Recent questions tagged R

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r - Shade (fill or color) area under density curve by quantile

Suppose e.g. I want to shade the area under the density curve for the standard normal distribution by decile. I ... can not vary with a ribbon. See Question&Answers more detail:os...

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

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531 views

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r - How to add an external legend to ggpairs()?

I am plotting a scatterplot matrix using ggpairs. I am using the following code: # Load required packages ... would be much 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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403 views

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r - Speedup conversion of 2 million rows of date strings to POSIX.ct

I have a csv which includes about 2 million rows of date strings in the format: 2012/11/13 21:10:00 Lets ... help at all. 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 - Warning: 'Invalid .internal.selfref detected' when adding a column to a data.table returned from a function

This seems as fread bug, but I am not sure. This example reproduce my problem. I have a function where I read a data. ... fread("x 1 2 ") dt } See Question&Answers more detail:os...

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

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455 views

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r - Weighted Pearson's Correlation?

I have a 2396x34 double matrix named y wherein each row (2396) represents a separate situation consisting of 34 ... use xy.wt as weight See Question&Answers more detail:os...

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

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324 views

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r - row-by-row operations and updates in data.table

I ended up with a big data.table and I have to do operations per row. (yes... I know that this is clearly ... the apply way, is that expected ? See Question&Answers more detail:os...

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

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335 views

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r - About GForce in data.table 1.9.2

I don't know how to make great advantage of GForce in data.table 1.9.2 New optimization: GForce. Rather than ... /FALSE option? 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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748 views

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r - shinydashboard some Font Awesome Icons Not Working

When using shinydashboard I find that some icons seem to work while some don't. In the below example, the battery- ... ---- shinyApp(ui, server) See Question&Answers more detail:os...

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

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324 views

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r - Filter each column of a data.frame based on a specific value

Consider the following data frame: df <- data.frame(replicate(5,sample(1:10,10,rep=TRUE))) # X1 X2 X3 X4 ... 5435 985.3697 1026.901 1053.407 50 See Question&Answers more detail:os...

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

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338 views

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r - Group by columns and summarize a column into a list

I have a dataframe like this: sample_df<-data.frame( client=c('John', 'John','Mary','Mary'), date=c ... the data into the ideal format? See Question&Answers more detail:os...

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

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394 views

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r - Fit a no-intercept model in caret

In R, I specify a model with no intercept as follows: data(iris) lmFit <- lm(Sepal.Length ~ 0 + Petal ... ::train to exclude the intercept term? See Question&Answers more detail:os...

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

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758 views

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r - Rcpp can't find Rtools: "Error 1 occurred building shared library"

I am running into a simple setup problem with Rcpp and I cannot get it to work. I tried to follow ... something structural I am doing wrong. See Question&Answers more detail:os...

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

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342 views

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r - Combining elements of list of lists by index

Consider the following list of lists: lst = list(list(c(1,2), c(3,4)),list(c(5,6), c(7,8)), ... list contains a large number of vectors. 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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563 views

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r - Displaying image on point hover in Plotly

Plotly allows you to display text fields when hovering over a point on a scatterplot. Is it possible to instead ... push my ggplot from 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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572 views

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r - date format in tooltip of ggplotly

I am using ggplotly to show an interactive time-series plot. The x axis is in date format, yet the hover tool tip in ... "x", "y", "text")) See Question&Answers more detail:os...

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

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308 views

1 answer

r - Using filter with count

I'm trying to filter row using the count() helper. What I would like as output are all the rows where the ... why I think I should use filter. See Question&Answers more detail:os...

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

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442 views

1 answer

r - Is there a way to convert mm:ss.00 to seconds.00?

I've got some performance time data in mm:ss.00 format (i.e. 02:15.45, or 00:34.58). R is recognizing ... to make it work. 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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713 views

1 answer

r - Subscripts and superscripts "-" or "+" with ggplot2 axis labels? (ionic chemical notation)

I got this plot using the code below In my plot, I want the NO3 to have negative sign"-" as superscript ... a negative sign only without 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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500 views

1 answer

r - Is it possible to insert (add) a row to a SQLite db table using dplyr package?

I am new to the database connection capabilities of dplyr package, but I am very interested in using it for ... ? Many 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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365 views

1 answer

r - Date time conversion and extract only time

Want to change the class for Time to POSIXlt and extract only the hours minutes and seconds str(df3$Time) chr [1: ... set to POSIX or 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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692 views

1 answer

r - Find position of first value greater than X in a vector

In R: I have a vector and want to find the position of the first value that is greater than 100. See Question&Answers more detail:os...

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

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757 views

1 answer

r - In read.table(): incomplete final line found by readTableHeader

I have a CSV when I try to read.csv() that file, I get the warning warning message: In ... .com/s/h0fp0hmnjaca9ff/PING%20CONCOURS%20DONNES.csv See Question&Answers more detail:os...

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

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429 views

1 answer

r - Find columns with all missing values

I am writing a function, which needs a check on whether (and which!) column (variable) has all missing values ... of variable or column number)? See Question&Answers more detail:os...

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

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368 views

1 answer

r - How to extend `==` behavior to vectors that include NAs?

I've completely failed at searching for other r-help or Stack Overflow discussion of this specific issue. Sorry ... intuitive solution to this? See Question&Answers more detail:os...

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

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864 views

1 answer

r - Remove fill around legend key in ggplot

I would like to remove the gray rectangle around the legend. I have tried various methods but none have ... scale_color_manual(values = colors) See Question&Answers more detail:os...

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

0 votes

528 views

1 answer

r - Setting y axis breaks in ggplot

I'm having difficulty setting the breaks in my code, I've tried adding breaks=seq(0, 100, by=20) but just can't ... ,1), legend.position=c(1,1)) See Question&Answers more detail:os...

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

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851 views

1 answer

r - Plot 3D plane (true regression surface)

I'm trying to simulate some data (x1 and x2 - my explanatory variables), calculate y using a specified ... (true) model formula. 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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532 views

1 answer

r - ggplot2 draws two legends

I have almost complete the following graph, but there is one problem with it. The legend in the graph is ... the ggplot2 produces two legends? See Question&Answers more detail:os...

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

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