Recent questions tagged R

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r - Sorting of categorical variables in ggplot

Good day, I wish to produce a graphic using ggplot2, but not using its default sorting of the categorical variable ... last line does not work. See Question&Answers more detail:os...

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

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702 views

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r - Generating a very large matrix of string combinations using combn() and bigmemory package

I have a vector x of 1,344 unique strings. I want to generate a matrix that gives me all possible groups ... ways of achieving this? 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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675 views

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r - How to extract values from rasterstack with xy coordinates?

I have a rasterstack (5 raster layers) that actually is a time series raster. r <- raster(nrow=20, ncol=200) ... and plot a time series curve? See Question&Answers more detail:os...

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

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442 views

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r - Fonts for Rmarkdown document

Here is a minimal working example. --- date : 2018-May-26 output: pdf_document title: "Testing Rmarkdown" --- `` ... and how can I change them ? 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 - knitr - Figure captions above

Is there a way, in knitr to move the fig.cap above the figure? I need them above so that when ... outside knitr chunks whenever 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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417 views

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r - parRF on caret not working for more than one core

parRF from the caret R package is not working for me with more than one core, which is quite ironic, given the ... 2 stringr_0.6.2 tools_3.0.2 See Question&Answers more detail:os...

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

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447 views

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r - Transfer values from one dataframe to another

I have two data frames. The first looks like this: value <- seq(1, 100, length.out=20) df1 <- data.frame(id=as ... F) Is there a 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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692 views

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r - How to convert by the minute data to hourly average data

I have one week of data with a reading every 5 seconds. An example of data is below. 9/1/2012 00:00 ... the hourly average for each day. See Question&Answers more detail:os...

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

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629 views

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r - topoplot in ggplot2 – 2D visualisation of e.g. EEG data

Can ggplot2 be used to produce a so-called topoplot (often used in neuroscience)? Sample data: label x y signal 1 R3 0 ... (0, 1, length = 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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436 views

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r - How to install RHadoop packages (Rmr, Rhdfs, Rhbase)?

Actually I am trying my level best to integrate with R, but I got this error. packages rmr', rJava , ... have followed this link to integrate. See Question&Answers more detail:os...

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

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371 views

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r - Conditionally apply pipeline step depending on external value

Given the dplyr workflow: require(dplyr) mtcars %>% tibble::rownames_to_column(var = "model") %>% filter(grepl ... is being evaluated or not 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 - Apply tidyr::separate over multiple columns

I would like to iterate over columns in a dataframe and split them into the based on a separator. I am ... multiple columns in a data frame? See Question&Answers more detail:os...

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

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824 views

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r - How to edit and save changes made on Shiny dataTable using DT package

I would like to edit the table and save the changes to the example below. Here's what I have so far. ... overwrite the banking.df? Thank you. See Question&Answers more detail:os...

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

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343 views

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r - custom fill color in ggvis (and other options)

I'm trying to use ggvis to create a NFL strength-of-schedule chart for the 2014 season. The data comes from ... padding = 0, points = FALSE) 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 - Returning a vector of class POSIXct with vapply

I have list of dates having POSIXct class as follows (just a minimum working example): L <- list(as.POSIXct ... values into a POSIXct vector? See Question&Answers more detail:os...

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

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554 views

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r - igraph axes xlim ylim plot incorrectly

if I make a graph g: g <- read.table(text=" A B W 1 55 3 2 55 5 3 99 6 ",header= ... another package that would have the same functionality? See Question&Answers more detail:os...

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

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328 views

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r - join matching columns in a data.frame or data.table

I have the following data.frames: a <- data.frame(id = 1:3, v1 = c('a', NA, NA), v2 = c(NA, 'b', 'c')) b ... B <- data.table(b, key = 'id') A[B] See Question&Answers more detail:os...

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

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368 views

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r - Reshaping several variables wide with cast

I have a data.frame that looks like this: > head(ff.df) .id pio caremgmt prev price surveyNum 1 1 2 2 1 2 1 ... , -72L), class = "data.frame") See Question&Answers more detail:os...

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

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351 views

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r - Can GGPLOT make 2D summaries of data?

I wish to plot mean (or other function) of reaction time as a function of the location of the target in the x ... and then plot that? Thank you. See Question&Answers more detail:os...

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

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540 views

1 answer

r - Alternate geom_text position with hjust

I'm plotting a stacked bar graph and use geom_text to insert the value of each stack. The difficulty I'm facing is ... AsIs 89.6 519.0 519.0 See Question&Answers more detail:os...

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

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475 views

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r - Keep same order as in data files when using ggplot

I am using the attached data below to produce boxplot. Datalink https://www.dropbox.com/s/dt1nxnkhq90nea4/GTAP_Sims. ... for that? Thanks a lot See Question&Answers more detail:os...

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

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413 views

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r - How to determine the geom type of each layer of a ggplot2 object?

As part of an effort to remove a specific geom from a plot I've already created (SO link ... ggplot2_object$layers <- layers ggplot2_object } See Question&Answers more detail:os...

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

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635 views

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r - ggplot2 find number of counts in histogram maximum

I have a short R script which plots a few histograms using ggplot2. How can I automatically set the ymax limit in the ... ), limits = c(0,140)) See Question&Answers more detail:os...

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

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411 views

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r - Create a variable length `alist()`

In this Answer, an alist() is proposed as an easy means of creating a list with empty elements. A use ... be filled in later where required? See Question&Answers more detail:os...

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

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516 views

1 answer

r - calculating minimum distance between a point and the coast

I am trying to get the minimum distance between a given point and the coast. My example is the distance of ... I convert that to kilometers? See Question&Answers more detail:os...

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

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613 views

1 answer

r - How to add a non-overlapping legend to associate colors with categories in pairs()?

I am using pairs(iris) to show possible relationships among the four variables (Sepal.length, Sepal.width, ... the data presentation itself? See Question&Answers more detail:os...

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

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351 views

1 answer

r - Reading numbers as strings

I am new at R programming and I want to read a text file in R. One of the columns, lets say column 7 is ... in table: 1 Number of factors: 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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430 views

1 answer

r - Create all possible combiations of 0,1, or 2 "1"s of a binary vector of length n

I would like to create all possible combinations of a binary vector of length n > 2 with the property that the maximum number ... {z[k]=1;z}))) See Question&Answers more detail:os...

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

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