Recent questions tagged R

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I would like to extract date from the following list of text: [[1]] [1] "TAX INVOICE 28 Dec 2018 PO2222" [[ ... : 28-Dec-2018 20-Nov-2018 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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r - Weird as.POSIXct behavior depending on daylight savings time

It seems there is a bug in as.POSIXct. Or what is going on? as.POSIXct("27/03/2006 02:05:38", format="%d/ ... 2006 happened as far as I know... 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 - Using group_by with difftime

I've created a dataframe with data : idCol <- c('1','1','2','2') stepCol <- c('step1' , 'step2' , ... object of class "c('double', 'numeric')" See Question&Answers more detail:os...

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

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427 views

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r - Display different time elements at different speeds in gganimate

Using the code from this answer, How to make dots in gganimate appear and not transition, as a MWE, say we have ... ..., Month 9 very slowly. See Question&Answers more detail:os...

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

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337 views

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r - Dplyr write a function with column names as inputs

I'm writing a function that I'm going to use on multiple columns in dplyr, but I'm having trouble passing ... supposed to be passing to eval. See Question&Answers more detail:os...

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

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570 views

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r - Unexpected date when converting POSIXct date-time to Date - timezone issue?

When I try to coerce a POSIXct date-time to a Date using as.Date, it seems to return wrong date. I suspect ... what may be going wrong 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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r - Stats on every n rows for each column

I would like to calculate the mean and standard deviation for every nth (in my case every 6) rows (or samples). ... of the number of rows [6] 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 place legends at different sides of plot (bottom and right side) with ggplot2?

I'm trying to get a plot with two legends, one at the bottom and the other at the right side of the plot ... (legend should be outside of plot): See Question&Answers more detail:os...

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

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385 views

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r - Ordering bars in barplot()

I have a dataframe, and one of the variables (let's call it Q1) has several levels: "No use", "30 min", "1 ... it doesn't give me what I need. See Question&Answers more detail:os...

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

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442 views

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r - Display selected folder path in Shiny

I want my Shiny app to allow user specify a path to a folder (locally) and display the selected path. ... : R conditionalPanel reacts to output See Question&Answers more detail:os...

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

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399 views

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r - multicolor text on chart

Greetings, I need to display multicolor text on my chart for example early <- 30 ontime <- 70 late <- 25 txt ... -r.html Thank you 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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463 views

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r - Calculate row means based on (partial) matching column names

I am starting with 3 large data tables (named A1,A2,A3). Each table has 4 data columns (V1-V4), 1 " ... partial match in the column name? 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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r - Filtering multiple columns with str_detect

I'm utilizing the function str_detect from tidyverse to filter out rows of a data frame that match the start of ... Jill Jockey 3 Joe Jobhunter) See Question&Answers more detail:os...

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

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344 views

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r - Accessing functions with a dot in their name (eg. "as.vector") using rpy2

I am trying to access the "as.vector" R function from within Python, using rpy2. Let's say, for the sake ... asvector" to no avail. Any ideas? See Question&Answers more detail:os...

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

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407 views

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r - Fibonacci function

We have been given a task, which we just can't figure out: Write an R function which will generate a ... to generate the wanted 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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508 views

1 answer

r - Repeat vector to fill down column in data frame

Seems like this very simple maneuver used to work for me, and now it simply doesn't. A dummy version of the ... want to. What am I missing? See Question&Answers more detail:os...

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

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947 views

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r - Population pyramid plot with ggplot2 and dplyr (instead of plyr)

I am trying to reproduce the simple population pyramid from the post Simpler population pyramid in ggplot2 using ... by aes or aes_string See Question&Answers more detail:os...

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

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377 views

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r - Highlight a single "bar" in ggplot

i'd like to choose colors and fill patterns for individual bars in a bar graph (Highlight a single "bar") The ... but it still doesn't work. See Question&Answers more detail:os...

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

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266 views

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r - Add a series of elements in different locations within a vector

I aim to insert multiple elements to a vector each in different locations. This is the example followed by a ... multiple locations in a vector. See Question&Answers more detail:os...

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

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270 views

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r - How to automate nested sections in Rmds which include text, maps and tables

I found several examples (How to extract the content of SQL-Files using R, Use loop to generate section of text in ... 5.1 xfun_0.7 yaml_2.1.19 See Question&Answers more detail:os...

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

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409 views

1 answer

r - Mapping variable to hexagon size with geom_hex

Does anyone know if its possible to map to hexagon size with ggplot? Size is listed as an argument in the ... ) + geom_point() Any ideas? See Question&Answers more detail:os...

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

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313 views

1 answer

r - How to convert a numeric value into a Date value

So, I have a data.frame with a column called Date.birth, but I have these values in a numeric format: ... . Anyone has a suggestion? 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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338 views

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r - What does “Knit HTML” do in Rstudio 0.98?

I am trying to figure out what command and default options RStudio uses when pressing the "knit HTML" ... better anticipate their behavior. See Question&Answers more detail:os...

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

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450 views

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r - Using lubridate and ggplot2 effectively for date axis

Consider this example: library(ggplot2) library(lubridate) set.seed(4) date <- seq(from = as.POSIXct("2012- ... or facet_grid for this example). See Question&Answers more detail:os...

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

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303 views

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r - get rows of unique values by group

I have a data.table and want to pick those lines of the data.table where some values of a variable x are unique relative to ... : b 2 5 5: b 1 6 See Question&Answers more detail:os...

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

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893 views

1 answer

r - Download .RData and .csv files from FTP using RCurl (or any other method)

I've uploaded a .RData file (created using save()) to an ftp server, and I'm trying to use getURL() ... current approach is based on this Post See Question&Answers more detail:os...

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

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333 views

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r - How do I plot charts with nested categories axes?

I'm plotting data which have both a category and a sub-category (see the example data below) and I'd like to ... look more like Excel's output? See Question&Answers more detail:os...

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

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404 views

1 answer

r - Extract time from timestamp?

Essentially, I want only the hour, minute, and seconds from a column of timestamps I have in R, because I ... if I can provide more information! See Question&Answers more detail:os...

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

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