Recent questions tagged R

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r - How to change the figure caption format in bookdown

When using bookdown (single document), figures are numbered automatically as: Figure 1 Text of figure caption. In ... stop in the end). 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 - Error in model.frame.default: variable lengths differ

On running a gam model using the mgcv package, I encountered a strange error message which I am unable to ... produced the same error message. See Question&Answers more detail:os...

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

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496 views

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r - optimized rolling functions on irregular time series with time-based window

Is there some way to use rollapply (from zoo package or something similar) optimized functions (rollmean, rollmedian ... advance for the 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 - Split dataframe using two columns of data and apply common transformation on list of resulting dataframes

I want to split a large dataframe into a list of dataframes according to the values in two columns. I then want ... column of data at a time. 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 define fixed aspect-ratio for scatter-plot

I am plotting correlation coefficients (values = 0.0:1.0) for two isotopes measured in each individual from two populations ... = "n") par(opar) See Question&Answers more detail:os...

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

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423 views

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r - What does the function invisible() do?

R help explains invisible() as "a function that returns a temporarily invisible copy of an object". I have ... very much 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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469 views

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r - Extract file extension from file path

How can I extract the extension of a file given a file path as a character? I know I can do this via ... built-in function to deal with 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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r - Conditional cumsum with reset

I have a data frame, the data frame is already sorted as needed, but now I will like to "slice it" in ... solution instead of a for loop 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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374 views

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r - Interpolating timeseries

I have two sets of data with different time stamps. One set of data contains calibration data, the other contains ... where both ts are random)? 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 - Show names of everything in a package

Is there an easy way to list everything in a package from within R? For example, if I type foreach:: ... not show things like .foreachGlobals See Question&Answers more detail:os...

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

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434 views

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r - Splitting a large data frame into smaller segments

I have the following data frame and I want to break it up into 10 different data frames. I want to break the ... ') way to perform this task. See Question&Answers more detail:os...

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

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488 views

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r - How can I read the header but also skip lines - read.table()?

Data.txt: Index;Time; 1;2345; 2;1423; 3;5123; The code: dat <- read.table('data.txt', skip = 1, nrows = 2, ... 2 1423 2 3 5123 How do I do that? See Question&Answers more detail:os...

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

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412 views

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r - First entry from string split

I've got a column people$food that has entries like chocolate or apple-orange-strawberry. I want to split ... find an equivalent for R. See Question&Answers more detail:os...

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

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756 views

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r - How to not show all labels on ggplot axis?

I'm trying to using ggplot2 to plot this: But as you can see on the x axis you can't read anything... So how ... .)) + geom_line(aes(group = 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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458 views

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r - Selecting a subset of columns in a data.table

I'd like to print all the columns of a data table dt except one of them named V3 but don't want to refer ... I used above but using data table. See Question&Answers more detail:os...

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

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574 views

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r - Replace logical values (TRUE / FALSE) with numeric (1 / 0)

I am exporting data from R with the command: write.table(output,file = "data.raw", na "-9999", sep = "", row.names = ... ] DT[ , V4:= V2 != 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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402 views

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r - Why does NaN^0 == 1

Prompted by a spot of earlier code golfing why would: >NaN^0 [1] 1 It makes perfect sense for NA^0 ... with how R represents these constants? See Question&Answers more detail:os...

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

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638 views

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r - Object not found error when passing model formula to another function

I have a weird problem with R that I can't seem to work out. I've tried to write a function that performs ... cv.step(lm.cars) Any thoughts? See Question&Answers more detail:os...

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

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595 views

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r - Creating (and Accessing) a Sparse Matrix with NA default entries

After learning about the options for working with sparse matrices in R, I want to use the Matrix package to create a ... , class = "data.frame") See Question&Answers more detail:os...

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

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488 views

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r - POST request using RCurl

As a way of exploring how to make a package in R for the Denver RUG, I decided that it would be a ... with the data science toolkit. Cheers. See Question&Answers more detail:os...

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

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673 views

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r - Add values to a reactive table in shiny

I want users of my shiny app to be able to add elements to a table iteratively, but I can't work out how ... (tableStart, newEntry())}) })) See Question&Answers more detail:os...

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

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645 views

1 answer

r - Issue with ggplot2, geom_bar, and position="dodge": stacked has correct y values, dodged does not

I'm having quite the time understanding geom_bar() and position="dodge". I was trying to make some bar graphs ... ", position="dodge") p See Question&Answers more detail:os...

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

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501 views

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r - Avoiding the infamous "eval(parse())" construct

Ok, so I'm running some loops to process data stored in list objects. Ever mindful of the infamous fortune ... .)) is often suboptimal ? See Question&Answers more detail:os...

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

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511 views

1 answer

r - How to put a geom_sf produced map on top of a ggmap produced raster

I tried the following code: library(ggplot2) library(ggmap) library(sf) nc <- st_read(system.file("shape/nc ... success. any suggestion? 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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498 views

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r - Crop for SpatialPolygonsDataFrame

I have two SpatialPolygonsDataFrame files: dat1, dat2 extent(dat1) class : Extent xmin : -180 xmax ... for signature"SpatialPolygonsDataFrame"' See Question&Answers more detail:os...

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

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423 views

1 answer

r - Print pretty data.frames/tables to console

Is there a way to print small data.frames to the console in a more readable manner? For example, would ... the spacing between columns. 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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465 views

1 answer

r - Insert line breaks in long string -- word wrap

Here is a function I wrote to break a long string into lines not longer than a given length strBreakInLines <- ... get rid of the for loop? See Question&Answers more detail:os...

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

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637 views

1 answer

r - Knitr wont compile PDF: "Error in tools::file_path_as_absolute(output_file)"

I have created a report in markdown and use the function render() to compile the code into a PDF. It ... problem will be highly appreciated! See Question&Answers more detail:os...

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

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