Recent questions tagged R

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818 views

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r - Duplicating (and modifying) discrete axis in ggplot2

I want to duplicate the left-side Y-axis on a ggplot2 plot onto the right side, and then change the tick labels ... sec.axis = sec_axis(~.+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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312 views

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r - Barplots on a Map

I am trying to plot vertical bar plots over a map. I went through examples online but somehow not being able to. ... not find function "%:::%" See Question&Answers more detail:os...

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

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260 views

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r - Efficiently computing a linear combination of data.table columns

I have nc columns in a data.table, and nc scalars in a vector. I want to take a linear combination of ... , altering the coefficient vector, cf. See Question&Answers more detail:os...

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

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405 views

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r - Shiny: passing input$var to aes() in ggplot2

I am trying to write a Shiny app graphing the density of a variable VAL, by categories of age (AGE) ... geom_density(adjust=input$slider1)) }) See Question&Answers more detail:os...

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

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263 views

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r - Returning first row of group

I have a dataframe consisting of an ID, that is the same for each element in a group, two datetimes and the time ... 9L), 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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305 views

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r - Interpretation of ordered and non-ordered factors, vs. numerical predictors in model summary

I have fitted a model where: Y ~ A + A^2 + B + mixed.effect(C) Y is continuous A is continuous B ... sure what to do with this output... See Question&Answers more detail:os...

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

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478 views

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r - Convert 12 hour character time to 24 hour

I have a data set with the time in character format. I'm attempting to covert this from a 12 hour format to 24. I have ... 12:00 PM", "3:38 AM") See Question&Answers more detail:os...

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

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437 views

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r - Converting a u escaped Unicode string to ASCII

After reading all about iconv and Encoding, I am still confused. I am scraping the source of a web page I ... pretty=>big? 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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344 views

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r - ggplot - Multiple legends arrangement

I want to arrange mutiple legend in ggplot with multiple rows and columns. However currently, from the documentation I ... What I want is 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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459 views

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r - How to align the bars of a histogram with the x axis?

Consider this simple example library(ggplot2) dat <- data.frame(number = c(5, 10, 11 ,12,12,12,13,15,15) ... starting on the right of the label. See Question&Answers more detail:os...

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

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533 views

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r - Milliseconds in POSIXct Class

How can I parse milliseconds correctly? as.POSIXct function works as following in my environment. > as.POSIXct("2014-02 ... v3.0.2 for Windows. See Question&Answers more detail:os...

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

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318 views

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r - ggplot2, axis not showing after using theme(axis.line=element_line())

I am trying to draw this following graph using ggplot2 package, but somehow the axis won't show up. the ticks are ... wrong. Here is the chart. See Question&Answers more detail:os...

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

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397 views

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r - Convert dataframe column to 1 or 0 for "true"/"false" values and assign to dataframe

In the R cli I am able to do the following on a character column in a data frame: > data.frame$column.name [data ... arg1 <- as.integer(arg1) } See Question&Answers more detail:os...

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

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283 views

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r - Implementation of standard recycling rules

One nice feature of R which is related to its inherent vectorized nature is the recycling rule described in An ... to do it myself beforehand. See Question&Answers more detail:os...

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

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350 views

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r - Any suggestions for how I can plot mixEM type data using ggplot2

I have a sample of 1m records obtained from my original data. (For your reference, you may use this dummy data ... I can take for this problem? See Question&Answers more detail:os...

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

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470 views

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r - Plot a line chart with conditional colors depending on values

I want to plot a line chart. Depending on values it should change its color. What I found is: plot( ... a functional line with different colors? See Question&Answers more detail:os...

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

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531 views

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r - Update handsontable by editing table and/or eventReactive

I am using the rhandsontable package in a Shiny app which should have the following functionality: the data ... without the global variable? See Question&Answers more detail:os...

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

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622 views

1 answer

r - Is there a _fast_ way to run a rolling regression inside data.table?

I am running rolling regressions in R, using with the data stored in a data.table. I have a working version, ... - rollRegDT(DT, varname='x') See Question&Answers more detail:os...

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

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696 views

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r - Assign value to group based on condition in column

I have a data frame that looks like the following: > df = data.frame(group = c(1,1,1,2,2,2,3, ... have been unsuccessful with my many attempts. See Question&Answers more detail:os...

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

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664 views

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r - RStudio Shiny ERROR: there is no package called "shinydashboard"

I am trying to get http://rstudio.github.io/shinydashboard/ working on my Ubuntu 14.10 laptop. I followed ... packaged need installing as root ? See Question&Answers more detail:os...

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

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463 views

1 answer

r - Select row with most recent date by group

I have a data frame in R where the rows represent events, and one column is the date of the event. The thing the ... are in the form mm/dd/yyyy. See Question&Answers more detail:os...

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

0 votes

375 views

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r - Shift values in single column of dataframe up

Using example data like this: example=data.frame(x=c(1,2,3,4,5,6,7,8), y=c(1,2,3,4,5,6,7 ... shifting of the whole dataframe. Any ideas? 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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505 views

1 answer

r - How to color sliderbar (sliderInput)?

I tried to make different color for a few silderInput bar in R shiny. It requires css etc.I looked online and ... (ui = ui, server=server) See Question&Answers more detail:os...

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

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442 views

1 answer

r - Different breaks per facet in ggplot2 histogram

A ggplot2-challenged latticist needs help: What's the syntax to request variable per-facet breaks in a histogram? ... list(relation="free"))) See Question&Answers more detail:os...

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

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434 views

1 answer

r - How to make time difference in same units when subtracting POSIXct

I want to subtract to POSIXct. I can do this but depending on the first row (i guess?) the difference will ... to make this happen? 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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444 views

1 answer

r - Get rid of addlinespace in kable

In a knitr/Sweave report, the kable function of knitr with the option booktabs=TRUE adds a addlinespace each ... the option booktabs=TRUE? See Question&Answers more detail:os...

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

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520 views

1 answer

r caret - Saving and loading a model in R

When working with caret, how can I save a model after training, and load it later (e.g. in a different session) for prediction? See Question&Answers more detail:os...

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

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280 views

1 answer

r - Create end of the month date from a date variable

I have a large data frame with date variables, which reflect first day of the month. Is there an easy way to create ... length=1,by="+1 months") See Question&Answers more detail:os...

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

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