Recent questions tagged R

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I have a series of csv files (one per anum) with the same column headers and different number of rows. Originally ... ("C://R//mergeme") See Question&Answers more detail:os...

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

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r - Insert a blank row after each group of data

This question has been asked for excel. How to automatically insert a blank row after a group of data I would like to ... 24 9 12 d 25 10 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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476 views

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r - using two scale colour gradients on one ggplot

I would like to combine a colour scale gradient for the points on a scatter plot together with a colour scale ... geom_smooth(method="loess") p1 See Question&Answers more detail:os...

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

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r - How to create a dendrogram with colored branches?

I would like to create a dendrogram in R which has colored branches, like the one shown below. So far I ... Thanks in advance for your 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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r - Increase resolution of color scale for values close to zero

I'd like to make small returns in this plot more visible. The most appropriate function seems to be ... )), oob = identity) See Question&Answers more detail:os...

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

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297 views

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r - Reading multiple files into multiple data frames

In d:folder, I have many Stata files, such as data_aa_1.dta, data_aa_2.dta, data_aa_3.dta data_bb_1.dta, ... help will be appreciated. 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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r - Scraping with rvest - complete with NAs when tag is not present

I want to parse this HTML: and get this elements from it: a) p tag, with class: "normal_encontrado". b) div ... (".price") %>% html_text() See Question&Answers more detail:os...

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

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r - Call a function from c++ via environment Rcpp

I am considering calling a R function from c++ via environment, but I got an error, here is what I ... still wondering why first method failed. See Question&Answers more detail:os...

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

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r - Switch displayed traces via plotly dropdown menu

I am working with the R programming language. I am trying to replicate this tutorial over here for my own data: ... as a "html" file) 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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r - rbind data frames based on a common pattern in data frame name

Say I have multiple data frames which all have identical vector names and I'd like to cbind all which have ... whole thing rather than rbinding. See Question&Answers more detail:os...

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

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313 views

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r - rle-like function that catches "run" of adjacent integers

I'm pretty sure that you all agree that rle is one of those "gotcha" functions in R. Is there any similar ... this, but still... any ideas? See Question&Answers more detail:os...

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

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297 views

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r - Subsetting a dataframe for a specified month and year

I have a dataframe where the first column is a date in d/m/y format and the second is a numeric value ( ... thanks for the help you can give. See Question&Answers more detail:os...

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

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r - read/write data in libsvm format

How do I read/write libsvm data into/from R? The libsvm format is sparse data like <class/target>[ ... to provide the necessary functionality. See Question&Answers more detail:os...

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

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379 views

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r - Different legend-keys inside same legend in ggplot2

Let's say I don't need a 'proper' variable mapping but still would like to have legend keys to help the ... Other ideas more than welcome!!! See Question&Answers more detail:os...

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

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629 views

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r - Remove everything after space in string

I would like to remove everything after a space in a string. For example: "my string is sad" should return ... have been unsuccessful so far. See Question&Answers more detail:os...

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

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386 views

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r - Add a column with count of NAs and Mean

I have a data frame and I need to add another column to it which shows the count of NAs in all the other ... the NON-NA values in that row. See Question&Answers more detail:os...

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

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355 views

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r - How to apply cross-hatching to a polygon using the grid graphical system?

Several functions in R's base graphical system, including rect() and polygon(), support cross-hatching via their ... will make this possible? See Question&Answers more detail:os...

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

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543 views

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r - setting upper and lower limits in rnorm

I am simulating data using rnorm, but I need to set an upper and lower limit, does anyone know how to do this? code: ... m=39.74,sd=25.11,mk=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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337 views

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r - Change day of the month in a Date to first day (01)

I want to set the day of month in a Date to start date of current month (01). Now I use the following: ... there any easy way to do this? See Question&Answers more detail:os...

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

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450 views

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r - Split the title onto multiple lines?

In an R markdown document (html and presentations), is it possible to manually split the title onto ... output: ioslides_presentation --- See Question&Answers more detail:os...

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

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409 views

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r - Is there a faster lm function

I would like to get the slope of a linear regression fit for 1M separate data sets (1M * 50 rows ... any faster function for linear regression? 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

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r - Subset xts object by time of day

A simple question: I know how to subset time series in xts for years, months and days from the help: x['2000 ... case. Does anybody have a clue? See Question&Answers more detail:os...

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

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350 views

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r - set ggplot plots to have same x-axis width and same space between dot plot rows

Updated question to incorporate a partial solution already answered on SO I am using ggplot2 to create several plots and ... gA, gB, ncol=1) See Question&Answers more detail:os...

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

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665 views

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r - how to debug "factor has new levels" error for linear model and prediction

I am trying to make and test a linear model as follows: lm_model <- lm(Purchase ~., data = train) lm_prediction ... 1033 299 1212 1967 100 645 > See Question&Answers more detail:os...

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

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317 views

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r - Replace empty values with value from other column in a dataframe

In one column of my dataframe I have some empty cells. The data looks like this: yymmdd lat lon mag depth knmilocatie ... . How do I solve this? 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 - How to complete missing factor levels in data frame?

Lets pretend I have something like this: df <- data.frame( PERSON = c("Peter", "Peter", "Marcel" , "Lisa ... , that I used this function wrong. See Question&Answers more detail:os...

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

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370 views

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r - ggplot2: How to use same colors in different plots for same factor

How can I pin the same color to a value in diffent plots? Say I have two data.frames df1 and df2: library( ... values of c get the same color. See Question&Answers more detail:os...

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

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887 views

1 answer

r - Error in loading rgl package with Mac OS X

I am trying to install rgl package (0.92.858) for R (2.14.2) under Mac OS X (Lion 10.7.3). ... experienced similar problem? Any way solving 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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