Recent questions tagged R

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r - How to add rows with 0 counts to summarised output

I have added sample data below, I have used dplyr to count on Rco and month: structure(list(Rco = structure( ... solution, I would be grateful. See Question&Answers more detail:os...

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

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270 views

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r - Updating filters in shiny app

I have an app with updating filters but seems not to work correctly I can't fix it. I want all filters ... } shinyApp(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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329 views

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r - Extra curly braces when using xtable and knitr, after specifiying size

I'm creating a R Markdown document using knitr and am running into trouble using xtable to create a table. My ... size="footnotesize" ) ``` See Question&Answers more detail:os...

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

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580 views

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r - How to select dropdown box using Rselenium?

I am interested in the stats in the English Premier League. So, I try to get data from this official site https ... give me an advice for 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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381 views

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r - How to pass multiple group_by arguments and a dynamic variable argument to a dplyr function

I am trying to pass multiple group_by arguments to a dplyr function as well as a named variable. In ... give 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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602 views

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r - ggplot2: adding lines in a loop and retaining colour mappings

When running the following two pieces of code, I unexpectedly get different results. I need to add lines in a loop as in ... [[i]]) } print(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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r - Calculate readmission rate

I'm trying to calculate both 30-days and 180-days readmission rate for patients that visited the Emergency ... is appreciated. 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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536 views

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r - Rvest not recognizing css selector

I'm trying to scrape this website: http://www.racingpost.com/greyhounds/result_home.sd#resultDay=2015-12- ... s not scraping anything. 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 - HTTP error 400 on google_elevation() call

I am using the R-package googleway to decode polylines using decode_pland subsequently getting the elevation data at ... only one that errors. 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 - Collapse a data.frame into a vector

I have a data frame like this: COL1 COL2 COL3 a h b f c g d j I would like the following output: COL a ... this can be done? Thanks in advance! See Question&Answers more detail:os...

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

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528 views

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r - Remove a list of whole words that may contain special chars from a character vector without matching parts of words

I have a list of words in R as shown below: myList <- c("at","ax","CL","OZ","Gm","Kg","C100","-1 ... this is not helping me. What I should do?? See Question&Answers more detail:os...

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

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753 views

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r - Remove the columns with the colsums=0

I have a matrix which its elements are 0, 1,2,NA! I want to remove the columns which their colsums are equal ... ", "X1.111144756"))) 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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618 views

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r - Changing line color in ggplot based on slope

I have the following code which plots points and draw a line between them. ggplot (data = subset(df, vowel == ... that it's grouped by number. See Question&Answers more detail:os...

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

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397 views

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r - Efficient way to Fill Time-Series per group

I was looking for a way to fill a time series data set by time, per group. The very very inefficient way I was ... 24L ), 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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441 views

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r - number of unique values sparklyr

the following example describes how you can't calculate the number of distinct values without aggregating the ... supported by this database See Question&Answers more detail:os...

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

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599 views

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r - Is it possible to use more than 2 colors in the color_tile function?

I have a dataframe column that I'm currently formatting using the formattable::color_tile function (below): ... formatting functions in R? See Question&Answers more detail:os...

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

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408 views

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r - Looping over combinations of regression model terms

I'm running a regression in the form reg=lm(y ~ x1+x2+x3+z1,data=mydata) In the place of the last ... looping through the list of z-variables? 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 - Why does nls function not work in ggplot2

I thought the nls method had been working in the previous versions of ggplot2: df22 <- data.frame(Date = as.Date(c ... Why does it 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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567 views

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r - ggplot2: Change factor order in legend

I have a a line graph and I want to reorder the way in which the factors appear in the legend. I have tried ... t change it. Any ideas? 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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457 views

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r - How to force the x-axis tick marks to appear at the end of bar in heatmap graph?

I created a simple heatmap graph with ggplot2 but I need to force the x-axis tick marks to appear at the ... the bars instead of their centers 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 - Shiny - custom warning/error messages?

How can I print a custom warning/ error message when the required data is empty? for instance, in my server.R, ... no data is found. Any ideas? See Question&Answers more detail:os...

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

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536 views

1 answer

r - Calculating the distance between points in different data frames

I am trying to find the distance between points in two different data frames given that they have the same ... would be appreciated as well. See Question&Answers more detail:os...

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

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305 views

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r - All combinations of all sizes?

There are thousands of results on SO when I search for "vector combinations in R" but I can't find the ... be able to generalize. 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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539 views

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r - data.table: Sum by all existing combinations in table

I have a data.table out like this (in reality it is much larger): out <- code weights group 1: 2 0.387 ... . Any idea how I could achieve 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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332 views

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r - removing everything after first 'backslash' in a string

I have a vector like below vec <- c("abcedwwww", "nmnggg", "rerqqqfdf"......) I want to remove ... csv() they are replaced by backslashes. See Question&Answers more detail:os...

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

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408 views

1 answer

r - Lattice plots in for loop - empty images created

I want to produce several lattice plots in a for loop, but it does create empty images!!! for (f in unique( ... .frame(x, country, type, month) See Question&Answers more detail:os...

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

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723 views

1 answer

r - How to add a legend for the secondary axis ggplot

I am trying to add a legend for the secondary axis in the following code library(ggplot2) library(dplyr) library( ... the line graph as well. 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

1 answer

r - p-values of correlation coefficients

I am using R and have a question on correlations. A<-data.frame(A1=c(1,2,3,4,5),B1=c(6,7,8,9,10),C1 ... " package in R to do this but unable to. See Question&Answers more detail:os...

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

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