Recent questions tagged R

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In another question, sapply(substitute(...()), as.character) was used inside a function to obtain the names passed to the ... ..) > test(T,F) T 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 - When should I use setDT() instead of data.table() to create a data.table?

I am having difficulty grasping the essence of the setDT() function. As I read code on SO, I frequently come across ... setDT() is able to do? 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 - Reset the graphical parameters back to default values without use of dev.off()

Such as margins, orientations and such... dev.off() does not work for me. I am often using RStudio, ... however, that always returns RStudioGD. 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 show code but hide output in RMarkdown?

I want my html file to show the code, but not the output of this chunk: ```{r echo=True, include=FALSE} ... hide the prints, but show my code? 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

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r - Remove data.frame row names when using xtable

OK, I admit this one is a bit uptight (read: "stupid"), and I assume it's quite easy too. I'm writing a ... this (in one-liner, if possible)? See Question&Answers more detail:os...

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

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356 views

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r - How to extract fitted splines from a GAM (`mgcv::gam`)

I am using GAM to model time trends in a logistic regression. Yet I would like to extract the the ... Any suggestion is really 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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649 views

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r - ggplot geom_bar: meaning of aes(group = 1)

I am learning geom_bar on section 3.7 of r4ds.had.co.nz. I run a code like this: library(ggplot2) ggplot(data = ... = 1 here and how to use it. See Question&Answers more detail:os...

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

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335 views

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r - Ordering of bars in ggplot

I have looked through the answers in this forum but cannot seem to find an answer to this specific problem. ... any help! Thanks, Greg 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 fetch(key) : lazy-load database

I don't know what is going on, everything was working great but suddenly I started to have this error ... ://github.com/WilliamKinaan/descopl 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 - ggplot map with l

I want to plot a world map using ggplot2 (v.9) which combines two pieces if information. The following ... result http://ompldr.org/vY3hsYQ See Question&Answers more detail:os...

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

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277 views

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r - How to convert a huge list-of-vector to a matrix more efficiently?

I have a list of length 130,000 where each element is a character vector of length 110. I would like to convert ... ]],ncol=10,byrow=TRUE)) } See Question&Answers more detail:os...

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

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883 views

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r - Easier way to plot the cumulative frequency distribution in ggplot?

I'm looking for an easier way to draw the cumulative distribution line in ggplot. I have some data whose ... be added by specifying options? See Question&Answers more detail:os...

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

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644 views

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r - Greek letters, symbols, and line breaks inside a ggplot legend label

I am trying to have line breaks (automatic or forced) justify the text (left or both left and right) ... latex Greek letters in ggplot annotate See Question&Answers more detail:os...

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

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282 views

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r - Given a set of random numbers drawn from a continuous univariate distribution, find the distribution

Given a set of real numbers drawn from a unknown continuous univariate distribution (let's say is is one ... identification won't be possible. See Question&Answers more detail:os...

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

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629 views

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r - Reorder rows using custom order

Given data: library(data.table) DT = data.table(category=LETTERS[1:3], b=1:3) DT # category b # 1: A 1 # 2: B 2 # 3: ... : C 3 # 2: A 1 # 3: B 2 See Question&Answers more detail:os...

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

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556 views

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r - How to increase the size of points in legend of ggplot2?

I have thousands of points in one figure and set the "size = 1". However the point size in the legend is reduced ... ) + geom_point(size = 1) 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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351 views

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r - Convert a row of a data frame to vector

I want to create a vector out of a row of a data frame. But I don't want to have to row and column names. I tried ... > newV [1] 1.0 2.0 2.6 See Question&Answers more detail:os...

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

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361 views

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r - Remove plot axis values

I was just wondering if there is a way to get rid of axis values, either the x-axis or y-axis respectively, ... to get rid of the numbering. See Question&Answers more detail:os...

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

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244 views

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r - Avoid wasting space when placing multiple aligned plots onto one page

I'd like to place four plots onto a single page. Axis labels should be printed only at the very rim, i.e. ... How can I achieve such a layout? See Question&Answers more detail:os...

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

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358 views

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r - switch() statement usage

I am a little confused about the switch statement in R. Simply googling the function I get an example ... examples and better applications? See Question&Answers more detail:os...

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

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376 views

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r - How to properly document S4 class slots using Roxygen2?

For documenting classes with roxygen(2), specifying a title and description/details appears to be the same as ... development page on github. See Question&Answers more detail:os...

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

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447 views

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r - qqnorm and qqline in ggplot2

Say have a linear model LM that I want a qq plot of the residuals. Normally I would use the R base graphics: ... color="blue") return(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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1.1k views

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r - Shift legend into empty facets of a faceted plot in ggplot2

Consider the following plot: library(ggplot2) p <- ggplot(diamonds, aes(x = carat, fill = cut)) + geom_density( ... , as the case may be. See Question&Answers more detail:os...

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

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306 views

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r - Get column index from label in a data frame

Say we have the following data frame: > df A B C 1 1 2 3 2 4 5 6 3 7 8 9 We can select column 'B' ... index (2) from the column label ('B')? 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 - How do I clear only a few specific objects from the workspace?

I would like to remove some data from the workspace. I know the "Clear All" button will remove all data. However, ... what I would like to do. See Question&Answers more detail:os...

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

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363 views

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r - Plot causes "Error: Incorrect Number of Dimensions"

I am learning about the "kohonen" package in R for the purpose of making Self Organizing Maps (SOM, also ... versions/2.0.5/topics/supersom See Question&Answers more detail:os...

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

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565 views

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r - ICU init failed: U_FILE_ACCESS_ERROR - when running swirl

I Keep getting this error whenever I library(swirl): Error in inDL(x, as.logical(local), as.logical(now), .. ... sure why it is not working 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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307 views

1 answer

r - Display y-axis for each subplot when faceting

I am plotting three plots next to each other using facet_grid. Facet grid will only draw the y-axis for the ... (), legend.key=element_blank()) See Question&Answers more detail:os...

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

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