Recent questions tagged R

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r - Calculating Time Difference between two columns

After converting factors in POSIXCT format and then applying datetime format, I want to take the difference ... <- CR_Date$pos2 - CR_Date$pos1 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 - "'w' is an unrecognized escape" in grep

I'm using grep in some projects in R (which uses a perl=TRUE flag) and for the life of me I can't figure out why R ... ""<VNW[^;]*;(dis|dat)> w" 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 - list members can be accessed with partial name? Is this a feature?

Consider this R code > l = list(key = 1) > l$k [1] 1 > l$ke [1] 1 > l[['k']] NULL > names ... troubles when you use it like a Python dict. 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 - typeof returns integer for something that is clearly a factor

Create a variable: a_variable <- c("a","b","c") Check type: typeof(a_variable) I want a factor - change ... make sense of this madness for me? See Question&Answers more detail:os...

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

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369 views

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r - ggplot2 - using two different color scales for overlayed plots

I am attempting to overlay two different plots. One is geom_boxplot, the other geom_jitter. I would like ... address this specific concern. See Question&Answers more detail:os...

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

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324 views

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r - Passing arguments to ggplot in a wrapper

I need to wrap ggplot2 into another function, and want to be able to parse variables in the same manner that ... subject is 'called' within 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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r - How do I replace the string exactly using gsub()

I have a corpus: txt = "a patterned layer within a microelectronic pattern." I would like to replace the ... microelectronic form." Many 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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272 views

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r - different colors for each bar in stacked bar graph - base graphics

I want to plot a stacked bar graph like the one attached, but I want the colors to vary between the ... either Many thanks for 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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r - Installing package - cannot open file - permission denied

I'm working in RStudio and am attempting to install the dplyr package. I have installed various other packages without ... ', but it seems odd. 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 - Overlay grid rather than draw on top of it

I have a ggplot2 graph which appears as follows: Notice that the grid or axis lines do not show through the ... y=y))+geom_point(size=20) See Question&Answers more detail:os...

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

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288 views

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r - modifying ggplot objects after creation

Is there a preferred way to modify ggplot objects after creation? For example I recommend my students to save the ... love to get 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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291 views

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r - Comparing two vectors in an if statement

I want put stop condition inside a function. The condition is that if first and second elements should match ... where error positions are ? See Question&Answers more detail:os...

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

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448 views

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r - Generating Random Dates

How can I generate a set of 12 random dates within a specific date range? I thought the following would work: ... set of numbers? Thank you See Question&Answers more detail:os...

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

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239 views

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r - use stepAIC on a list of models

I want to do stepwise regression using AIC on a list of linear models. idea is to use e a list of linear models ... data) : object 'x' not found 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 - All possible combinations of a set that sum to a target value

I have an input vector such as: weights <- seq(0, 1, by = 0.2) I would like to generate all the combinations of weights ... 0, 0, 0.2, 0) etc... See Question&Answers more detail:os...

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

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418 views

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r - Shiny - checkbox in table in shiny

i've read and implemented checkbox in table in shiny from link . but when i run in R, the output in column is <input type ... 10); }); }") } ) ) See Question&Answers more detail:os...

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

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431 views

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r - Export fitted regression splines (constructed by 'bs' or 'ns') as piecewise polynomials

Take for instance the following one-knot, degree two, spline: library(splines) library(ISLR) fit.spline ... not meaningful for interpretation. See Question&Answers more detail:os...

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

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286 views

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r - remove text after final period in string

I have a grep puzzle that's eluding me: I'd like to remove the text following the final period in a collection ... can drink any more coffee!). See Question&Answers more detail:os...

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

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254 views

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r - apply function to elements over a list

Sorry for the simple question but I can't think of a good way to take functions elements of a list of data ... is a better way in general. See Question&Answers more detail:os...

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

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386 views

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r - Rcpp function to select (and to return) a sub-dataframe

Is it possible to write a C++ function that gets an R dataFrame as input, then modifies the dataFrame (in ... ? I really appreciate your 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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401 views

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r - How to change angle of line in customized legend in ggplot2

I'm trying to add a customized legend to my ggplot but the legend boxes have lines at an angle. I want to ... I want to make them horizontal. See Question&Answers more detail:os...

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

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431 views

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r - Dealing with spaces and "weird" characters in column names with dplyr::rename()

I have table with difficult headers like this: Subject Cat Nbr Title Instruction..Mode! 1 XYZ 101 Intro I ... How might I reconcile 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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335 views

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r shiny table not rendering html

I'm creating a table using renderTable but the HTML inside the table is not rendering: This is the code snipit ... html pasted into the column. See Question&Answers more detail:os...

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

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611 views

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r - Order data inside a geom_tile

i have a data frame and i want to generate a geom_tile() plot from it , but I want the graph to be ordered not ... V2 . How this can be done ?? See Question&Answers more detail:os...

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

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386 views

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r - Changing the symbol in the legend key in ggplot2

How do I change the geom_text legend key symbol? In the example below, I'd like to change the symbol in the legend ... (range = c(2, 10)) See Question&Answers more detail:os...

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

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515 views

1 answer

r - ggplot2 draw individual ellipses but color by group

I have data that consists of several data points for a number of individuals, and each of these individuals is ... group? Thanks for the 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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375 views

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r - Existing function for seeing if a row exists in a data frame?

Is there an existing function for determining whether a row exists within a data frame? I suppose could do an ... the data frame? Thanks, Zach See Question&Answers more detail:os...

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

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347 views

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r - SI prefixes in ggplot2 axis labels

I often plot graphs in GNU R / ggplot for some measurements related to bytes. The builtin axis labels are ... boilerplate code in every graph. See Question&Answers more detail:os...

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

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