Recent questions tagged R

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r - Combine/merge lists by elements names

I have two lists, whose elements have partially overlapping names, which I need to merge/combine together into a ... achieve that? Thank you! See Question&Answers more detail:os...

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

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352 views

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r - Split a string by any number of spaces

I have the following string: [1] "10012 ---- ---- ---- ---- CAB UNCH CAB" I want to split this ... the gaps? One line of code is preferred. See Question&Answers more detail:os...

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

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294 views

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r - Eliminating NAs from a ggplot

Very basic question here as I'm just starting to use R, but I'm trying to create a bar plot of factor ... can someone please help me 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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346 views

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r - Passing list of named parameters to function?

I want to write a little function to generate samples from appropriate distributions, something like: makeSample <- ... figure it out. 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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366 views

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r - How to move or position a legend in ggplot2

I'm trying to create a ggplot2 plot with the legend beneath the plot. The ggplot2 book says on p 112 "The position ... , so I figure it's me. See Question&Answers more detail:os...

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

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570 views

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r - Colorbar from custom colorRampPalette

I have defined a colorRampPalette: my.colors = colorRampPalette(c("light green", "yellow", "orange", "red")) ... this on top of another plot. 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 - Strategies for reading in CSV files in pieces?

I have a moderate-sized file (4GB CSV) on a computer that doesn't have sufficient RAM to read it in (8GB on 64- ... the best way to go for now. See Question&Answers more detail:os...

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

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332 views

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r - Sum every nth points

I have a vector and I need to sum every n numbers and return the results. This is the way I plan on doing it ... 255 355 455 555 655 755 855 955 See Question&Answers more detail:os...

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

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692 views

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r - Error in loadNamespace(name) : there is no package called 'Rcpp'

I am trying to embed RInside to my application on win7 64-bit system but when I initialize an RInside: Rin ... error only occurs with Windows. See Question&Answers more detail:os...

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

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454 views

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r - Convert currency with commas into numeric

I have a column in a dataframe as follows: COL1 $54,345 $65,231 $76,234 How do I convert it into this: ... the same this happened. 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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407 views

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r - Override a function that is imported in a namespace

As the termplot function in R is containing some weird code that is giving me annoying bugs, I want to ... taking the effort to answer. See Question&Answers more detail:os...

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

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348 views

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r - Getting OVER QUERY LIMIT after one request with geocode

I'm using the ggmap's geocode to find the latitude and longitude of different cities. It worked completely fine ... on anything please tell me! See Question&Answers more detail:os...

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

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354 views

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r - Splitting a file name into name,extension

I have the name of a file like this: name1.csv and I would like to extract two substrings of this string. ... found anything at all. 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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494 views

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r - How to reset row names?

Here is a sample data set: sample1 <- data.frame(Names=letters[1:10], Values=sample(seq(0.1,1,0.1))) When I'm ... 0.8 9 a 0.9 10 b 1.0 See Question&Answers more detail:os...

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

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550 views

1 answer

r - Error in grid.Call(L_textBounds, as.graphicsAnnot(x$label), x$x, x$y, : Polygon edge not found

I just installed RStudio on Mac OS X, version 10.7.3. After executing the following commands library(ggplot2) qplot(mpg ... " How do I fix 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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1.3k views

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r - rvest Error in open.connection(x, "rb") : Timeout was reached

I'm trying to scrape the content from http://google.com. the error message come out. library(rvest) html(" ... use set_config ,but not working . See Question&Answers more detail:os...

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

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381 views

1 answer

r - export data frames to Excel via xlsx with conditional formatting

I want to export data frames to Excel and highlight cells according to certain rules. I don't think ... : cannot determine object class See Question&Answers more detail:os...

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

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339 views

1 answer

r - eval and quote in data.table

What am I missing here? d = data.table(a = 1:5) d[, a] # 1 2 3 4 5 d[, sum(a)] # 15 d[, eval(quote( ... m running R 2.15.0 and data.table 1.8.9. See Question&Answers more detail:os...

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

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765 views

1 answer

r - How can I insert an image into the navbar on a shiny navbarPage()

I am builidng a shiny application using a navbarPage() layout. I would like to insert an image to be on ... image on the navigation bar itself? See Question&Answers more detail:os...

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

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280 views

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r - if - else if - else statement and brackets

I understand the usual way to write an "if - else if" statement is as follow: if (2==1) { print ... statement in R, especially without brackets? See Question&Answers more detail:os...

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

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401 views

1 answer

r - dplyr::mutate to add multiple values

There are a couple of issues about this on the dplyr Github repo already, and at least one related SO question, ... 4 11 0.10926344 0.6920953 See Question&Answers more detail:os...

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

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408 views

1 answer

r - changing ggplot factor colors?

I notice that here Box and whiskers plot the call: p + geom_boxplot(aes(fill = factor(cyl))) generates bright ... how can you change it? 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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513 views

1 answer

r - Getting the last n elements of a vector. Is there a better way than using the length() function?

If, for argument's sake, I want the last five elements of a 10-length vector in Python, I can use the "- ... useful to work only on recent data. See Question&Answers more detail:os...

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

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291 views

1 answer

r - Data Table merge based on date ranges

I have two tables, policies and claims policies<-data.table(policyNumber=c(123,123,124,125), EFDT=as.Date(c("2012-1- ... 2014-02-01 NA <NA> NA See Question&Answers more detail:os...

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

0 votes

510 views

1 answer

r - Create a Data Frame of Unequal Lengths

While data frame columns must have the same number rows, is there any way to create a data frame of unequal lengths. I'm ... ",5), rep("",5))) See Question&Answers more detail:os...

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

0 votes

376 views

1 answer

r - World map with ggmap

I am using ggmap and wish to have a map of the world centered on Australia to which I can easily plot geocoded ... 2.1 stringr_0.6 tools_2.15.0 See Question&Answers more detail:os...

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

0 votes

427 views

1 answer

r - Subset data.frame by date

I have a dataset called EPL2011_12. I would like to make new a dataset by subsetting the original by date. The dates ... that why it won't work? See Question&Answers more detail:os...

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

0 votes

404 views

1 answer

r - Adding labels to ggplot bar chart

I would like to do a bar plot outlined in black with percentages inside the bars. Is this possible from qplot? I ... = 'bottom') print(bar) See Question&Answers more detail:os...

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

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