Recent questions tagged R

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I've already tried searching but I've found nothing similar. I have a dataset containing temperatures, and another ... me? 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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r - Cumulative sum by group in sqldf?

I have a data frame with 3 variables: place, time, and value (P, T, X). I want to create a fourth ... but that doesn't all cumsum either. 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 pass a list of columns to data.table where some are predetermined

Pass character vectors and column names to data.table as a list of columns? I want to be able to produce a ... do I preserve the column titles? 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 - tidyr::spread() with multiple keys and values

I assume this has been asked multiple times but I couldn't find the proper words to find a workable ... time and each measurement variable. 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 - different possible combinations of variables for a generalized linear model

Is there a method in R to run a GLM for each of the different variables in a data frame with a ... variables act as the best predictors? 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 check if a number is a positive natural number?

I'd appreciate any idea on how to do it, so we can compare them with each other. Here is one to start out with ... 0 && identical(round(x), x) } 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 - as.matrix on a distance object is extremely slow; how to make it faster?

I found an R package Rlof which uses multithreading to calculate distance matrices and it does a wonderful job. However, ... A = as.matrix(dA)) 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 - mixed combinations / permutations from different sets

This Q & A is motivated by How to build permutation with some conditions in R. So far, there ... combinations and optionally all permutations? 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 - Creating new column combining info in two columns, alphabetically

I have a dataset of football teams that looks like this: Home_team Away_team Home_score Away_score Arsenal Chelsea 1 ... location of the game. 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 - Plotly's fillcolor defaults to half-transparency, want no-transparency

I am trying to build a map in R using plotly. I will share the code required to build the dataframe in a ... plot.ly/r/county-level-choropleth/. See Question&Answers more detail:os...

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

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841 views

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r - Averaging daily data into weekly data

I am wondering if there is a way to average daily data into weekly data. The dataframe that I call CADaily looks ... ? Thank you for your help. 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 - ShinyApp Google Login

I have a shinyapp and I want to enable certain features to the members who login to the app using google login. ... of the hassles Thank you SD See Question&Answers more detail:os...

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

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996 views

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r - Update content on server only after I click action button in Shiny

I'm having problems with reactive output in shiny server in R. What I want to do is create a plotly ... / Tab is called Minimal_Example 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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r - Find nearest points of latitude and longitude from different data sets with different length

I have two data set of different stations. The data are basically data.frames with coordinates, longitudes and latitudes ... ?? 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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870 views

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r - For each row, get column names where data is equal to a certain value

I have a data frame (df) with 7 rows and 4 columns (named c1, c2, c3, c4): c1 c2 c3 c4 Yes No Yes No ... df)[apply(df,1,which(LETTERS="Unfit"))] See Question&Answers more detail:os...

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

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902 views

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r - Extend an irregular sequence and add zeros to missing values

I have a data frame with a sequence in 'col1' and values in 'col2': col1 col2 2 0.02 5 0.12 9 0.91 13 1.13 ... 13 1.13 How can I do this 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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r - How to calculate the area of ellipse drawn by ggplot2?

In ggplot2, after I drawing the ellipse plot using stat_ellipse, is there any way to calculate the area of ... + geom_point()+ stat_ellipse() 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 - Error in `contrasts<-`(`*tmp*`, value = contr.funs[1 + isOF[nn]]): contrasts can be applied only to factors with 2 or more levels

I'm using the R caret package to generate a model. I'm using PCA in the pre-process for dimensionality reduction and then ... : 3.000 Max. :99.000 try(na.fail(credit)) glmFit...

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

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953 views

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r - Get tick break positions in ggplot

I have created a function for creating a barchart using ggplot. In my figure I want to overlay the plot with ... ), colour = 'white') See Question&Answers more detail:os...

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

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836 views

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r - Find max per group and return another column

Given the following test matrix: testMatrix <- matrix( c(1,1,2,10,20,30,300,100,200,"A","B","C"), 3, 4) ... [,1], groupNames[,1] ), 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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901 views

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r - ggplot2: highlight chart area

I am working with some time series data and would like to highlight chart area whenever certain conditions ... ggplot2 for conditional plotting? See Question&Answers more detail:os...

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

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1.2k views

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r - max.col with NA removal

I'm looking to find the columns of matrix row-maxima while ignoring NAs. E.g., set.seed(1) a <- matrix(runif(15), ... like: [1] 2 2 3 1 NA See Question&Answers more detail:os...

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

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807 views

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r - Using sample() with sample space size = 1

I have a list of dates that I wish to sample from. Sometimes the sample space will just be a single date ... objects of length one as numeric? 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 - Cut and labels/breaks length conflict

I am working with the cut function to prep data for a barplot histogram but keep running into a seeming inconsistency between ... .0f",sq[-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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952 views

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r - How to convert characters into ASCII code?

I need to translate a string of characters, for example "Hello", into a string of numbers which is the ASCII numeric ... , 101, 108, 108, 111) See Question&Answers more detail:os...

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

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973 views

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r - Using glmer for logistic regression, how to verify response reference

My question is quite simple, but I've been unable to find a clear answer in either R manuals or online searching. Is ... 0's and 1's. 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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817 views

1 answer

r - How to split a dataframe column by the first instance of a character in its values

I have a dataframe (or vector?) x <- data.frame(a=c("A_B_D", "B_C")) I want to split the vector in ... of gsub, but couldnt come to a solution. See Question&Answers more detail:os...

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

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812 views

1 answer

r - How to get all possible combinations of n number of data set?

I have 9 data sets, each having 115 rows and 742 columns and each data set contains results from a ... solving this will be 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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