Recent questions tagged R

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r - Transform only one axis to log10 scale with ggplot2

I have the following problem: I would like to visualize a discrete and a continuous variable on a boxplot in ... an unchanged y axis labels: See Question&Answers more detail:os...

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

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542 views

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r - Suggestions for speeding up Random Forests

I'm doing some work with the randomForest package and while it works well, it can be time-consuming. Any one have any ... 437.30 0.86 450.97 > See Question&Answers more detail:os...

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

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305 views

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r - Only download sources of a package and all dependencies

I am wondering if there's a way to use install.packages() or other related functions to do the following: only ... .tar.gz', repos = NULL) See Question&Answers more detail:os...

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

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474 views

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r - Apply a function to a subset of data.table columns, by column-indices instead of name

I'm trying to apply a function to a group of columns in a large data.table without referring to each one ... columns so it would be impractical) See Question&Answers more detail:os...

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

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426 views

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r - Non-redundant version of expand.grid

The R function expand.grid returns all possible combination between the elements of supplied parameters. e.g. > expand ... more than 2 inputs) See Question&Answers more detail:os...

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

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375 views

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r - group by two columns in ggplot2

Is it possible to group by two columns? So the cross product is drawn by geom_point() and geom_smooth()? As example ... a group, but not with 3. See Question&Answers more detail:os...

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

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330 views

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r - Check whether values in one data frame column exist in a second data frame

I have two data frames (A and B), both with a column 'C'. I want to check if values in column 'C' in data frame A ... data.frame(C = c(1,3,4,7)) See Question&Answers more detail:os...

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

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387 views

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r - How to add new column to an dataframe (to the front not end)?

How to add a new variable to an existing data frame, but I want to add to the front not end. eg. my dataframe is b c d ... 2 3 0 1 2 3 0 1 2 3 See Question&Answers more detail:os...

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

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373 views

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r - Select only rows if its value in a particular column is less than the value in the other column

I am using R and need to select rows with aged (age of death) less than or equal to laclen (lactation ... Any help would be appreciated! Bazon See Question&Answers more detail:os...

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

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566 views

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r - purrr map equivalent of nested for loop

What is the purrr::map equivalent of: for (i in 1:4) { for (j in 1:6) { print(paste(i, j, sep = "-")) } } ... print(paste(.x, ????, sep = "-"))) See Question&Answers more detail:os...

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

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698 views

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r - What is the difference between cat and print?

cat and print both seem to offer a "print" functionality in R. x <- 'Hello world! ' cat(x) # Hello world! ... cat, and when do I use print? See Question&Answers more detail:os...

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

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439 views

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r - Merge or combine by rownames

In the example below I have two datasets (Z and A). I want to merge or combine these sets by the ILMN numbers. ... ILMN_1653026 "0" "0" "0" GRA See Question&Answers more detail:os...

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

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500 views

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r - How can I document data sets with roxygen?

Is it possible to include .R files in the data directory of my package in the roxygen process? I ... files and perform some transformations. See Question&Answers more detail:os...

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

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747 views

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r - Library is not writable

I have this issue during package installation in R version 3.0.2 (2013-09-25) on an Ubuntu machine: install. ... not writable How to resolve it? See Question&Answers more detail:os...

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

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398 views

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r - How to group data.table by multiple columns?

I'm using the data.table package to speed up some summary statistic collection on a data set. I'm curious if ... but no luck. Any suggestions? See Question&Answers more detail:os...

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

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990 views

1 answer

r - How can I change XTS to data.frame and keep Index?

I have an XTS timeseries in R of the following format and am trying to do some processing, subsetting and re- ... properly? Thanks for any help. See Question&Answers more detail:os...

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

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548 views

1 answer

r - data.table row-wise sum, mean, min, max like dplyr?

There are other posts about row-wise operators on datatable. They are either too simple or solves a specific scenario My ... NaN Inf -Inf 0 4 See Question&Answers more detail:os...

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

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420 views

1 answer

r - Possible to show console messages (written with `message`) in a shiny ui?

I don't understand R's message vs cat vs print vs etc. too deeply, but I'm wondering if it's possible to ... Google group since I got 0 answers. See Question&Answers more detail:os...

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

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625 views

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r - best way to transpose data.table

[UPDATE: there is now a native transpose() function in data.table package] I often need to transpose a data.table, ... do it in "nicer" way? See Question&Answers more detail:os...

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

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427 views

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r - write.csv for large data.table

I have a data.table that is not very big (2 GB) but for some reason write.csv takes an extremely long time ... not seem to give memory back. See Question&Answers more detail:os...

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

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430 views

1 answer

r - Plot coordinates on map

I am trying to plot my coordinates using R. I have tried already to follow different post (R: Plot grouped ... sure why Hope someone can help See Question&Answers more detail:os...

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

0 votes

508 views

1 answer

r - Setting document title in Rmarkdown from parameters

I've got an Rmarkdown template that works well, and I've parameterized it so I can generate variants of the ... I should be trying? 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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519 views

1 answer

r - How to fix the aspect ratio in ggplot?

I'm trying to resize a plot to fit into my document, but I'm having difficulties getting the plotted diagram ... can I unsquash my diagrams? See Question&Answers more detail:os...

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

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481 views

1 answer

r - How to combine 2 plots (ggplot) into one plot?

By using R, is it possible to place 2 ggplot together (i.e., on the same plot)? I wish to show a ... one of them to something different): and See Question&Answers more detail:os...

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

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609 views

1 answer

r - adding x and y axis labels in ggplot2

How do I change the x and y labels on this graph please? library(Sleuth2) library(ggplot2) discharge<-ex1221new$Discharge ... , subtitle="n=41") See Question&Answers more detail:os...

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

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405 views

1 answer

r - Get all Parameters as List

Does R provide an object/function/method/keyword to get all function arguments? Using an example: function(a, b="default ... function(a, b, ...) See Question&Answers more detail:os...

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

0 votes

483 views

1 answer

r - How can I manipulate the strip text of facet_grid plots?

I'm wondering how I can manipulate the size of strip text in facetted plots. My question is similar to a ... :-( Many thanks in advance. See Question&Answers more detail:os...

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

0 votes

650 views

1 answer

r - How to coerce a list object to type 'double'

The code: a <- structure(list(`X$Days` = c("10", "38", "66", "101", "129", "185", "283", ... object cannot be coerced to type 'double' 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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