Recent questions tagged R

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r - ggplot: Order bars in faceted bar chart per facet

I have a dataframe in R that I want to plot in a faceted ggplot bar chart. I use this code in ggplot: ggplot(data_long, ... 1.1, 1.58, 45.47) ) See Question&Answers more detail:os...

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

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483 views

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r - Shiny Dashboard - display a dedicated "loading.." page until initial loading of the data is done

I have initial loading of data from the DB in the server.R which takes a few seconds. Until this is done, the page ... ') ) ) ) ) ) ) See Question&Answers more detail:os...

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

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272 views

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r - Applying a function to each row of a data.table

I looking for a way to efficiently apply a function to each row of data.table. Let's consider the following ... way to solve this problem? See Question&Answers more detail:os...

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

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241 views

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r - Numbers as column names of data frames

Is there a reason why R won't allow me to have a number as the column name of my dataframe? Also noticed ... that have numbers at the front. See Question&Answers more detail:os...

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

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482 views

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r - dplyr summarize with subtotals

One of the great things about pivot tables in excel is that they provide subtotals automatically. First, I would like to ... .50 9 8 8 301.00 See Question&Answers more detail:os...

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

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292 views

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r - Number format, writing 1e-5 instead of 0.00001

I've used read.table to read a file that contains numbers such as 0.00001 when I write them back with write. ... can I keep the old format? 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 - Format date as Year/Quarter

I have the following dataframe: Data <- data.frame( date = c("2001-01-01", "2001-02-01", "2001-03-01", "2001 ... ..) : Object 'y' not found Why? See Question&Answers more detail:os...

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

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342 views

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r - Generate all possible permutations (or n-tuples)

I'd like to create a data.frame of all possible permutations of 10 variables that can be either 1 or 2 2*2*2*2* ... "quick" way to do this in R? 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 - Linear model function lm() error: NA/NaN/Inf in foreign function call (arg 1)

Say I have data.frame a I use m.fit <- lm(col2 ~ col3 * col4, na.action = na.exclude) ... with variables already present it fails. See Question&Answers more detail:os...

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

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823 views

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r - Matrix expression causes error "requires numeric/complex matrix/vector arguments"?

ma=diag(3)+t(da)%*%da R Code above, error message as follows: Error in t(da) %*% da : requires numeric ... help me to figure out the error? See Question&Answers more detail:os...

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

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567 views

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r - Rounding time to nearest quarter hour

I have a vector of POSIXct values and I would like to round them to the nearest quarter hour. I don't care about the ... :21 UTC" to be "20:45" See Question&Answers more detail:os...

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

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390 views

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r - Custom legend with imported images

I'm currently creating plots in ggplot2 by importing custom images and using them as geom_points, similar to ... deals with imported images. See Question&Answers more detail:os...

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

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538 views

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r - What is an efficient method for partitioning and aggregating intervals from timestamped rows in a data frame?

From a data frame with timestamped rows (strptime results), what is the best method for aggregating statistics for ... num.intervals*period)) } See Question&Answers more detail:os...

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

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528 views

1 answer

r - Increase space between bars in ggplot

I have a bar plot: p <- ggplot(data=df, aes(x=Gene, y=FC, fill=expt, group=expt)) p <- ... the expense of overlapping with the neighbouring bar See Question&Answers more detail:os...

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

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330 views

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r - How to train a ML model in sparklyr and predict new values on another dataframe?

Consider the following example dtrain <- data_frame(text = c("Chinese Beijing Chinese", "Chinese Chinese Shanghai", ... 2 random stuff 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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486 views

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r - Add axis tick-marks on top and to the right to a ggplot?

In base graphics we can easily add tick-marks at different sides of the plot by using axis and the side ... there a similarly easy way? See Question&Answers more detail:os...

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

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446 views

1 answer

r - Plot main title in two lines

I would like to have the title for the plot in two lines, but this does not work, why? and how can I ... makes something crazy with the "bla". See Question&Answers more detail:os...

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

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337 views

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r - Generate ggplot2 boxplot with different colours for multiple groups

I'm fairly new to R and ggplot. I'm trying to generate a boxplot sorted by two variables. In my ... ,4.596686351 Autumn,M_annularis,3.530585628 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

1 answer

r - Harnessing .f list names with purrr::pmap

The following works ok: pmap_dbl(iris, ~ ..1 + ..2 + ..3 + ..4) The documentation for .l provides ... How are list names harnessed in practice? 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 - dplyr broadcasting single value per group in mutate

I am trying to do something very similar to Scale relative to a value in each group (via dplyr) ( ... incorrect length in the assignment. See Question&Answers more detail:os...

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

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270 views

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r - Set global object in Shiny

Let's say I have the following server.R file in shiny: shinyServer(function(input, output) { output$plot <- renderPlot ... What did I do wrong? See Question&Answers more detail:os...

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

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300 views

1 answer

r - Index unique values in data.table

Not sure how to formulate the question in words, but how can I create an index-column for a data.table that ... simple solution, but I'm stuck. See Question&Answers more detail:os...

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

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314 views

1 answer

r - Update a column of NAs in one data table with the value from a column in another data table

I have seen a similar post on this topic, but could not comprehend the solution. Essentially I have a ... 36067013000 777 5: 36083052304 663 See Question&Answers more detail:os...

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

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262 views

1 answer

r - Index a data frame row-by-row using column names selected from a variable

Consider the following data frame: TEST <- structure(list(Value = c(NA, NA, NA, NA, NA, NA, NA, ... a better question/description also welcome. See Question&Answers more detail:os...

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

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322 views

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r - Update/Replace Values in Dataframe with Tidyverse Join

What is the most efficient way to update/replace NAs in main dataset with (correct) values in a lookup table? This ... reprex package (v0.2.0). See Question&Answers more detail:os...

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

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823 views

1 answer

r - Shiny: Merge cells in DT::datatable

I would like to merge few rows in column in DT::datatable in shiny. Is it possible to do so? Currently I ... rows like this in DT::datatable? See Question&Answers more detail:os...

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

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378 views

1 answer

r - Merge nearest date, and related variables from a another dataframe by group

I have two dataframes each with multiple rows per ID. I need to return the closest date and related data from ... dates (not using seq.Date)? See Question&Answers more detail:os...

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

0 votes

431 views

1 answer

r - cbind: is there a way to have missing values set to NA?

Please forgive me if I missed an answer to such a simple question. I want to use cbind() to bind two columns. ... the shorter column with NA's? See Question&Answers more detail:os...

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

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