Recent questions tagged R

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r - Split data.frame row into multiple rows based on commas

I am attempting to split a row in a data.frame based on the character sequence ", ". Here's an example: mydat ... 4 2 name5 5 3 Any suggestions? See Question&Answers more detail:os...

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

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755 views

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r - How to specify certificate, key and root certificate with httr for certificate based authentication?

I am trying to access data using httr library from server which expects certificate based authentication. I have ... --cacert) of curl. See Question&Answers more detail:os...

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

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3.5k views

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r - Error in model.frame.default(Terms, newdata, na.action = na.action, xlev = object$xlevels): factor X has new levels

I did a logistic regression: EW <- glm(everwrk~age_p + r_maritl, data = NH11, family = "binomial") Moreover, I want to ... 2 2 8 8 8 2 ... See Question&Answers more detail:os...

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

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406 views

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r - Assigning/Referencing a column name in data.table dynamically (in i, j and by)

A) Instead of this (where cars <- data.table(cars)) cars[ , .(`Totals:`=.N), by=speed] I need this ... = .N * strFactor), by=strBy] See Question&Answers more detail:os...

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

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608 views

1 answer

r - change position of tick marks of a single graph, using ggplot2

Anybody knows how to draw the X-axis tickmarks at the top of a single plot in R, using ggplot2? I ve ... success. Thanks in advance. Agus See Question&Answers more detail:os...

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

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407 views

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r - How to create a rank variable under certain conditions?

My data contain time variable and chosen brand variable as below. time indicates the shopping time and ... , stringsAsFactors = FALSE) See Question&Answers more detail:os...

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

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637 views

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r - shiny sliderInput from max to min

Is it possible to make a sliderInput that shows the values in decreasing order (from left to right; eg. 5 4 3 ... function(input,output) {} ) ) See Question&Answers more detail:os...

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

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577 views

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r - Cumulative sums over run lengths. Can this loop be vectorized?

I have a data frame on which I calculate a run length encoding for a specific column. The values of the column, ... to do it without the loop. See Question&Answers more detail:os...

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

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451 views

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r - Pass arguments to function

I have an understanding problem with passing arguments to a function in R. In the following example, I retrieve a ... (a) # returns: NULL See Question&Answers more detail:os...

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

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566 views

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r - loading dplyr after plyr is causing issues

Test Case: library(dplyr) library(plyr) library(dplyr) mtcars%>%rename(x=gear) This gives error. Any help would be greatly 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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470 views

1 answer

r - adding a layer to the current plot without creating a new one in ggplot2

In basic R you can add layers to the existing plot without creating a new one. df <- data.frame(x = ... shiny causes blinks in its animations. See Question&Answers more detail:os...

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

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451 views

1 answer

r - How to define a function in dplyr?

I created a simple pivot table in the dplyr package in R. Here is my working example: library(dplyr) mean_mpg <- ... not work. What should I do? See Question&Answers more detail:os...

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

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552 views

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r - organize text on geom_point using geom_text

I have a line plot with some time points that are hard to distinguish by the coloring alone and I would therefore like ... =-.1, angle = 00) See Question&Answers more detail:os...

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

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1.0k views

1 answer

r - tidyverse not loaded, it says "namespace ‘vctrs’ 0.2.0 is already loaded, but >= 0.2.1 is required"

I keep encountering problems with installing tidyverse package, which preventing me from implementing many text processing ... version 3.6.2 See Question&Answers more detail:os...

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

0 votes

475 views

1 answer

r - na.locf and inverse.rle in Rcpp

I wanted to check if there is any pre-existing trick for na.locf (from zoo package), rle and inverse.rle in RCpp ... the loop) OR a faster way? See Question&Answers more detail:os...

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

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961 views

1 answer

r - Error in xj[i] : invalid subscript type 'list'

I tried to split the data(bank) into training data and test data. But I somehow got an error below.How ... arguments must have the same length See Question&Answers more detail:os...

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

0 votes

453 views

1 answer

r - Change the color of a ggplot geom a posteriori (after having specified another color)

A function from a package returns a ggplot with preset colours that I'd like to change. For example, let's ... of a geom a posteriori? 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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741 views

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r - Error - Error in lognet(x, is.sparse, ix, jx, y, weights, offset, alpha, nobs)= etc

Getting an error when using glmnet in Caret Example below Load Libraries library(dplyr) library(caret) library(C50) ... anyone know the answer? See Question&Answers more detail:os...

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

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520 views

1 answer

r - How to get covariance matrix for random effects (BLUPs/conditional modes) from lme4

So, I've fitted a linear mixed model with two random intercepts in R: Y = X beta + Z b + e_i, where ... ? Or do you have any other suggestions? See Question&Answers more detail:os...

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

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488 views

1 answer

r - Set standard legend key size with long label names ggplot

I am building a ggplot visualization in which some fill aesthetics have very long variable names, while other ... the problem. Any thoughts? See Question&Answers more detail:os...

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

0 votes

544 views

1 answer

r - Calculate differences between rows faster than a for loop?

I have a data set that looks like this: ID | DATE | SCORE ------------------------- 123 | ... solution besides a FOR loop.) Thanks in advance! See Question&Answers more detail:os...

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

0 votes

627 views

1 answer

r - Clear plotly click event

I'm trying to use plotly click events in the context of a shiny app. Following the official demo I'm using this ... doesn't seem to do it. See Question&Answers more detail:os...

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

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542 views

1 answer

r - Apply a summarise condition to a range of columns when using dplyr group_by?

Suppose we want to group_by() and summarise a massive data.frame with very many columns, but that there are ... actual use case has ~hundreds. See Question&Answers more detail:os...

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

0 votes

542 views

1 answer

r - Error in heatmap.2 (gplots)

Ive moved on to a new server and Installed R version 3.0 on it. (gplots library was no longer available for 2 ... did not result in the error. See Question&Answers more detail:os...

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

0 votes

549 views

1 answer

r - Using the result of summarise (dplyr) to mutate the original dataframe

I have a rather big dataframe with a column of POSIXct datetimes (~10yr of hourly data). I would flag all the ... <= limits$maxDOY) ] = TRUE See Question&Answers more detail:os...

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

0 votes

901 views

1 answer

r - Different y-Axis Labels facet_grid and sizes

I'am stuck with the following problem: I want to display different characteristics of a timeseries in one plot ... in something like this: See Question&Answers more detail:os...

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

0 votes

535 views

1 answer

r - Error trying to read a PDF using readPDF from the tm package

(Windows 7 / R version 3.0.1) Below the commands and the resulting error: > library(tm) > pdf < ... files but none is named pdfinfo8d437bd65d9. See Question&Answers more detail:os...

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

0 votes

735 views

1 answer

r - Creating a stacked bar chart centered on zero using ggplot

I'm currently working with a stacked horizontal bar graph chart using ggplot2 in R. This is my R code: ggplot( ... make two graphs back to back? See Question&Answers more detail:os...

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

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