Recent questions tagged R

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r - Add a horizontal line to plot and legend in ggplot2

This code creates a nice plot but I would like to add a horizontal black line at y=50 AND have the legend show ... + geom_smooth(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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365 views

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r - ggplot2: Adjust the symbol size in legends

How should I change the size of symbols in legends? I checked the document of theme but found no answer. Here is ... ) + coord_flip() plot(g) See Question&Answers more detail:os...

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

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700 views

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r - Creating regular 15-minute time-series from irregular time-series

I have an irregular time-series (with DateTime and RainfallValue) in a csv file C:SampleData.csv: DateTime, ... Thank you for any direction! See Question&Answers more detail:os...

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

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380 views

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r - How to maintain size of ggplot with long labels

I have a plot that is a simple barplot of number of each type of an event. I need the labels of the plot ... I put a legend beneath the 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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730 views

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r - predict.lm() in a loop. warning: prediction from a rank-deficient fit may be misleading

This R code throws a warning # Fit regression model to each cluster y <- list() length(y) <- k vars <- list ... 't figure out what the issue is. 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 - Inverse of ggplotGrob?

I have a function which manipulates a ggplot object, by converting it to a grob and then modifying the layers. I ... , SIMPLIFY = FALSE) G } 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 - What is the right way to multiply data frame by vector?

I'm trying to multiply a data frame df by a vector v, so that the product is a data frame, where ... an efficient and elegant workaround here? See Question&Answers more detail:os...

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

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340 views

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r - Efficient row-wise operations on a data.table

I need to find the row-wise minimum of many (+60) relatively large data.frame (~ 250,000 x 3) (or I ... way to do simple row-wise opertations? 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 - How can I `print` or `cat` when using parallel

If I call a function using parSapply then print, message or cat statements inside that function don't seem to ... :10, oneloop) stopCluster(cl) See Question&Answers more detail:os...

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

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249 views

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r - Faster weighted sampling without replacement

This question led to a new R package: wrswoR R's default sampling without replacement using sample.int seems ... have this performance penalty. See Question&Answers more detail:os...

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

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591 views

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r - How to use map from purrr with dplyr::mutate to create multiple new columns based on column pairs

I have to following issue using R. In short I want to create multiple new columns in a data frame based ... appreciate any help on this issue. See Question&Answers more detail:os...

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

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578 views

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r - Can Sweave produce many pdfs automatically?

I analyze measurements from many cities (hundreds), and need to create separate reports per city (in Adobe pdf- ... you r-contributors! /Chris See Question&Answers more detail:os...

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

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426 views

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r - Grid of multiple ggplot2 plots which have been made in a for loop

as a new ggplot2 user, I am a bit lost with the amount of possibilities, and struggle to find on the net a ... manage this ? Thank you, Fran?ois See Question&Answers more detail:os...

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

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200 views

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r - knitr gets tricked by data.table `:=` assignment

It seems that knitr doesn't understand that DT[, a:=1] should not result in an output of DT to the document. ... fail for 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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307 views

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r - Create dataframe from a matrix

How to get a data frame with the same data as an already existing matrix has? A simplified example of my ... few more columns (40 columns). See Question&Answers more detail:os...

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

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464 views

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r - lme4::lmer reports "fixed-effect model matrix is rank deficient", do I need a fix and how to?

I am trying to run a mixed-effects model that predicts F2_difference with the rest of the columns as predictors, ... still a very good post! See Question&Answers more detail:os...

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

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471 views

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r - percentage on y lab in a faceted ggplot barchart?

doing facets in ggplot I would often like the percentage to be used instead of counts. e.g. test1 <- ... my question makes sense. Sincerely. See Question&Answers more detail:os...

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

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652 views

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r - ggplot2 bar plot, no space between bottom of geom and x axis keep space above

When I plot a bar graph in ggplot2 I would like to reduce the space between the bottom of the bars and the x-axis ... ="Stretch it"), vjust=-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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321 views

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r - How do I extract just the number from a named number (without the name)?

I am looking for just the value of the B1(newx) linear model coefficient, not the name. I just want the 0 ... out$coefficients["newx"] newx 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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292 views

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r - How do I show the y value on tooltip while hover in ggplot2

I want the show the y-value when I hold my mouse on a point in the graph. The code for my plot looks ... Does anyone know what I did 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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372 views

1 answer

r - Pattern matching using a wildcard

How do I identify a string using a wildcard? I've found glob2rx, but I don't quite understand how to use it ... function to try and 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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348 views

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r - Merging multiple data.tables

I am aware that one can merge (join) two data.table with the merge function or the [.data.table function. ... works for only very special cases. 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 get a barplot with several variables side by side grouped by a factor

I have a dataset which looks like this one below. I am trying to make a barplot with the grouping variable ... . any help will be 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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328 views

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r - In ggplot2, what do the end of the boxplot lines represent?

I can't find a description of what the end points of the lines of a boxplot represent. For example, here ... not represent the max/min values. See Question&Answers more detail:os...

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

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492 views

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r - How to Convert data frame to spatial coordinates

I have been working on earthquake data that has lat long values, and I want to convert those lat long ... FALSE) : undefined columns selected See Question&Answers more detail:os...

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

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205 views

1 answer

r - Is it a good practice to call functions in a package via ::

I'm writing some R functions that employ some useful functions in other packages like stringr and base64enc. Is ... problem might it induce? See Question&Answers more detail:os...

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

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387 views

1 answer

r - Access and preserve list names in lapply function

I need to access list names inside the lapply function. I've found some threads online where it's said I ... in the same order than mylist. See Question&Answers more detail:os...

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

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240 views

1 answer

r - Why use as.factor() instead of just factor()

I recently saw Matt Dowle write some code with as.factor(), specifically for (col in names_factors) set(dt, j ... factor() versus just factor()? See Question&Answers more detail:os...

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

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