Recent questions tagged R

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r - Grouped correlation with dplyr (works only on console)

I'm trying to use dplyr to calculate grouped correlations, but something is clearly wrong since the code below ... 0.02739193 What's happening? See Question&Answers more detail:os...

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

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572 views

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r - Rmarkdown Retain .tex file

In R, when compiling a markdown document using rmarkdown::render(...), how can I retain the intermediate ... to inspect for debugging purposes. 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 - How to collapse sidebarPanel in shiny app?

I have a shiny app with a mainPanel and a sidebarPanel inside a tabPanel in a navbarPage. I need an option to ... ) Hope somebody can help :) 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 - Usage of local variables

Problem: How to define local variables within a scope in a r-code. Example: In C++ the following example ... way to create local variable? 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 - Rmarkdown removes citation hyperlink

when using Rmarkdown to build a pdf with citations included, it removes the hyperlinks of the citations by default ... can make it hyperlinked? See Question&Answers more detail:os...

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

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591 views

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r - Dplyr : how to find the first-non missing string by groups?

Consider the following simple example group <-c('A','A','A','B','B','B','B') names<- c(NA,' ... fred for all three observations.. Many 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 - Frustration using rJava to call a third party Java jar

I'm trying to use R to hook the Java code from the GSRad project. The GSRad Java code is available online and ... I want to hook is this one. 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 - How do I add random `NA`s into a data frame

I created a data frame with random values n <- 50 df <- data.frame(id = seq (1:n), age = sample(c(20: ... I'd prefer to use the apply family. 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 - Enriching a ggplot2 plot with multiple geom_segment in a loop?

I successfully create a plot using the following: # suppose I have a p <- ggplot(data=df, ...) then the ... Can anyone advice what's wrong here? 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 - NaN is removed when using na.rm=TRUE

This reproducible example is a very simplified version of my code: x <- c(NaN, 2, 3) #This is fine, as expected ... for me. is.na(NaN) > TRUE See Question&Answers more detail:os...

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

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496 views

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r - Fastest way to read large Excel xlsx files? To parallelize or not?

My questions are: What is the fastest way to read large(ish) .xlsx Excel files into R? 10 to 200 MB xlsx ... names(mylist) <- sheetnames toc() See Question&Answers more detail:os...

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

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592 views

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r - ggplot2 wind time series with arrows/vectors

From meteorological data (hourly values of temperature, wind and humidity) I managed to plot time series of wind ... " Thanks for your help See Question&Answers more detail:os...

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

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519 views

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r - Split a file path into folder names vector

In R, with file.path, you can convert a character vector into a full file path, automatically using the ... split_path(dirname(path)))) } See Question&Answers more detail:os...

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

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356 views

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r - Plot angle between vectors

I am searching for quite a while already now for a function that plots the angle between two arrows / line ... has a package for everything. See Question&Answers more detail:os...

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

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912 views

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r - How to have a new line in a `bquote` expression used with `text`?

I want to have a new line in my bquote envrionment, how can I do this? my code: test<-c(1,2,3,4,4.5,3.5,5 ... =lines ,col="red", cex = 1.4) See Question&Answers more detail:os...

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

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460 views

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r - How can I color the ocean blue in a map of the US?

I would like to draw a map of the US over an image, but then fill in the oceans. here is my starting point: ... to be filled in a solid color. See Question&Answers more detail:os...

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

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456 views

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r - Extracting output from principal function in psych package as a data frame

When I use the principal function, like in the following code, I get a nice table which gives all the ... Thanks for reading my post! See Question&Answers more detail:os...

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

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689 views

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r - Making gsub only replace entire words?

(I'm using R.) For a list of words that's called "goodwords.corpus", I am looping through the documents in ... it's in quotes. Any suggestions? See Question&Answers more detail:os...

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

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882 views

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r - grid.table and tableGrob in gridExtra package

I am trying to format the table using gridExtra package. The gridExtra package I have is 2.0 and R version ... (something like row.names=FALSE) 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 - How to load xlsx file using fread function?

I wanted to use fread function to load all the datasets as I think it would better to use one type of ... loading it using the fread function? See Question&Answers more detail:os...

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

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1.0k views

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r - nls troubles: Missing value or an infinity produced when evaluating the model

I am an R newbie trying to fit plant photosynthetic light response curves (saturating, curvilinear) to a particular ... ))) coef(curve.nlslrc) See Question&Answers more detail:os...

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

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488 views

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r - calculate row sum and product in data.frame

I would like to append a columns to my data.frame in R that contain row sums and products Consider following ... data frame as shown above? See Question&Answers more detail:os...

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

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551 views

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r - How to find which polygon a point belong to via sf

I have a sf object that contains polygon information (precincts) for a metro area, obtained through a .shp file. ... /lon in the right format. 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 - Extract time (HMS) from lubridate date time object?

I have the following datetime: t <- "2018-05-01 23:02:50 UTC" I want to split it to time and ... missing in lubridate::hms or parse_date_time? See Question&Answers more detail:os...

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

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562 views

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r - ggsave png error with larger size

I'm saving a faceted ggplot2 plot which works fine to save at a smaller size, but fails when I want to ... ",colour=sex)+facet_wrap(~year) See Question&Answers more detail:os...

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

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477 views

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r - Split concatenated column to corresponding column positions

I have a data frame where a column may contain concatenated characters separated by |: df <- data.frame(FOO ... at delimiter in data frame See Question&Answers more detail:os...

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

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442 views

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r - Keep all plot components same size in ggplot2 between two plots

I would like two separate plots. I am using them in different frames of a beamer presentation and I will add ... some of the above solutions. See Question&Answers more detail:os...

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

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643 views

1 answer

r - How to use custom functions in mutate (dplyr)?

I'm rewriting all my code using dplyr, and need help with mutate / mutate_at function. All I need is ... misunderstanding of how dplyr works. See Question&Answers more detail:os...

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

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