Recent questions tagged R

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r - dplyr join warning: joining factors with different levels

When using the join function in the dplyr package, I get this warning: Warning message: In left_join_impl(x, y, ... what it could be? 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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481 views

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r - Suppressing messages in Knitr / Rmarkdown

Here is the code for my RMarkdown file: ```{r echo=FALSE, message=FALSE} opts_chunk$set(comment = NA, echo ... How do I suppress these messages? See Question&Answers more detail:os...

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

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483 views

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r - regex multiple pattern with singular replacement

I am trying to replace both "st." and "ste." with "st". Seems like the following should work but it does not: require(" ... \.", "ste\."), "st") See Question&Answers more detail:os...

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

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754 views

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r - How to dynamically wrap facet label using ggplot2

I'm looking for a way to dynamically wrap the strip label text in a facet_wrap or facet_grid call. I've ... (size=ps, family=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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384 views

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r - How can I sort a data.frame with only one column, without losing rownames?

data = c(1,2,3,4) names = c("foo", "bar", "baz", "yak") d = data.frame(data, row.names=names) This ... name. Is there any sane way to do this? See Question&Answers more detail:os...

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

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409 views

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r - remove the last element of a vector

I need to remove the last number in a groups of vectors, i.e.: v <- 1:3 v1 <- 4:8 should become: v <- 1:2 v1 <- 4:7 See Question&Answers more detail:os...

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

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574 views

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r - Adding vertical line in plot ggplot

I am plotting a graph using the following piece of code: library (ggplot2) png (filename = "graph.png") stats <- ... start at 0.5 instead of 1? See Question&Answers more detail:os...

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

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330 views

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r - Installing RMySQL in mavericks

I am having trouble installing RMySQL. I am trying to install it from its source in the following way: install. ... two hours. Can anyone 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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356 views

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r - Pie plot getting its text on top of each other

Just trying to fix this overlapped labeling: My code: values=c(164241,179670) labels=c("Private", "Public" ... anywhere. Any help appreciated. See Question&Answers more detail:os...

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

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286 views

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r - Ordering Permutation in Rcpp i.e. base::order()

I have a ton of code using the base::order() command and I am really too lazy to code around that in rcpp. Since ... .830 5.434 6.038 60.976 100 See Question&Answers more detail:os...

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

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400 views

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r - How does gganimate order an ordered bar time-series?

I have a time-series of data, where I'm plotting diagnosis rates for a disease on the y-axis DIAG_RATE_65_PLUS, ... =TRUE) + ease_aes('linear') See Question&Answers more detail:os...

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

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458 views

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r - how to remove partial duplicates from a data frame?

Data I'm importing describes numeric measurements taken at various locations for more or less evenly spread timestamps ... and efficient way. See Question&Answers more detail:os...

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

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363 views

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r - Fastest way for multiplying a matrix to a vector

I have a matrix mat and a vector v. I would like to multiply first column of matrix matby first element of vector v ... elapsed 0.02 0.00 0.02 See Question&Answers more detail:os...

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

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420 views

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r - Add new variable to list of data frames with purrr and mutate() from dplyr

I know that there are many related questions here on SO, but I am looking for a purrr solution, please, not one from ... )), .id = "Group" ) See Question&Answers more detail:os...

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

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590 views

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r - How to use 'facet' to create multiple density plot in GGPLOT

I have the following data created on the fly: > df <- data.frame( cbind(rnorm(200),rnorm(200, mean=.8),rnorm( ... facet'. How can I go about it? See Question&Answers more detail:os...

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

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2.0k views

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r - igraph: Resolving tight overlapping nodes

I have a graph with few hundred nodes and edges. The disconnected subgraphs separate out and resolve well but the ... that they do not overlap? See Question&Answers more detail:os...

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

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429 views

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r - Variable Width Bar Plot

I'd like to produce an area/bar graph in R similar to this: (plot from David MacKay's (excellent) ... . Certainty a powerful communication tool. See Question&Answers more detail:os...

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

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380 views

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r - Compute rolling sum by id variables, with missing timepoints

I'm trying to learn R and there are a few things I've done for 10+ years in SAS that I cannot quite ... data.frame(id,class,t,count,desired) See Question&Answers more detail:os...

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

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334 views

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r - Library/package development - message when loading

is there any way to display a message when a user loads library(myCustomLibrary)? Upon loading, I want to ... run all the test functions. See Question&Answers more detail:os...

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

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390 views

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r - stat_contour with data labels on lines

I wonder how to get data labels on lines in ggplot2 for contours. Thanks require(grDevices) # for colours x <- seq( ... = z)) v + stat_contour() See Question&Answers more detail:os...

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

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414 views

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r - How does dplyr’s between work?

I've read the documentation and I've tried googling it; it should be a simple thing, but it would seem it's not to ... than I don't get it'. See Question&Answers more detail:os...

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

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835 views

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r - How to change font size of the correlation coefficient in corrplot?

I am plotting correlation plot with corrplot. I want to plot also the correlation coefficients: require(corrplot) test ... doesn't work either. See Question&Answers more detail:os...

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

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436 views

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r - Error in ConfusionMatrix the data and reference factors must have the same number of levels

I've trained a tree model with R caret. I'm now trying to generate a confusion matrix and keep getting the ... " "82-CHAPS Fee" "Uncategorised" See Question&Answers more detail:os...

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

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543 views

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r - Time difference in years with lubridate?

I would like to use lubridate to calculate age in years given their date of birth and today's date. Right now I ... gives me their age in days. See Question&Answers more detail:os...

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

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473 views

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r - Writing to specific schemas with RPostgreSQL

I'm using RPostgreSQL to read and write data. Reading from any schema works perfectly, but I'm not able to ... another method that I can use. 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

1 answer

r - Meaning of band width in ggplot geom_smooth lm

With the following code: library(ggplot2) ggplot(mtcars, aes(x=wt, y=mpg)) + geom_point(aes(colour=factor(cyl ... the width of that band? See Question&Answers more detail:os...

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

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786 views

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r - "Factor has new levels" error for variable I'm not using

Consider a simple dataset, split into a training and testing set: dat <- data.frame(x=1:5, y=c("a" ... without the need to remove columns. See Question&Answers more detail:os...

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

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354 views

1 answer

r - What is the correct/standard way to check if difference is smaller than machine precision?

I often end up in situations where it is necessary to check if the obtained difference is above machine precision ... due to precision issues? See Question&Answers more detail:os...

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

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