Recent questions tagged R

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r - ggplot2 equivalent of matplot() : plot a matrix/array by columns?

matplot() makes it easy to plot a matrix/two dimensional array by columns (also works on data frames): a <- ... vector (of length=ncol(a))? See Question&Answers more detail:os...

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

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318 views

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r - How to set unique row and column names of a matrix when its dimension is unknown?

I have matrix like : [,1][,2][,3][,4] [1,] 12 32 43 55 [2,] 54 54 7 8 [3,] 2 56 76 88 [4,] 58 99 ... a", "b", "c", "d") colnames(rmatrix) <- nm See Question&Answers more detail:os...

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

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280 views

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r - Debugging (line by line) of Rcpp-generated DLL under Windows

Recently I've been experimenting with Rcpp (inline) to generate DLLs that perform various tasks on supplied R inputs. ... for your help 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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248 views

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r - package 'stringi' does not work after updating to R3.2.1

I saw a version of this question posted, but still did not see the answer. I am trying to use ggplot2 but get ... .1 digest_0.6.8 proto_0.3-10 See Question&Answers more detail:os...

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

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362 views

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r - Is there a reason to prefer extractor functions to accessing attributes with $?

On a thread on CrossValidated, I made the following comment: I suspect this is actually an R question about ... accessing the t-statistics)? See Question&Answers more detail:os...

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

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407 views

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r - read.csv blank fields to NA

I have tab delimited text file, named 'a.txt'. The D column is empty. A B C D 10 20 NaN 30 40 40 30 ... the output should also have NA or NaN. See Question&Answers more detail:os...

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

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725 views

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r - Remove Plot Margins in ggplot2

I'm trying to produce a png chart using ggplot2 and ggsave (with Cairo) in R. I'm having an issue with customising ... "mm", type ="cairo-png") 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 - Align text inside a plot

I am an R newbie and had a question. I am trying to place some text into an R plot. Here's some code ... to make the text left alligned. 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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r - Warning in install.packages : installation of package ‘tidyverse’ had non-zero exit status

I am using this site for reference: http://r4ds.had.co.nz/introduction.html but I am unable to install the ... installation of package xml2' had non-zero exit status * inst...

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

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474 views

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r - ggplot2 avoid boxes around legend symbols

Consider the example plot below. I'd like to make the little boxes around each of the symbols in the legend go ... + geom_point() + theme_bw() See Question&Answers more detail:os...

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

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461 views

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r - Overlapping Genomic Ranges

I have two files encode X.pattern.name chr start stop strand score p.value q.value matched.sequence 1 V_CETS1P54_01 chr1 ... & endB >= endA),] See Question&Answers more detail:os...

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

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556 views

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r - Arrange plots in a layout which cannot be achieved by 'par(mfrow ='

I have three plots which I would to arrange in a single window. I can arrange similar-sized plots on a regular ... . How can I achieve 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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473 views

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r - Factor order within faceted dotplot using ggplot2

I'm trying to change the plotting order within facets of a faceted dotplot in ggplot2, but I can't get ... any suggestions you might have. See Question&Answers more detail:os...

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

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328 views

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r - using Rcurl with HTTPs

I tried the following code in R on windows: library(RCurl) postForm("https://www.google.com/accounts/ClientLogin/", ... to allow use of HTTPs? See Question&Answers more detail:os...

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

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303 views

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r - How to split a data frame by rows, and then process the blocks?

I have a data frame with several columns, one of which is a factor called "site". How can I split the data ... of year vs peak for each site. See Question&Answers more detail:os...

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

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554 views

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r - ggplot: Multiple years on same plot by month

So, I've hit something I don't think I have every come across. I scoured Google looking for the answer, ... appreciated. Thank you 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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398 views

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r - How to correctly interpret ggplot's stat_density2d

My initial goal was to plot a population of individual points and then draw a convex hull enclosing 80% ... within the 80% probability polgyon See Question&Answers more detail:os...

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

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307 views

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r - Delete columns where all values are 0

I have a numeric matrix with 15000 columns. I want to completely remove the columns where all values are 0. col1 col2 ... I do it with R? 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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511 views

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r - apply() is slow - how to make it faster or what are my alternatives?

I have a quite large data frame, about 10 millions of rows. It has columns x and y, and what I want is to ... the fastest way to do this thing? See Question&Answers more detail:os...

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

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328 views

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r - Defer code to END of document in knitr

I am trying to write a report in rmarkdown and then use knitr to generate a pdf. I want all the code to be ... 't figure out 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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364 views

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r - Reading Excel file: How to find the start cell in messy spreadsheets?

I'm trying to write R code to read data from a mess of old spreadsheets. The exact location of the data ... hoping for a more elegant solution See Question&Answers more detail:os...

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

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341 views

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r - Error with ggplot2 mapping variable to y and using stat="bin"

I am using ggplot2 to make a histogram: geom_histogram(aes(x=...), y="..ncount../sum(..ncount..)") and ... unclear about what ..scaled.. does. See Question&Answers more detail:os...

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

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694 views

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r - Calculating the difference between consecutive rows by group using dplyr?

I have a dataframe of ids and timestamps. I'd like to calculate the difference between each sequential timestamp for ... read than vanilla 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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355 views

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r - How to use earlier declared variables within aes in ggplot with special operators (..count.., etc.)

Let's say I want to plot histogram with the following formula (I know it's not the best but it ... like variables with some predefined ones? See Question&Answers more detail:os...

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

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295 views

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r - How to write a function that calls a function that calls data.table?

The package data.table has some special syntax that requires one to use expressions as the i and j arguments ... function that calls data.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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542 views

1 answer

r - Summing across rows of a data.table for specific columns

I have a large data table (from the package data.table) with over 60 columns (the first three corresponding to ... columns of a data.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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539 views

1 answer

r - RSelenium: server signals port is already in use

I'm using the following code in RSelenium to open a browser. After I close the browser, or even close the ... <- rD$client remDr$close() Thanks See Question&Answers more detail:os...

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

0 votes

328 views

1 answer

r - Reshaping an array to data.frame

I have the following data structure (an "atomic vector?") output from daply in plyr, in which I had the function ... an easy way 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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