to scrape a page which has titles and run times of talks at a recent conference and then ... an NA to show missing values? See Question&Answers more detail:os...

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

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626 views

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r - Changing binary variables to Yes/No

So I have a data frame that I'd like to analyze. The problem is that instead of Yes/No, there are a bunch ... that I am not thinking of 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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578 views

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r - How to perform pairwise operation like `%in%` and set operations for a list of vectors

This question is motived by How can I quickly see if any elements of multiple vectors are equal in R?, but not ... 't want to use combn(). See Question&Answers more detail:os...

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

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774 views

1 answer

r - GGplot custom scale transformation with custom ticks

I'm attempting to use a custom scale/axis transformation, like so: library(ggplot2) library(scales) dat <- ... using my custom tn afterwards. 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 - Shiny renderUI selectInput returned NULL

I am trying to use a reactivity model with one input affecting several outputs as describe in the shiny cheat sheet. I need ... ) str(A) }) })) See Question&Answers more detail:os...

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

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583 views

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r - Compute the minimum of a pair of vectors

If I have a vector c(1,2,3) and another vector of the same length c(1,4,1) . Is there some way ... looping through them would take a long 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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582 views

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r - Ridge regression with `glmnet` gives different coefficients than what I compute by "textbook definition"?

I am running Ridge regression with the use of glmnet R package. I noticed that the coefficients I obtain from glmnet:: ... .DEF, col = "red") See Question&Answers more detail:os...

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

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689 views

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r - Keyed lookup on data.table without 'with'

I have a data.table structure like so (except mine is really huge): dt <- data.table(x=1:5, y=3:7, ... column names in dt, to avoid conflicts. See Question&Answers more detail:os...

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

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936 views

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r - ggplot2, geom_bar, dodge, order of bars

I'd like to have ordered bars in dodge geom_bar. Do you know how to deal with it? My code: ttt <- data. ... have: What I would like to have: 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 - Does the term "vectorization" mean different things in different contexts?

Based on what I've read before, vectorization is a form of parallelization known as SIMD. It allows processors to ... why is that a plus? See Question&Answers more detail:os...

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

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574 views

1 answer

r - How to get a second bibliography?

In rmarkdown PDF and HTML I want two bibliographies—one for papers/books, and one for software I have used in ... explain how to do 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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