Recent questions tagged R

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r - merging data.tables based on columns names

I am trying to do some left-join merges with data.tables. The package description quote that In all joins the ... merge and changing it back) See Question&Answers more detail:os...

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

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383 views

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r - ggplot set scale_color_gradientn manually

I have a data frame like this BP R2 LOG10 96162057 0.2118000 2.66514431 96162096 0.0124700 0.31749391 96162281 0. ... be cool, but not crucial. See Question&Answers more detail:os...

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

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446 views

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r - read.table reads "T" as TRUE and "F" as FALSE, how to avoid?

I have a file with the data c("A","T","B","F"). When I use: read.csv(myfile,header=F,stringsAsFactors= ... F as FALSE Am I doing anything 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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311 views

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r - doing t.test for columns for each row in data set

I have a set of data x which consists of 12 columns and 167 rows. The first column is compound ... 2265826 2942991 11690360 12552660 12102620 See Question&Answers more detail:os...

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

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649 views

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r - (Speed Challenge) Any faster method to calculate distance matrix between rows of two matrices, in terms of Euclidean distance?

First of all, this is NOT the problem of calculating Euclidean distance between two matrices. Assuming I have two ... 1.000000 1.000000 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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476 views

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r - Sexpr{} special LaTeX characters ($, &, %, # etc.) in .Rnw-file

It has something to do with the default inline hook, I realize that and I have tried getting at it (the ... the default inline hook for Sexpr? See Question&Answers more detail:os...

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

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401 views

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r - Vectorised Rcpp random binomial draws

This is a follow-on question from this one: Generating same random variable in Rcpp and R I'm trying to ... modified to implement this? 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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429 views

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r - Data.table - left outer join on multiple tables

Suppose you have data like fruits <- data.table(FruitID=c(1,2,3), Fruit=c("Apple", "Banana", "Strawberry") ... EDIT: Fixed a mistake in my data) See Question&Answers more detail:os...

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

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369 views

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r - ggplot2 one line per each row dataframe

I have a CSV file that contains the following data: user,Measurement1,Measurement2,Measurement3,group 1,0.1,0.7,0. ... user code as the x value. See Question&Answers more detail:os...

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

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935 views

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r - Add colored arrow to axis of ggplot2 (partially outside plot region)

I'd like to add a colored arrow (full length of the axis) to show time moving a in a direction (this can be ... 6,"cm"))) Giving But I want See Question&Answers more detail:os...

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

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464 views

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r - how can xtable do cell coloring

I have this table in a .RMD file and I would like to render in PDF with conditional formatting. Currently I am using ... "brown" >.8 = "white" See Question&Answers more detail:os...

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

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481 views

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r - How to add axis text in this negative and positive bars differently using ggplot2?

I've drawed bar graph with negative and positive bars which is familiar to the research. However, my code seems extremely ... (15,15)) dev.off() See Question&Answers more detail:os...

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

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466 views

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r - How to increase smoothness of spheres3d in rgl

When I use rgl::spheres3d(), the rendered spheres have clunky facetted edges. spheres = data.frame(x = c( ... with which they are drawn? See Question&Answers more detail:os...

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

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343 views

1 answer

r - How to speed up or vectorize a for loop?

I would like to increase the speed of my for loop via vectorization or using Data.table or something else. I have ... ): [1] tools_3.1.2 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 to create a hyperlink interactively in shiny app?

I am building a shiny app in which I want to create hyperlinks interactively. I know how to add a link to the ... an idea about how to do 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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476 views

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r - Extracting common character strings from multiple vectors of different lengths

Is there function in R to find the common characters in multiple vectors (of different lengths). For example, if I ... a better way to 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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270 views

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r - Get the vector of values from different columns of a matrix

I have a matrix 10x4, and I have a vector that has 10 elements. Each element is an column index of that ... can I access the specified elements? See Question&Answers more detail:os...

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

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890 views

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r - Reading Rdata file with different encoding

I have an .RData file to read on my Linux (UTF-8) machine, but I know the file is in Latin1 because I' ... when opened in an UTF-8 environment. See Question&Answers more detail:os...

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

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316 views

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r - Why does lm run out of memory while matrix multiplication works fine for coefficients?

I am trying to do fixed effects linear regression with R. My data looks like dte yr id v1 v2 . . ... the coefficients just fine? 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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363 views

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r - How can I get the min/max possible numeric?

Is there a function that returns the highest and lowest possible numeric values? See Question&Answers more detail:os...

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

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454 views

1 answer

r - Getting file path from Shiny UI (Not just directory) using browse button without uploading the file

I need to deal with a huge file (>500mb) in R. So instead of loading such heavy file in R environment, I ... choose, not file. Thank you guys! See Question&Answers more detail:os...

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

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440 views

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r - Creating zip file from folders

I am wondering if it is possible to create a zip file from folders. I have one folder and in this folders there ... Has someone a hint for me? See Question&Answers more detail:os...

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

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457 views

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r - Plotting implicit function

I'm trying to plot the following implicit formula in R: 1 = x^2 + 4*(y^2) + x*y which ... implicit formulas something else. Thanks in advance! See Question&Answers more detail:os...

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

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566 views

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r - remove certain legend variables and legend values from ggplot2?

suppose I'm plotting a dataframe in ggplot2 like: ggplot(iris) + geom_point(aes(x=Sepal.Width, y= ... exclude versicolor, virginica? 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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299 views

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r - Fill in data frame with values from rows above

Say I have a data frame like this: ID, ID_2, FIRST, VALUE ----------------------- 'a', 'aa', ... , but I am looking for a more efficient way. See Question&Answers more detail:os...

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

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389 views

1 answer

r - ggplot2 line plot order

I have a series of ordered points as shown below: However when I try to connect the points by a line, I ... line follow the ordering of points? 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 - Remove duplicate rows from xts object

I am having trouble deleting duplicated rows in an xts object. I have a R script that will download tick ... as the indicator of duplication? See Question&Answers more detail:os...

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

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324 views

1 answer

r - How to extract multiples of a number from a vector

I have a vector let's say x <- 1:1000 and I want to extract the multiples of 8 from it. What should I ... the multiples of 8 from the x 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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