Recent questions tagged R

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r - Output a good-looking matrix using renderTable()

I am creating a matrix in my server. I would like to then output this matrix on the screen using renderTable(). (I ... 'c') matrix }) } ) ) See Question&Answers more detail:os...

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

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405 views

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r - grouped bar graph

I have the following data: bin groupname total_dist 0 rowA 377 0 rowA 306.6 0 rowB 2.1 0 rowB 110.6 ... that looks similar to this example: See Question&Answers more detail:os...

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

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320 views

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r - ggplot2 - highlighting selected points and strange behavior

I want to highlight selected points and encountered some strange behaviour. First some dummy data: a <- 1:50 b <- ... number of rows: 3, 31 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 - dplyr without hard-coding the variable names

Is it possible to use dplyr's mutate function without hard-coding the variable names? For example, the following code ... seem to help, either. See Question&Answers more detail:os...

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

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368 views

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r - Deleting every n-th row in a dataframe

How can I delete every n-th row from a dataframe in 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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335 views

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r - Two horizontal bar charts with shared axis in ggplot2 (similar to population pyramid)

I want to plot two variables on one plot similar to a population pyramid similar to this: This plot is ... Any advice or assistance 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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225 views

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r - How to plot a normal distribution by labeling specific parts of the x-axis?

I am using the following code to create a standard normal distribution in R: x <- seq(-4, 4, length=200) y ... mean. How can I add these labels? 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 - add image in title page of rmarkdown pdf

I am attempting to create an rmarkdown document. I have finally figured out a way to approach this, although it ... title that would be great. 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 - Delete a column in a data frame within a list

I made a list out of my dataframe, based on the factor levels in column A. In the list I would like to remove that ... Test 1 1 $B Test 1 3 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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331 views

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r - Row sums over columns with a certain pattern in their name

I have a data.table like this dput(DT) structure(list(ref = c(3L, 3L, 3L, 3L), nb = 12:15, i1 = c(3.1e- ... , .SDcols = grep("i", colnames(DT))] See Question&Answers more detail:os...

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

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587 views

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r - How to split an igraph into connected subgraphs?

I have an igraph with several disconnected components. For example: library(igraph) g <- simplify( graph.compose( ... of splitting the graph? See Question&Answers more detail:os...

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

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457 views

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r - how can I update a shiny fileInput object?

I want to create an input file dialog. This is straightforward using the fileInput function. shinyUI(pageWithSidebar( ... a thing) ... See Question&Answers more detail:os...

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

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394 views

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r - is there a way to extend LETTERS past 26 characters e.g., AA, AB, AC...?

I use LETTERS most of the time for my factors but today I tried to go beyond 26 characters: LETTERS[1: ... m looking for using another 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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328 views

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r - How to remove rows of a matrix by row name, rather than numerical index?

I have matrix g: > g[1:5,1:5] rs7510853 rs10154488 rs12159982 rs2844887 rs2844888 NA06985 "CC" "CC" "CC" "CC" " ... of rows that I have ID-d. See Question&Answers more detail:os...

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

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540 views

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r - Setting work directory in knitr using opts_chunk$set(root.dir = ...) doesn't work

My R project is structured like a package with directories /R, /vignettes, /data etc. In one of my Rmd ... the question. Thanks 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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298 views

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r - Combine Points with lines with ggplot2

I would like to plot a time series that look like this: what I plot with: qplot(Jahr, Wert, data=tu, ... suggestions? Thanks for y'all 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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505 views

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r - In RStudio/RMarkdown, how to setwd?

setwd in an Rmd file in RStudio does not appear to change the directory in subsequent chunks. Is there a ... once for all subsequent chunks. See Question&Answers more detail:os...

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

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287 views

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r - Append lines to a file

I'm new using R. I'm trying to add (append) new lines to a file with my existing data in R. The ... resulting file contains only the line added. See Question&Answers more detail:os...

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

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365 views

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r - Text-mining with the tm-package - word stemming

I am doing some text mining in R with the tm-package. Everything works very smooth. However, one problem ... corpus.copy) inspect(corpus.final) See Question&Answers more detail:os...

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

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364 views

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r - How to produce a heatmap with ggplot2?

I am trying to produce a heat map using ggplot2. I found this example, which I am essentially trying to replicate ... in R 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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568 views

1 answer

r - devtools::install_github() - Ignore SSL cert verification failure

I'm trying to get devtools::install_github() working behind my corporate proxy on Windows 7. So far I've ... and proceed with the installation? See Question&Answers more detail:os...

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

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364 views

1 answer

r - How can I pass multiple arguments to a function as a single vector?

I created the following function with six args: nDone <- function(under,strike,ttoe,vol,rf,dy) { pnorm(((log( ... doing wrong and how to fix? See Question&Answers more detail:os...

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

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367 views

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r - ggplot2 for grayscale printouts

ggplot2 produces fancy graphs for screen/color prints, but the gray background and the colors interfere when ... to distinguish the groups. See Question&Answers more detail:os...

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

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365 views

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r - Create new column based on 4 values in another column

I want to create a new column based on 4 values in another column. if col1=1 then col2= G; if col1=2 ... but none seems to be working. 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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602 views

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r - Asymmetric expansion of ggplot axis limits

How do you adjust the expansion of limits asymmetrically in ggplot? For example, library(ggplot2) ggplot(mtcars) + geom_bar( ... cyl, y = 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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386 views

1 answer

r - What's the difference between identical(x, y) and isTRUE(all.equal(x, y))?

Is there any difference between testing isTRUE(all.equal(x, y)) and identical(x, y)? The help page says: ... which of the two is appropriate? See Question&Answers more detail:os...

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

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321 views

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r - Plotting a "sequence logo" using ggplot2?

Is it (reasonably) possible to plot a sequence logo plot using ggplot2? There is a package to do it which is ... ggplot2 version of it. 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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343 views

1 answer

r - Find names of columns which contain missing values

I want to find all the names of columns with NA or missing data and store these column names in a vector. ... output. Any help is 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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