Recent questions tagged R

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It looks like this question has may have been asked a few times before (here and here), but it has yet to be ... " for each document in "test"? See Question&Answers more detail:os...

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

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345 views

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r - Change the index number of a dataframe

After I'm done with some manipulation in Dataframe, I got a result dataframe. But the index are not listed properly as ... how I can get 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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594 views

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r - How can I drop unused levels from a data frame?

Given the following mock data: set.seed(123) x <- data.frame(let = sample(letters[1:5], 100, replace = T), num = sample( ... 1] "b" "c" "d" "e"? 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 - Select unique values with 'select' function in 'dplyr' library

Is it possible to select all unique values from a column of a data.frame using select function in dplyr library? ... " in SQL notation. 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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334 views

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r - How to install multiple packages?

How would I got about installing multiple packages in R? I tried the following code: install.packages("EIAdata" ... the multiple packages work? See Question&Answers more detail:os...

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

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680 views

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r - How to create weighted adjacency list/matrix from edge list?

My problem is very simple: I need to create an adjacency list/matrix from a list of edges. I have an edge list ... a 'graph object' Thank you! 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 - More efficient means of creating a corpus and DTM with 4M rows

My file has over 4M rows and I need a more efficient way of converting my data to a corpus and document term ... .org/web/packages/qdap/qdap.pdf 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 make object created within function usable outside

I created a function which produces a matrix as a result, but I can't figure out how to make the output ... not solve that. Thanks! Sergey 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 - Clustering list for hclust function

Using plot(hclust(dist(x))) method, I was able to draw a cluster tree map. It works. Yet I would like to ... belong to. How is this possible? See Question&Answers more detail:os...

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

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645 views

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r - How to combine row and column layout in flexdashboard?

For a new project I want to try the new flexdasboard package. I am thinking of a lay out in which the column ... way. Does anyone have an 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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377 views

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r - Reordering columns in a large dataframe

Using the following example dataframe: a <- c(1:5) b <- c("Cat", "Dog", "Rabbit", "Cat", "Dog") c ... ?). Many thanks in advance 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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362 views

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r - Figures captions and labels in knitr

I'm new to Knitr. I'm trying to make a report using r chunks, and I can't figure out how to use ... would appreciate if if someone can 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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481 views

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r - Hyperlinking text in a ggplot2 visualization

Currently if I want to show data in a table in R I can hyperlink text via markdown, html href, or LaTeX href. ... car)) + geom_point(size = 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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679 views

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r - How to convert entire dataframe to numeric while preserving decimals?

I have a mixed class dataframe (numeric and factor) where I am trying to convert the entire data frame to numeric ... column in a 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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408 views

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r - How to apply function over each matrix element's indices

I am wondering if there is a built-in function in R which applies a function to each element of the ... has matrix indices as parameters? See Question&Answers more detail:os...

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

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606 views

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r - error: --with-readline=yes (default) and headers/libs are not available

I am installing R. I am getting this error when runing ./configure : checking for history_truncate_file... no ... not available Any hint, 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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431 views

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r - Significance level added to matrix correlation heatmap using ggplot2

I wonder how one can add another layer of important and needed complexity to a matrix correlation heatmap like for ... better ideas, who knows? 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 - Circular Heatmap that looks like a donut

I'm trying to create circular heatmap with ggplot2 so I can use a larger number of labels around the circumference ... + coord_polar() plot(p) See Question&Answers more detail:os...

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

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627 views

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r - "un-register" a doParallel cluster

If I run foreach... %dopar% without registering a cluster, foreach raises a warning, and executes the code ... on the registered cluster? 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 - How to set use ggplot2 to map a raster

I would like to make a plot using R studio similar to the one below (created in Arc Map) I have tried the following ... 02-27 CRAN (R 3.1.0) See Question&Answers more detail:os...

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

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494 views

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r - dplyr summarise_each with na.rm

Is there a way to instruct dplyr to use summarise_each with na.rm=TRUE? I would like to take the mean ... specify it to ignore missing 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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395 views

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r - Why use c() to define vector?

c is not the abbreviation of vector in English, so why use c() to define a vector in R? v1<- c(1,2,3,4,5) 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 - Effectively debugging Shiny apps

I have a complex Shiny app spread across multiple files that uses code from several packages. The app works ... problems on Google Groups. See Question&Answers more detail:os...

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

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384 views

1 answer

r - Fast vectorized merge of list of data.frames by row

Most of the questions about merging data.frame in lists on SO don't quite relate to what I'm trying to get ... elapsed 11.296 0.016 11.365 See Question&Answers more detail:os...

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

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428 views

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r - How to set legend alpha with ggplot2

I have a graph of wind speeds against direction which has a huge numeber of points, and so am using alpha=I( ... instead? Here is an 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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470 views

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r - Comparing gather (tidyr) to melt (reshape2)

I love the reshape2 package because it made life so doggone easy. Typically Hadley has made improvements in his ... 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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491 views

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r - use %>% with replacement functions like colnames()<-

How can I use the pipe operator to pipe into replacement function like colnames()<- ? Here's what I ... : Chaining arithmetic operators in dplyr See Question&Answers more detail:os...

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

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400 views

1 answer

r - Move a column to first position in a data frame

I would like to have the last column of the data frame moved to the start (as first column). How can I do it ... and "move it to the start". See Question&Answers more detail:os...

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

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