Recent questions tagged R

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r - Create unique identifier from the interchangeable combination of two variables

I need to create a unique identifier from the combination of two variables in a data frame. Consider the following data frame: ... c("c", "a"). See Question&Answers more detail:os...

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

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412 views

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r - geom_col is assigning the wrong independent variable

I have a simple two variable data frame with a third variable acting as a factor DF <- data.frame(Depth = ... , not horizontal?? Thanks, Jeremy 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 - how to find index of match between two set of data frame

Two data frame with one being my reference df1<- structure(list(V1 = structure(c(2L, 14L, 8L, 12L, 1L, 3L, ... - #5 Bangalore - #6 Mumbai 16 See Question&Answers more detail:os...

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

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329 views

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r - Force error bars to be in the middle of bar

I'm using R and ggplot2 to plot a pretty basic bar graph with error bars, but I'm having trouble forcing them ... ... http://imgur.com/H2DRvqg See Question&Answers more detail:os...

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

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285 views

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r - Subsetting a data.frame given some criteria

How do I return only the Heights which satisfy an Age criterion in R? i.e Age Height 1 0.5 1 0.6 1 0.7 ... in R would allow me 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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298 views

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r - How to remove rows that have only 1 combination for a given ID

I have a dataframe like this ID <- c("A","A","A","B","B","C","C") Measurement <- c (" ... Please help with some inputs on how to solve 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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458 views

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r - Subset data frame using row names

I have a data frame like this: x1 x2 x3 271 3 5 2 553 2 4 1 563 2 5 3 When I try to select a row based ... the row names (e.g. 271, 553, 563)? See Question&Answers more detail:os...

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

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284 views

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r - Plotting multiple data in a data frame at fixed column intervals with corresponding legend in one single plot

I have a data frame x3 of 30 columns generated using the following codes, I would like to plot in a ... manner along with 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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r - Shiny app: nothing changes when clicking on action button

Building on multiple stackoverflow questions, I tried to build this app which contains two action buttons the first one shows a ... ()) }) }) ) See Question&Answers more detail:os...

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

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265 views

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r - Convert data frame to list

I am trying to go from a data frame to a list structure in R (and I know technically a data frame is a ... lapply and did not make any progress. See Question&Answers more detail:os...

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

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441 views

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r - Error: "there is no package called ..." and trying to use install.packages to solve it

The R studio I have in my university computer gives me an error when I try to download different packages ... package using install.packages? 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 - given value of matrix, getting it's coordinate

I have matrix, I want to write a function, get the element of matrix and return me the coordinate of number inside of ... > 11 > row 3, col 1 See Question&Answers more detail:os...

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

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342 views

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r - Unique string combinations

I have a vector which contains certain words colors<-c("Yellow","Blue","Red") > colors [1] "Yellow" "Blue" ... as BlueYellow. How do I 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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276 views

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r - Data Table - Select Value of Column by Name From Another Column

I have a data table with a number of columns containing values. I have another column which defines which one of those ... 3: 1 2 value.1 1 See Question&Answers more detail:os...

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

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329 views

1 answer

r - Return a matrix with `ifelse`

I have two matrices: mat <- matrix(1:6, 2, 3) mat2 <- matrix(1:2, 2, 3) and a parameter a <- 1 using ifelse ... new <- ifelse(a == 1, mat, mat2) See Question&Answers more detail:os...

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

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287 views

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r - How to add only missing Dates in Dataframe

I have below mentioned data frame: Date Val1 Val2 2018-04-01 125 0.05 2018-04-03 458 2.99 2018-04-05 354 1.25 I ... -05 354 1.25 2018-04-06 0 0 See Question&Answers more detail:os...

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

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382 views

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r - Make a file writable in order to add new packages

I use Rstudio and try to add new packages through command console. It fails to install it for this reason ... I make this file writable? See Question&Answers more detail:os...

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

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362 views

1 answer

r - apply() not working when checking column class in a data.frame

I have a dataframe. I want to inspect the class of each column. x1 = rep(1:4, times=5) x2 = factor(rep( ... column? or What I should do? 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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1.1k views

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r - How to italicize one category in a legend in ggplot2

For my legend in ggplot2 I have 2 categories, how do I italicize only 1 category and not the other? As an ... the reprex package (v0.3.0) See Question&Answers more detail:os...

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

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549 views

1 answer

r - Best practice: Should I try to change to UTF-8 as locale or is it safe to leave it as is?

I try to set my default encoding to UTF-8; up to now without success: a <- "Hallo" b <- "??fd" ... this issue? Is there any best practice? See Question&Answers more detail:os...

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

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638 views

1 answer

r - Using the geosphere distm function on a data.table to calculate distances

I've created a data.table in that has 6 columns. My data.table has a columns compairing two ... function requires vectors as parameters. See Question&Answers more detail:os...

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

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344 views

1 answer

r - Using SuperLU sparse solver with RcppArmadillo

I am trying to use the SparseLU solver from armadillo (http://arma.sourceforge.net/docs.html#spsolve) through ... 'm on Windows 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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384 views

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r - Move NAs to the end of each column in a data frame

I have such a data frame: df <- structure(list(a = c(NA, NA, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L), b ... am stuck on where to start.. Can you 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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524 views

1 answer

r - Spacing between boxplots in ggplot2

I have been working with ggplot2 a lot over the past few weeks and was wondering if anyone could help me solve this ... I am just not seeing it. See Question&Answers more detail:os...

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

0 votes

751 views

1 answer

r - How to filter data without losing NA rows using dplyr

How to subset data in R without losing NA rows? The post above subsets using logical indexing. Is there a ... appreciate any help. Thank you! See Question&Answers more detail:os...

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

0 votes

510 views

1 answer

r - Different axis limits per facet in ggplot2

I am trying to make a faceted plot in ggplot2 where the y axis shows labels and the x axis should show line ... it doesn't change the plot. See Question&Answers more detail:os...

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

0 votes

518 views

1 answer

r - Correct number of decimal places reading in a .csv

I have a .csv where one of the columns contains numbers that have 7 decimal places, e.g.: -117.2403266. ... t say anything about decimal places. See Question&Answers more detail:os...

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

0 votes

294 views

1 answer

r - dplyr piping data - difference between `.` and `.x`

df1 <- data.frame( " " = c(" ", "Part Number 1", "Part Number 2", "Part Number 3"), Julie = c("Measurement 1 ... 1:2, ) : 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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