Recent questions tagged R

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r - geom_text how to position the text on bar as I want?

I would like to adjust the text on the barplot. I tried to adjust hjust/vjust to display as I like ... without overlapping like the last parts. 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: lead() and lag() wrong when used with group_by()

I want to find the lead() and lag() element in each group, but had some wrong results. For example, data ... not just about the order)? 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 - Code chunk font size in Rmarkdown with knitr and latex

In knitr, the size option works fine in a .Rnw file, the following code generates: documentclass{article} egin{ ... and rmarkdown 0.2.68. 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 test if list element exists?

Problem I would like to test if an element of a list exists, here is an example foo <- list(a=1) exists( ... with(...) the preferred approach? 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 - Plotting pca biplot with ggplot2

I wonder if it is possible to plot pca biplot results with ggplot2. Suppose if I want to display the ... will be highly appreciated. 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 - Extract prediction band from lme fit

I have following model x <- rep(seq(0, 100, by=1), 10) y <- 15 + 2*rnorm(1010, 10, 4)*x ... bands from the nlme object for the whole population? 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 hold figure position with figure caption in pdf output of knitr?

I am using knitr (1.9.5 and 1.9.17) and rmarkdown (0.5.3.1), and would like to hold figure position in the ... ="H"} plot(cars) ``` More test 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 a dataframe to a vector (by rows)

I have a dataframe with numeric entries like this one test <- data.frame(x = c(26, 21, 20), y = c(34, 29, 28)) ... { X <- cbind(X, test[i, ]) } 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 - Moving columns within a data.frame() without retyping

Is there a method for moving a column from one position in a data.frame to the next - without typing an ... way? (Imagine 1500+ columns) 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 faq - How to get help in R?

What is the possible documentation available for R package? For example I try to understand sp package. In ... through help and documentation? 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 - Venn diagram proportional and color shading with semi-transparency

I have following type of count data. A 450 B 1800 A and B both 230 I want to develop a colorful (possibly semi ... , and it is not to scale. 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 add ewpage in Rmarkdown in a smart way?

I wonder if one could simply use LaTeX ewpage command in R markdown v2 in a different way than this: ```{ ... : true keep_tex: true --- 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 - promise already under evaluation: recursive default argument reference or earlier problems?

Here is my R code. The functions are defined as: f <- function(x, T) { 10 * sin(0.3 * x) * ... practice or it may cause some potential trouble? 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 - Return data subset time frames within another timeframes?

There are very nifty ways of subsetting xts objects. For example, one can get all the data for all years ... any other subsetting tricks exist? 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 - Can dplyr join on multiple columns or composite key?

I realize that dplyr v3.0 allows you to join on different variables: left_join(x, y, by = c("a" = "b") will match x.a ... x.c] to [y.b and y.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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r - Stepwise regression using p-values to drop variables with nonsignificant p-values

I want to perform a stepwise linear Regression using p-values as a selection criterion, e.g.: at each ... already implemented version of 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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r - Remove grid, background color, and top and right borders from ggplot2

I would like to reproduce the plot immediately below by using ggplot2. I can come close, but cannot remove ... panel.border = theme_L_border()) 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 - Center Plot title in ggplot2

This simple code (and all my scripts from this morning) has started giving me an off center title in ggplot2: ... "Average bill for 2 people") 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 - What's the difference between lapply and do.call?

I'm learning R recently and confused by two function: lapplyand do.call. It seems that they're just similar to ... use a function called map? 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 - merge data.frames based on year and fill in missing values

I have two data.frames that I want to merge together. The first is: datess <- seq(as.Date('2005-01-01'), as. ... 1 {cont} 2009-12-31 thanks 2 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 faq - Display exact value of a variable in R

> x <- 1.00042589212565 > x [1] 1.000426 If I wanted to print the exact value of x, how would I do it ... how to round. Thank you 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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r - Exactly storing large integers

In R software a <- 123456789123456789123456789 sprintf("%27f",a) #[1] "123456789123456791337762816.000000" I got the ... the wrong value of 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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r - Dynamically add column names to data.table when aggregating

I know we can dynamically add column names when creating columns by reference (using :=), as described e.g. here: ... "test_dtb[ , list((m) = 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 - ggplot2 - adding secondary y-axis on top of a plot

For a publication I need to add a second y-axis to an existing plot. I've come across a means of how to do ... it grid.newpage() grid.draw(g1) 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 - Change values in multiple columns of a dataframe using a lookup table

I am trying to change the value of a number of columns at once using a lookup table. They all use the ... solve things. Thank you 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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1.6k views

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r - Using get() with replacement functions

Can anyone explain to me why the following example occurs? #Create simple dataframe assign( "df" , data.frame( P ... ) of those objects. 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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1.6k views

1 answer

r - Long Numbers As A Character String

As part of my dataset, one of the columns is a series of 24-digit numbers. Example: bigonumber <- ... to dictate that to them.) See Question&Answers more detail:os...

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

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1.7k views

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r - How to determine if date is a weekend or not (not using lubridate)

I have a vector of date objects (yyyy-mm-dd) and I want to determine if any of them are on weekend or not. Is there ... ::wday(x) %in% c(1, 7)] See Question&Answers more detail:os...

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

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