Recent questions tagged R

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r - Can ggplot2 control point size and line size (lineweight) separately in one legend?

An example using ggplot2 to graph groups of data points and lines connecting the means for each group, mapped with the ... a way to do 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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r - Merge dataframes, different lengths

I want to add variables from dat2: concreteness familiarity typicality amoeba 3.60 1.30 1.71 bacterium 3.82 3.48 2. ... ), 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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558 views

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r - Sort legend in ggplot2

I have produced a stacked percent barplot from the following data, which is in a csv file, ,ONE,TWO,THREE 1, ... the items in the legend? 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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620 views

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r - Splitting a data frame into equal parts

I have an example data frame: df <- data.frame(x = 1:112, y = runif(112)) Is there a way to print a list ... , etc. up until the end (111:112)? See Question&Answers more detail:os...

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

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349 views

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r - Is it possible to get the number of rows in a CSV file without opening it?

I have a CSV file of size ~1 GB, and as my laptop is of basic configuration, I'm not able to open the file in ... it, if at all I can do it? See Question&Answers more detail:os...

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

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587 views

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r - Get row and column indices of matches using `which()`

Say I have some matrix, for example: m = matrix(rep(c(0, 0, 1), 4), nrow = 4) m [,1] [,2] [,3] [1,] 0 0 1 [2,] ... b a d 3 2 1 4 e f g g 1 2 3 3 See Question&Answers more detail:os...

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

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479 views

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r - extracting value based on another column

I have a function that spits out a matrix, such as: x freq 1 FALSE 40 2 TRUE 6 but when there are no FALSE ... I can do that? 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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781 views

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r - Get width of plot area in ggplot2

Is there any way to get the width of the plot area in the grid window? It grows or shrinks, for instance, if ... grid.arrange(p1, p2, ncol=2) 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 repeat the Grubbs test and flag the outliers

I am wanting to apply the Grubbs test to a set of data repeatedly until it ceases to find outliers. I want the ... No 63.05 No 57.53 No See Question&Answers more detail:os...

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

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581 views

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r - How to position strip labels in facet_wrap like in facet_grid

I would like to remove the redundancy of strip labels when using facet_wrap() and faceting with two variables ... was addressed before). See Question&Answers more detail:os...

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

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642 views

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r - Reverse datetime (POSIXct data) axis in ggplot

I'm trying to create a plot of POSIXct times using ggplot, and would like to reverse the axis, but am ... way to reverse the datetime axis? See Question&Answers more detail:os...

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

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420 views

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r - Combining S4 and S3 methods in a single function

What is a good way of defining a general purpose function which should have implementations for both S3 and S4 ... better ways to do 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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490 views

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r - How to annotate a reference line at the same angle as the reference line itself?

I need to find a way to annotate a reference line at the same angle as the reference line itself. The following ... it in R? 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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960 views

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r - Fitting with ggplot2, geom_smooth and nls

I am trying to fit data on an exponential decay function (RC like system) with equation: My data are on the ... have one fit per Exp level. See Question&Answers more detail:os...

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

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700 views

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r - ggplot embedded fonts in pdf

I have been using the following guide to export plots made with ggplotto pdf: plot fonts guide It raises the ... ") embed_fonts("Test.pdf") See Question&Answers more detail:os...

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

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426 views

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r - stat_contour not able to generate contour lines

I need to add lines via stat_contour() to my ggplot/ggplot2-plot. Unfortunately, I can not give you the real ... ou tint the error message. See Question&Answers more detail:os...

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

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394 views

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r - How to add braces to a graph?

I want to make the following graph in R: How can I plot those horizontal braces? See Question&Answers more detail:os...

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

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462 views

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r - How to use Dplyr's Summarize and which() to lookup min/max values

I have the following data: Name <- c("Sam", "Sarah", "Jim", "Fred", "James", "Sally", "Andrew", " ... this isn't clear and 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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518 views

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r - Finding the index inside a vector satisfying a condition

I am looking for a condition which will return the index of a vector satisfying a condition. For example- I have ... 1 instead of 3. Please help See Question&Answers more detail:os...

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

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1.2k views

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r - ggplot scale color gradient to range outside of data range

I am looking for a way to stretch a color gradient between two values and label the legend, regardless of the range of data ... <- c(-3, 0, 3) See Question&Answers more detail:os...

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

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353 views

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r - What methods can we use to reshape VERY large data sets?

When due to very large data calculations will take a long time and, hence, we don't want them to crash, it would be ... (df1, id, y), times=3L) See Question&Answers more detail:os...

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

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724 views

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r - plot.new has not been called yet

Why does this happen? plot(x,y) yx.lm <- lm(y ~ x) lines(x, predict(yx.lm), col="red") Error in plot. ... ..) : plot.new has not been called yet See Question&Answers more detail:os...

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

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550 views

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r - How to use empty space produced by facet_wrap?

I have a faceted plot that forms an n x m grid. By design, the last (bottom-right) cell is always empty, so I'd like ... 75, 0.275, 0.45, 0.45)) See Question&Answers more detail:os...

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

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511 views

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r - Specifying ggplot2 panel width

I have two ggplots on the same page, and I'd like their panels to be the same width. Some sample data ... appropriate in my real-world example.) See Question&Answers more detail:os...

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

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513 views

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r - Remove extra space and ring at the edge of a polar plot

I have a polar plot in ggplot2 that I am getting pretty close in finishing (fairly simple plot). I have been ... Detected', 'Detected')) plot See Question&Answers more detail:os...

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

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536 views

1 answer

r - Make a rectangular legend, with rows and columns labeled, in grid

I've got a ggplot where I'm mapping factors to both fill and alpha, like this: set.seed(47) the_data <- data. ... put it on top of my plot? See Question&Answers more detail:os...

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

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473 views

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r - An NA in subsetting a data.frame does something unexpected

Consider the following code. When you don't explicitly test for NA in your condition, that code will fail at some ... ever be good or useful? See Question&Answers more detail:os...

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

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555 views

1 answer

r - How achieve identical facet sizes and scales in several multi-facet ggplot2 graphics?

I have a series of ggplot2 graphics with a constant number of horizontal but differing number of vertical facets. I would ... 297, units = "mm") See Question&Answers more detail:os...

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

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