Recent questions tagged R

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r - regex match substring unless another substring matches

I'm trying to dig deeper into regexes and want to match a condition unless some substring is also found in the ... ignore.case=TRUE, perl=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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980 views

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r - Fill a vector with weekdays only

I know the start date start and the last date maturity. How can I fill in a vector with dates without taking ... 03-07" Same results... ? 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 - Geographical distance by group - Applying a function on each pair of rows

I want to calculate the average geographical distance between a number of houses per province. Suppose I have the ... an issue here, too. 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 - Add single quotes to a string

I try to add single quotes to a string but don't see how to do it. For instance I would like to replace ... do it. Any solution? Thanks, Vincent 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 - Shade background of a ggplot chart using geom_rect with categorical variables

This is my dataset example: df <- data.frame(group = rep(c("group1","group2","group3", "group4", " ... using the variable itself. Any idea? 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 - Rmarkdown not outputting results of system command to html file

I'm new to using Markdown, and have looked for a similar problem to this on SO without success. I'm ... be appreciated. Thanks. Cara Wilson 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 - Count number of unique rows based on two columns, by group

I have a data.table in r col1 col2 col3 col4 1: 5.1 3.5 1.4 setosa 2: 5.1 3.5 1.4 setosa 3: 4.7 ... can I do this in 1 data.table syntax only? See Question&Answers more detail:os...

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

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900 views

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r - Function that extracts each unique character in a string

Let's say that I have a string "rrkn". Is there a function in R that'll return a vector "r", "k", ... .e. each unique character in the 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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r - Annotate outside plot area once in ggplot with facets

I want to add an annotation outside the plotting area in a faceted ggplot. I can get the annotation that I ... get this to only appear once? 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 subtract first entry from last entry in grouped data

I would appreciate some help with the following task: From the data frame below (C), for each id I would ... Any help would be much appreciated. 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 - Adding expressions to facet labeller in ggplot 2 2.0

I need to replace one facet wrap label with a complicated expression. However, i cannot get the function ... Any help is appreciated. 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 - Rotate x-axis text when using coord_polar()

I have a scatter-plot with many values on a polar axis - coord_polar(). The resulting graph has crowded text ... (similar to the 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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r - How to remove rows where all columns are zero using dplyr pipe

I have the following data frame: dat <- structure(list(`A-XXX` = c(1.51653275922944, 0.077037240321129, 0), ` ... do it with dplyr's pipe style? 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 - Knitr does not render googleVis

I have a trouble with Rsutdio and knitr in Windows 7 for rendering a simple gvisTable. Here is my code ```{r ... .2 tools_3.1.2 yaml_2.1.13 See Question&Answers more detail:os...

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

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1.1k views

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r - Shiny page title and image

My UI code is the following: ui <- navbarPage( theme = shinytheme("paper"), title = div(img(src=" ... link to the site: BallerLab.us See Question&Answers more detail:os...

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

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1.0k views

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r - How can I create raster mosaic using list of rasters?

I need to create several raster mosaics. I'm using Package raster version 2.0-31 on a 64bits windows computer. ... " is missing, with no default See Question&Answers more detail:os...

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

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1.0k views

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r - setNames equivalent for colnames and rownames for use in pipe

I often use R's setNames function in a magrittr pipeline or elsewhere to fix the names of an object ... rownames? Something like setColnames? See Question&Answers more detail:os...

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

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1.0k views

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r - Remove constant columns with or without NAs

I am trying to get many lm models work in a function and I need to automatically drop constant columns from my ... still there ... Any 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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838 views

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r - functions not loaded from homebuilt package

I'm learning to build my own packages using RStudio. The current .tar.gz for the package (named SteenSubsSpec) ... How can I troubleshoot this? See Question&Answers more detail:os...

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

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989 views

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r - dplyr: whats the difference between group_by and group_by_ functions?

I can't figure out what the underscore-based function is for the group_by_() function. From the group_by help: ... the "regular" one? 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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841 views

1 answer

r - Why does x[NA] yield an NA vector the same length as x?

The code is like this x <- 1:5 x[NA] Why does it produce 5 NAs? 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

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r markdown - Restart Figure Numbering for Appendix / Supplementary Material in bookdown

I am writing an article for a journal that requires Supplementary Material. I was hoping to use a unique label such as ... *"} head(mtcars) ``` See Question&Answers more detail:os...

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

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883 views

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r - Using one data.frame to update another

Given 2 data frames that are identical in terms of column names/datatypes, where some columns uniquely identify the ... m using 2 id columns. See Question&Answers more detail:os...

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

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915 views

1 answer

r - Replace all values of a recursive list with values of a vector

Say, I have the following recursive list: rec_list <- list(list(rep(1,5), 10), list(rep(100, 4), ... keeping the original structure of the list? See Question&Answers more detail:os...

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

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1.0k views

1 answer

r - Find indices of multiple maximums in a vector

which.max Determines the location, i.e., index of the (first) minimum or maximum of a numeric vector. If the ... can I retrieve all of them? See Question&Answers more detail:os...

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

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1.6k views

1 answer

r - Change background color of tabPanel when it is active or hover over in Shiny

I have created an R Shiny app and I would like to change the background color of tabPanel when it is active ... appreciate your help on this. See Question&Answers more detail:os...

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

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967 views

1 answer

r - Error in nonlinear optimization problem : infinite or missing values in 'x'

I have to consider optimization problem in simulation study. An instance is given below: library(mvtnorm) library( ... please help. 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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1.1k views

1 answer

r - ggplotly not working properly when number are facets are more

I am trying to create a Shiny Dashboard which contains Plots also. Plotly is such a great a package that ... . Thanks in Advance. David See Question&Answers more detail:os...

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

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