Recent questions tagged R

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r - Saving a data frame as a binary file

I would like to save a whole bunch of relatively large data frames while minimizing the space that the files take up. ... "))) ##do stuff here } See Question&Answers more detail:os...

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

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534 views

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r - Subset data based on partial match of column names

I need to subset a df to include certain strings. Some of these are full column names, and the following works ... need grep to make this 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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661 views

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r - What does the double percentage sign (%%) mean?

What is the double percent (%%) used for in R? From using it, it looks as if it divides the number in ... curiosity, when would this be useful? See Question&Answers more detail:os...

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

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559 views

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r - Setting hex bins in ggplot2 to same size

I'm trying to make a hexbin representation of data in several categories. The problem is, facetting these bins ... physically the same size? See Question&Answers more detail:os...

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

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662 views

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r - Collapse consecutive runs of numbers to a string of ranges

Let's say I have the following vector of numbers: vec = c(1, 2, 3, 5, 7, 8, 9, 10, 11, 12) I'm looking for ... 5, 7-12" How can I do this in R? 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 - Error in unserialize(socklist[[n]]) : error reading from connection on Unix

I have tried running the following code on a Unix machine with 20 CPU, using R foreach, parallel, ... varimp function on parallel CPUs? See Question&Answers more detail:os...

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

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668 views

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r - Extracting Nouns and Verbs from Text

I was wondering if it is possible to extract nouns, verbs separately in R package openNLP? I use the the ... to extract verbs, nouns separately. 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 - Get the last row of a previous group in data.table

This is what my data table looks like: library(data.table) dt <- fread(' Product Group LastProductOfPriorGroup A 1 NA ... Group,1)] to no avail. See Question&Answers more detail:os...

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

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1.3k views

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r - Multiple colors in a facet STRIP background

I would like to modify the colors of the facet background based on the group. I'm not sure if this is even ... based on variable in data set) See Question&Answers more detail:os...

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

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517 views

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r - non-joins with data.tables

I have a question on the data.table idiom for "non-joins", inspired from Iterator's question. Here is an ... j 4 Is this intended behavior? See Question&Answers more detail:os...

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

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613 views

1 answer

r - Different font faces and sizes within label text entries in ggplot2

I am building charts that have two lines in the axis text. The first line contains the group name, the ... very much appreciated. Cheers, Aaron See Question&Answers more detail:os...

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

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930 views

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r - Pretty axis labels for log scale in ggplot

When I try either of the following the axis scale is 1e+03, 1e+06, 1e+09 - is it possible to get nice superscripted 10 ... , 10^(1:10), log='y') See Question&Answers more detail:os...

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

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952 views

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r - Read FASTA into a dataframe and extract subsequences of FASTA file

I have a small fasta file of DNA sequences which looks like this: >NM_000016 700 200 234 ... 3 5 #"TTC" See Question&Answers more detail:os...

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

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709 views

1 answer

r - ddply multiple quantiles by group

how can I do this calculation: library(ddply) quantile(baseball$ab) 0% 25% 50% 75% 100% 0 25 131 435 705 by groups, say ... 89.0 89.0 89.00 89 See Question&Answers more detail:os...

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

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425 views

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r - Find and break on repeated runs

I have a vector with repeating patterns within it. I want to break any where the repeating pattern of n length ... use but don't see how. See Question&Answers more detail:os...

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

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651 views

1 answer

r - Remove geom(s) from an existing ggplot chart?

I am trying to understand how I can make changes to the internals of a ggplot2 chart. I started reading the ... to keep the exact same layout? See Question&Answers more detail:os...

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

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805 views

1 answer

r - Keyboard shortcut for inserting roxygen #' comment start

This question might be over-answered but I could not find one. Basically I am using RStudio and the keyboard shortcut ... cmd + shift + c? See Question&Answers more detail:os...

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

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751 views

1 answer

r - Handling Latex backslashes in xtable

I have a table that includes the following column: mytable <- data.frame(beta_0 = c(1,2,3) What I want ... end{tabular} end{center} end{table} See Question&Answers more detail:os...

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

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502 views

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r - Append/Combine Shape Files

I have a very simple operation I would like to perform: combining two shape files. Specifically, I have census ... Thank you for your time. 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 - Math mode in shiny table

Using withMathJax, I would like to render a table with rownames with some math expressions. Here is a basic example ... ) } shinyApp(ui, server) See Question&Answers more detail:os...

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

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923 views

1 answer

r - Control the fill order and groups for a ggplot2 geom_bar

library(ggplot2) data <- data.frame( group=factor(c("a","c","b","b","c","a")), x=c("A"," ... Note this may have resemblance to this SO question. 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

1 answer

r - convert utf8 code point strings like <U+0161> to utf8

I have a text file which contains some kind of fallback conversions of Unicode characters (the Unicode code points ... supported UTF-8 locale. 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

1 answer

r - When/how/where is parent.frame in a default argument interpreted?

Truth be told, I'm just being lazy here, but perhaps someone could someday profit from the answer being here. Say ... the same as it did before. See Question&Answers more detail:os...

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

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739 views

1 answer

r - How to use custom cross validation folds with XGBoost

I'm using the R wrapper for XGBoost. In the function xgb.cv, there is a folds parameter with the description list provides a ... ,3), c(4,5,6))? See Question&Answers more detail:os...

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

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840 views

1 answer

r - How to convert docx to PDF?

I want to ask if it is possible to convert text files such as word document or text document to PDF using R ... Is there any other solution ? See Question&Answers more detail:os...

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

0 votes

618 views

1 answer

r - ggplot2: Shape, Color and Linestyle into one legend

I want to create a ggplot2-diagram with lines and bars, visualizing different values y and ybar. The lines ... answer to this complex situation. See Question&Answers more detail:os...

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

0 votes

461 views

1 answer

r - Quickest way to read a subset of rows of a CSV

I have a 5GB csv with 2 million rows. The header are comma separated strings and each row are comma ... the rows. Just approximately 10%. See Question&Answers more detail:os...

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

0 votes

509 views

1 answer

r - Prevent selectInput from wrapping text

In a shiny app, is there a way to prevent the text of the dropdown in selectInput() from wrapping, as in ... , without making a huge sidebar. See Question&Answers more detail:os...

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

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