Recent questions tagged R

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Earlier I asked about creating a gradient of n values in base graphics (LINK). Now I'd like to create a gradient ... cex=2, col = colfunc(20)) 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 - using colClasses in fread

I don't know how to choose specific columns using the colClasses option in fread. I tried to use NULL in several ways but ... 4: 4 13 5: 5 14 See Question&Answers more detail:os...

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

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557 views

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r - How to specify "does not contain" in dplyr filter

I am quite new to R. Using the table called SE_CSVLinelist_clean, I want to extract the rows where the Variable ... of the country or province? See Question&Answers more detail:os...

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

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511 views

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r - Common main title of a figure panel compiled with par(mfrow)

I have a compilation of 4 plots drawn together with par(mfrow=c(2,2)). I would like to draw a common ... and right plots. Is this possible? 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 - Filtering observations in dplyr in combination with grepl

I am trying to work out how to filter some observations from a large dataset using dplyr and grepl . I am ... do this inside dplyr if possible. See Question&Answers more detail:os...

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

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364 views

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r - group by and filter data management using dplyr

Take a simple dataset a <- c(1,2,3,4,5,6,7,8) b <- c(1,2,2,1,2,2,2,2) c <- c(1,1, ... contain the data in green below and remove the data in red 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 capture the output of system()

This question was motivated by Rmarkdown not outputting results of system command to html file. For some reason, the ... to solve the problem. 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 - Change standard error color for geom_smooth

I'm plotting some data using geom_smooth and looking for a way to change the color of the standard error ... 's possible) is 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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287 views

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r - Rstudio calls source() when saving script

I'm using Rstudio on my Mac OS 10.9.2. It was fine until I installed the new version 98.778. Whenever I ... knows how to stop it? Appreciate 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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r - Scales = "free" works for facet_wrap but doesn't for facet_grid

I'm trying to understand why the outputs of facet_grid() and facet_wrap() are different, even though the inputs ... ). What can explain that? See Question&Answers more detail:os...

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

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316 views

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r - Count number of distinct values in a vector

I have a vector of scalar values of which I'm trying to get: "How many different values there are". For ... with at most 25 different values. 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 markdown - Table in Bookdown/Huskydown with several features (Citation, Caption, URL, PNG Figure, ...)

I would like to include a table in an R markdown document (Bookdown/Huskydown) which should meet the following ... are not included in PDF See Question&Answers more detail:os...

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

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367 views

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r - Grouped bar graph custom colours

I have the following data and wish to create a grouped bar graph like so: data<-as.data.frame(c(" ... manage to do this using scale_fill_manual. See Question&Answers more detail:os...

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

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502 views

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r - Order of dates is not chronological in ggplot2

I'm trying to make a graph to depict a population over a period of time. However, the dates are not in ... x axis are incorrect and off: 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 - Tukeys post-hoc on ggplot boxplot

Ok, so I think I'm pretty close with this, but I'm getting an error when I try to construct my box plot ... ]] : invalid subscript type 'symbol' See Question&Answers more detail:os...

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

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493 views

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r plotly how to get 3d surface with lat, long and z

I have latitude, longitude and data value for about 10 locations. Here's an example of a data frame I can ... needed for the add_surface code? See Question&Answers more detail:os...

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

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290 views

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r - Convert data frame common rows to columns

Say I have a data frame where one column is some repeating value (dates, IDs, etc). Is there a way to ... I am unsure how to transpose 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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400 views

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r - Contrast between label and background: determine if color is light or dark

I have a barplot with labels in white. Sometimes the color of background is too light and the white ... best contrast against the background. 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 - quantmod omitting tickers in getSymbols

I'm a complete beginner in R. I want to download historical data about current companies in S&P500 using ... unfortunately it's not free. See Question&Answers more detail:os...

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

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641 views

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r - RSelenium, Chrome, How to set download directory, file download error

Hello :) I'm trying to automate downloading spreadsheets from XYZ website. The code works well, goes through ... (list(key='enter')) See Question&Answers more detail:os...

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

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725 views

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r - Error in as.data.frame.default: cannot coerce class "c("reactiveExpr", "reactive")" to a data.frame in Shiny

I am having an issue with creating a data frame from a reactive in Shiny. The app allows a user to upload some ... (ui = ui, server = server) See Question&Answers more detail:os...

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

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301 views

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r - Possible issue about random number generator

I need to generate a certain number of random numbers starting from a sequence of integers and I use the following ... .1 under Ubuntu 13.10. See Question&Answers more detail:os...

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

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304 views

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r - Changing Class and Mode from Character to Numeric

Below is a sample dataset and a few lines of code that are troubling me. I can not figure out how ... "Character", summary provides little info See Question&Answers more detail:os...

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

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485 views

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r - Efficient (memory-wise) function for repeated distance matrix calculations AND chunking of extra large distance matrices

I wonder if anyone could have a look at the following code and minimal example and suggest improvements - in ... posted as an answer.. See Question&Answers more detail:os...

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

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294 views

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r - subset() a factor by its number of observation

I have a problem with subset()function. How can I subset a factor of my dataframe by its number of observation ... factor thank you so much Nik See Question&Answers more detail:os...

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

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377 views

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r - Leaflet colours for polylines

I would like to use a basic data.frame to get three polylines each of different colours I am currently ... colours would be much 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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294 views

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r - integrate a very peaked function

I am using integrate function in R to integrate a very peaked function. Say that function is a log- ... without manually choosing the interval? See Question&Answers more detail:os...

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

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446 views

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r - ordered factors in ggplot2 bar chart

I have a data frame with (to simplify) judges, movies, and ratings (ratings are on a 1 star to 5 star ... the correct ordering on the x-axis? See Question&Answers more detail:os...

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

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