Recent questions tagged R

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I have this sample code to create a new data frame 'new_data' from the existing data frame 'my_data'. ... dollar sign, a variable value? See Question&Answers more detail:os...

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

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r - Insert Layer underneath existing layers in ggplot2 object

Given an Existing plot object is it possible to add a layer UNDERNEATH an existing layer? Example, in the graph below, ... TRUE), val=rnorm(N)) See Question&Answers more detail:os...

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

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r - How to properly document a S3 method of a generic from a different package, using Roxygen?

I am writing a package that defines a new class, surveyor, and a print method for this, i.e. print.surveyor. My ... object} item{...}{ignored}} See Question&Answers more detail:os...

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

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r - Does roxygen2 automatically write NAMESPACE directives for "Imports:" packages?

tl;dr version of my question If I want to import packages, do I have to manually write import() directives ... be imported in my DESCRIPTION. See Question&Answers more detail:os...

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

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r - Creating multi column legend in ggplot

I have the following script, which suppose to create a plot with two column legend. #!/usr/bin/Rscript library( ... How can I do it correctly? See Question&Answers more detail:os...

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

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r - Namespace dependencies not required

I am trying to build an R package so reading the manual on CRAN. I could figure out that using imports ... yes ByteCompile: true OS_type : unix See Question&Answers more detail:os...

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

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r - Average values of a point dataset to a grid dataset

I am relatively new to ggplot, so please forgive me if some of my problems are really simple or not solvable at ... orange"), name = "value") See Question&Answers more detail:os...

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

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r - How to plot a heat map on a spatial map

I am new to spatial data analysis in R and would like to do something easy, I am still having difficulties. ... pointers (only UK please) Cheers See Question&Answers more detail:os...

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

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r modify and rebuild package

I'm trying to use the SemiMarkov package and I want to change one small line of code in there. I ... Any ideas/pointers gratefully appreciated. See Question&Answers more detail:os...

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

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r - Embedding a miniature plot within a plot

Does anybody know of a general way to embed plots into other plots to produce something like the mockup below? ... plot. Thanks in advance! See Question&Answers more detail:os...

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

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360 views

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r - Change color of leaflet marker

Is there anyway to change the color of leaflet marker base on the value of some variable. In the following map, ... popup = ~as.character(mag)) See Question&Answers more detail:os...

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

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249 views

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r - Calculate sum of a list of variables by group

I have a data.table with one key and about 100 numeric rows, one of which is set to key. I would like to ... , Count2, Count3) setkey(x, ID) See Question&Answers more detail:os...

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

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r - ggplot2 - Multi-group histogram with in-group proportions rather than frequency

I have three cohorts of students identified by an ExperimentCohort factor. For each student, I have a LetterGrade, ... replace = T)) 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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r - doMC vs doSNOW vs doSMP vs doMPI: why aren't the various parallel backends for 'foreach' functionally equivalent?

I've got a few test pieces of code that I've been running on various machines, always with the same results. ... from doSMP, doSNOW, and doMPI? See Question&Answers more detail:os...

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

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360 views

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r - Counting non NAs in a data frame; getting answer as a vector

Say I have the following R data.frame ZZZ: ( ZZZ <- structure(list(n = c(1, 2, NA), m = c(6, NA, ... dang-it, length doesn't operate like that. See Question&Answers more detail:os...

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

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421 views

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r - find indices of non zero elements in matrix

I want to get the indices of non zero elements in a matrix.for example X <- matrix(c(1,0,3,4,0,5), byrow ... one please tell me how to do that? See Question&Answers more detail:os...

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

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673 views

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r - ggplot geom_point() with colors based on specific, discrete values

I am trying to plot data points with three different colors for three value ranges. For example: library(ggplot2) ... out how. Any suggestions? See Question&Answers more detail:os...

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

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455 views

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r - Combine a list of matrices to a single matrix by rows

Let's say I have a list of matrices (all with the same number of columns). How would I append / combine these ... do it with a list of matrices. 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

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r - How to preserve base data frame rownames upon filtering in dplyr chain

I have the following data frame: df <- structure(list(BoneMarrow = c(30, 0, 0, 31138, 2703), Pulmonary = ... can I preserve that in dplyr chain? See Question&Answers more detail:os...

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

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451 views

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r - ggplot2 theme with no axes or grid

I am trying to make a plot with no information beyond the data. No axes; no grid; no title; just the plot ... . Could any one offer some advice? See Question&Answers more detail:os...

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

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406 views

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r - What is the difference between <NA> and NA?

I have a factor named SMOKE with levels "Y" and "N". Missing values were replaced with NA (from the initial ... >? And is there a difference? See Question&Answers more detail:os...

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

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575 views

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r - rbind error: "names do not match previous names"

As part of a larger problem (adding a ,makeUniqueIDs argument to rbind.SpatialPolygonsDataFrame for situations when the ... curious what it is. See Question&Answers more detail:os...

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

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735 views

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r - Marking specific tiles in geom_tile() / geom_raster()

Let's say I have a data.frame like this: df <- matrix( rnorm(100), nrow = 10) rownames(df) <- LETTERS[1:10 ... 93L, 94L), class = "data.frame") See Question&Answers more detail:os...

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

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313 views

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r - Vectorize a product calculation which depends on previous elements?

I'm trying to speed up/vectorize some calculations in a time series. Can I vectorize a calculation in a for ... the results of the for loop? See Question&Answers more detail:os...

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

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402 views

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r - Changing shapes used for scale_shape() in ggplot2

Suppose I have the following y <- rnorm(10) b <- as.factor(sample(1:4,10,replace=T)) qplot(1:10, y ... the shapes that are used using ggplot2? See Question&Answers more detail:os...

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

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275 views

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r - Simple frequency tables using data.table

I'm looking for a way to do simple aggregates / counts via data.table. Consider the iris data, which has ... there an elegant way around this? See Question&Answers more detail:os...

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

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323 views

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r - How does one change the levels of a factor column in a data.table

What is the correct way to change the levels of a factor column in a data.table (note: not data frame) library(data.table) ... Y 6: 6 C 6: 6 Z See Question&Answers more detail:os...

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

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384 views

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r - ggplot multiple grouping bar

I would like to know how to get 9 grouping bar plot (3x3) togheter. My CSV : data <- read.csv("http:// ... r with ggplot. Is it possible? 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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