Recent questions tagged R

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r - How to store filter expressions as strings?

For the analysis of a species database, I often need to change lots of criteria, depending on the projects ... etc to perform my filtering? See Question&Answers more detail:os...

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

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507 views

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r - Simulate an AR(1) process with uniform innovations

I need to plot an AR(1) graph for the process y[k] = 0.75 * y[k-1] + e[k] for y0 = 1. Assume that ... what parameters do I change if y[0] = 10? See Question&Answers more detail:os...

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

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526 views

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r - Object not found error with ggplot2 when adding shape aesthetic

I am attempting to add a shape aesthetic mapping to an existing plot but am receiving the error below. Is there ... Grp2 1.077799 2.071429 14882 See Question&Answers more detail:os...

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

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486 views

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r - How do I place an identical smooth on each facet of a ggplot2 object?

Here's an example: eg <- data.frame(x = c(1:50, 50:1), y = c(1:50, 1:50) + rnorm(100), g ... (data = my.data) Thanks for any help! Andrew See Question&Answers more detail:os...

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

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569 views

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r - ggplot does not show legend in geom_histogram

I have this code ggplot() + geom_histogram(aes(x=V1, y=(..count..)/sum(..count..)), fill="red", alpha=.4 ... How can I put a legend in my graph? See Question&Answers more detail:os...

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

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477 views

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r - Color bar missing in ggplot legend, Windows Remote Desktop

I'm running R version 3.0.1 and ggplot2 version 0.9.3.1 on a Windows machine and getting aberrant behavior ... what's going on here? 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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514 views

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r - annotation_custom with npc coordinates in ggplot2

I would like to draw a box at the bottom of each panel, where each panel may have different y-ranges. The box should ... "),ymax=unit(1,"npc") ) See Question&Answers more detail:os...

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

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382 views

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r - Error: Could not find build tools necessary to build dplyr

I'm trying to install dplyr from its repository, but I getting the following error. I'm using MBP with ... /usr/local/lib/libreadline.a' See Question&Answers more detail:os...

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

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856 views

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r - wordcloud package: get “Error in strwidth(…) : invalid 'cex' value”

I am using the tm and wordcloud packages in R 2.15.1. I am trying to make a word cloud Here is the code: ... ) : invalid 'cex' value please 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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300 views

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r - shiny Error in match.arg(position) : 'arg' must be NULL or a character vector

I went into an error when running my shiny app. The error seems in ui.R but I have checked so many times ... must be NULL or a character 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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341 views

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r - How to modify unexported object in a package

My package (let's call it A) depends on another package B. I need to modify a function f in B that has a ... "C_rf" Is it possible to modify f? See Question&Answers more detail:os...

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

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536 views

1 answer

r - What is the equivalent of mutate_at (dplyr) in data.table?

I am trying to move some of my slower processes in dplyr to using data.table, however can not seem to find an efficient ... = T))) %>% ungroup() See Question&Answers more detail:os...

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

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590 views

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r - Get value of last non-NA row per column in data.table

I have a datatable where each column represents a time series, and I want to grab the last NA value per time ... per row rather than per 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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459 views

1 answer

r - stringr extract full number from string

From ?stringr::str_extract, I tried library(stringr) str_extract("number 123", "\d") # [1] "1" but I'd like the full ... )[[1]][2]) # [1] 123 See Question&Answers more detail:os...

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

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513 views

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r - Change Date print format from yyyy-mm-dd to dd-mm-yyyy

I am trying to convert the format of the dates from yyyy-mm-dd to dd-mm-yyyy format. For example: D <- "06.12 ... I convert it to "06-12-2012"? See Question&Answers more detail:os...

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

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251 views

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r - How to add new calculated variables to a data frame

I would like to create a loop that will add now variables to the data frame.Those variables should be the simple quadratic ... 49 3 8 4 9 64 16 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

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r - Pivot wider produces nested object

This is regarding latest tidyr release. I am trying pivot_wider & pivot_longer function from library(tidyr) (Update 1. ... of what went wrong. See Question&Answers more detail:os...

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

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417 views

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r - Convert month's number to Month name

I need to convert this integer vector which contains the number of months in the year to month's name. for ... Thank you for your suggestions! See Question&Answers more detail:os...

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

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521 views

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r - Character "|" in strsplit function (vertical bar / pipe)

I was curious about: > strsplit("ty,rr", split = ",") [[1]] [1] "ty" "rr" > strsplit("ty|rr", split = ... ") from strsplit("ty|rr", split="|")? See Question&Answers more detail:os...

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

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493 views

1 answer

r - ggplot2: connecting points in polar coordinates with a straight line

I have a plot in polar coordinates. I used geom_path to connect the points, but I'd like the paths to ... () I appreciate any suggestions. See Question&Answers more detail:os...

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

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284 views

1 answer

r - How can one mix 2 or more color palettes to show a combined color value

I'm trying to create a plot where color represents the combination of several values. In the example below, I am ... step? Thanks 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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350 views

1 answer

r - Error : Could not find build tools necessary to build

I installed Xcode on my Mac, running on the El Capitan version 10.11. I need to get files from a github ... 0 Thread model: posix 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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353 views

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r - How can I get mean of every n rows and keep the date index?

I have a dataframe with a year index and a val index. I would like to create a mean of every n rows of val and ... 13:36, class = "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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520 views

1 answer

r - scale by group in data.table

I would like to scale a selection of variables in data.table by group "session": session score1 score2 1: 1 0. ... ). What am I doing wrong? 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

1 answer

r - Replace column values with column name using dplyr's transmute_all

Data set contains many columns containing values which are either NA or 1, kind of like this: > data_frame(a = ... first element will be used > See Question&Answers more detail:os...

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

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781 views

1 answer

r - How to create a binary vector with 1 if elements are part of the same vector?

I would like to create a so-called matching vector consisting of binaries. All numbers should be zero unless ... understand what I wanna 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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1.2k views

1 answer

r - Recode multiple columns using dplyr

I had a dataframe where I recoded several columns so that 999 was set to NA dfB <-dfA %>% mutate(adhere = if_else( ... 4 3 NA FALSE 5 4 NA 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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370 views

1 answer

r - How to shift x axis positions of two geoms relative to each other

I have a ggplot plot. I need to shift error bars relative to jittered points. My code is: data("cabbages", ... And I need something like 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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