Recent questions tagged R

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r - How do I include italic text in geom_text_repel or geom_text labels for ggplot?

Is it possible to pass partially italicized text labels into ggplot? I have tried using the expression and italic commands ... (aes(label = V3)) 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 change fontface (bold/italics) for a cell in a kable table in rmarkdown?

Is there a way to format a single cell in a table in rmarkdown? I am using kable to generate a table as ... end of the table. Any pointers? See Question&Answers more detail:os...

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

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441 views

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r - devtools::install_github fails with CA cert error

When I try to call install_github, I get the following error (not just for this package, but for all github ... . Can anyone offer a solution? See Question&Answers more detail:os...

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

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470 views

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r - reshape wide to long with character suffixes instead of numeric suffixes

Inspired by a comment from @gsk3 on a question about reshaping data, I started doing a little bit of ... be considered instead of reshape? See Question&Answers more detail:os...

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

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636 views

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r - Changing format of some axis labels in ggplot2 according to condition

I have a ggplot and I want to highlight only some specific x-axis labels according to a predefined condition. I ... that have condition = 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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297 views

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r - Auto complete and selection of multiple values in text box shiny

Is it possible to select multi values using auto complete strings similar to google search and stack overflow tags ... but this is not working 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

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r - The right way to plot multiple y values as separate lines with ggplot2

I often run into an issue where I have a data frame that has a single x variable, one or more facet variables, ... a good way of doing 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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472 views

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r - Shrink DT::dataTableOutput Size

I have a shiny interface, and I use DT::dataTableOutput and DT::renderDataTable a lot. However, I wonder if ... options or tags should I add? See Question&Answers more detail:os...

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

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617 views

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r - Justification of multiple legends in ggmap/ggplot2

I am trying to make a map with two legends denoting shape and colour ("Type" and "Org" in the example below ... ggmap(osmMap) + points + legend 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 - dplyr::n() returns "Error: This function should not be called directly"

If I do: dplyr::mutate(MeanValue = mean(RSSI), ReadCount = n()) everything works fine. But when I try to ... not the only one confused by 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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410 views

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r - Extract standard errors from glm

I did a glm and I just want to extract the standard errors of each coefficient. I saw on the internet the ... not find function "se.coef"". See Question&Answers more detail:os...

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

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711 views

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r - Hollow histogram or binning for geom_step

I would like to draw a hollow histogram that has no vertical bars drawn inside of it, but just an outline. I ... color="black", direction="vh") 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 - Replacing all occurrences of a pattern in a string

Used to run R with numbers and matrix, when it comes to play with strings and characters I am lost. I want to ... the two last characters ("). See Question&Answers more detail:os...

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

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523 views

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r - Remove NA/NaN/Inf in a matrix

I want to try two things : How do I remove rows that contain NA/NaN/Inf How do I set value of data point ... (list or vector) of type 'closure' See Question&Answers more detail:os...

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

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474 views

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r - How do I make my axis ticks face Inwards in ggplot2

I have made a barplot using ggplot2 and the Journal I need to submit to requires that the axis ticks face inwards ... my axis to face inwards? See Question&Answers more detail:os...

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

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332 views

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r - Favicon in Shiny

I wanted to add a favicon to my WebApp I'm using this line, but it doesn't work: HTML("<link rel="icon" ... Do you know how to do it? 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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624 views

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r - Why is expand.grid faster than data.table 's CJ?

> system.time(expand.grid(1:1000,1:10000)) user system elapsed 1.65 0.34 2.03 > system.time(CJ(1:1000,1:10000 ... system elapsed 3.48 0.32 3.79 See Question&Answers more detail:os...

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

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580 views

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r Error dim(X) must have a positive length?

I want to compute the mean of "Population" of built-in matrix state.x77. The codes are : apply(state. ... atomic vectors What is atomic vector? See Question&Answers more detail:os...

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

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386 views

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r - How to deal with spaces in column names?

I know it is preferred if variable names do not have spaces in them. I have a situation where I need ... like a lot of faffing around. See Question&Answers more detail:os...

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

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381 views

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r - Generating Random Strings

I want to generate random strings in the following way: ABCDE1234E, i.e each string contains 5 Characters, 4 ... couldn't figure it out. See Question&Answers more detail:os...

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

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318 views

1 answer

r - How to remove a level of lists from a list of lists

I have created some lists within a list and would like to be able have each sublist element to be an individual ... of the list eventually... See Question&Answers more detail:os...

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

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331 views

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r - Create data set from clicks in Shiny ggplot

I'm a Shiny novice, but I'm trying to use it in a project that I'm working on. I'd like to be ... give more info about the project if needed! See Question&Answers more detail:os...

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

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403 views

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r - Rename a sequence of variable names in data frame

I have 5 columns in a data frame and I would like to rename the variable names as Var1, Var2, Var3, Var4, Var5 ... t have to type all 100 names? See Question&Answers more detail:os...

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

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691 views

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r - How do I fill a geom_area() plot using ggplot?

I have a geom_area plot that looks like this: I want to color everything above the x-axis green and ... related to this previous question. See Question&Answers more detail:os...

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

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901 views

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r - Stacked barplot with colour gradients for each bar

I want to color a stacked barplot so that each bar has its own parent colour, with colours within each ... with 39 different gradient colours. See Question&Answers more detail:os...

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

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397 views

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r faq - Arithmetic operations on R factors

I have an R dataframe and I'm trying to subtract one column from another. I extract the columns using the ... special functions to 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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308 views

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r - How do you build a graph from a data frame using the igraph package?

Any way to build a graph ( igraph package ) from a Data Frame in R ? The data frame contains node ... > Utrecht New York -> Chicago See Question&Answers more detail:os...

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

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639 views

1 answer

r - How to order bars in faceted ggplot2 bar chart

If I want to order the bars in a ggplot2 barchart from largest to smallest, then I'd usually update the factor ... after I've done the faceting? See Question&Answers more detail:os...

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

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