Recent questions tagged R

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r - How can I make ShinyApp to use environmental variables when deployed on the web?

For hours I've been struggling. My Shiny App is supposed to display some variables that I have in my R environment. It ... ), id = "theTab")) ) See Question&Answers more detail:os...

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

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456 views

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r - Converting char to date time

In a data.frame, I have a date time stamp in the form: head(x$time) [1] "Thu Oct 11 22:18:02 2012" ... format="%H:%M") x$minute<-minute(x$time) 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 - Align grid() to plot ticks

When adding ticks to a plot (more ticks than default), how does one get the grid() to align the ... the workaround the most efficient option? See Question&Answers more detail:os...

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

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544 views

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r - Efficiently transform multiple columns of a data frame

I have a data frame, and I want to transform all columns (say, take the logs or whatever) with columns ... the dataframe is several gigabtyes? See Question&Answers more detail:os...

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

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731 views

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r - Divide two difftime objects

I have three time (POSIXct) objects t1, t2, t3 which specify the time duration to complete a task. I ... of dividing two difftime objects? 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

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r - How to suppress warnings from stats:::regularize.values?

In newer versions of R (I have 3.6 and previously had 3.2), the stats::regularize.values function has been ... there is no object 'stats'. See Question&Answers more detail:os...

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

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585 views

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r - Obtaining Percent Scales Reflective of Individual Facets with ggplot2

So I managed to get this far... ggplot(init, aes(x=factor(ANGLE), fill=NETWORK)) + geom_bar( ... scale_y_continuous(labels = percent_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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915 views

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r - Change paper size and orientation in an rmarkdown pdf

I'd like to create a PDF using rmarkdown that is A3 (or 11x17, ideally) and in landscape orientation. I can ... for any help you can provide! See Question&Answers more detail:os...

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

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575 views

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r - parsing html containing   (non-breaking space)

I am using rvest to parse a website. I'm hitting a wall with these little non-breaking spaces. How does one remove the ... = " ", "", bodytext) See Question&Answers more detail:os...

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

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419 views

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r - Changing styles when selecting and deselecting multiple polygons with Leaflet/Shiny

I'm having some problems changing polygon styles when selecting and deselecting polygons in a Leaflet Shiny app I' ... any and all 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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474 views

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r - Extracting coefficients and their standard error for each unit in an lme model fit

How could I extract coefficients (b0 and b1) with their respectively standard errors for each experimental unit (plot )in a ... ... ... ... See Question&Answers more detail:os...

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

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422 views

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r - Is there a fast parser for date

For datetimes fasttime provides very fast parsing to POSIXct library('fasttime') library('lubridate') library(' ... fast packaged alternative ? See Question&Answers more detail:os...

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

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865 views

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r - Add columns to a reactive data frame in Shiny and update them

I would like to be able to calculate a new column of data based on dividing one column by another, with ... renderTable({selectedData2() }) } 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 - Tiny plot output from sankeyNetwork (NetworkD3) in Firefox

As per object, I get a very small plot in Firefox when using sankeyNetwork() from networkd3 in shiny but not ... ].setAttribute("viewBox",""). See Question&Answers more detail:os...

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

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462 views

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r - Continuous color bar with separators instead of ticks

The picture should give a good idea of what I would want to achieve. Ideally, the resulting colour bar ... stackoverflow.com/a/50540633/7941188) See Question&Answers more detail:os...

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

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347 views

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r - Adding all elements of two lists

Suppose I have two lists, and corresponding elements of the lists are the same shape: e1=list(1,c(1,2,3), ... aren't always the best things. See Question&Answers more detail:os...

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

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361 views

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r - How to search for a string in one column in other columns of a data frame

I have a table, call it df, with 3 columns, the 1st is the title of a product, the 2nd is the ... this would be greatly appreciated. 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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462 views

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r - predict.svm does not predict new data

unfortunately I have problems using predict() in the following simple example: library(e1071) x <- c(1:10) y ... much for your help! Richard See Question&Answers more detail:os...

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

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661 views

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r - Equation Numbering in Rmarkdown - For Export to Word

When kniting a Rmarkdown file to MS Word, is there a way to have equations labled with a number that is flushed ... b = c end{equation} 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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515 views

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r - How to insert appendix after references in Rmd using Rstudio?

I am using Rstudio, to create a pdf / html document from an Rmd file. The header looks sth like this: ... the appendix rmd file look like? See Question&Answers more detail:os...

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

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1.6k views

1 answer

r - geom_smooth and exponential fits

I am new to R and I'm having some difficulty plotting an exponential curve using ggplot2. I have a set of data ... log(y) ~ x model correctly? See Question&Answers more detail:os...

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

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391 views

1 answer

r - Efficiently convert a date column in data.table

I have a large data set with many columns containing dates in two different formats: "1996-01-04" "1996-01 ... impact on computation speed in 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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942 views

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r - Edit individual ggplots in GGally::ggpairs: How do I have the density plot not filled in ggpairs?

With library(GGally) data(diamonds, package="ggplot2") diamonds.samp <- diamonds[sample(1:dim(diamonds)[1],200),] # ... )), title = "Diamonds" ) See Question&Answers more detail:os...

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

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462 views

1 answer

r - how to calculate the median on grouped dataset?

My dataset is as following: salary number 1500-1600 110 1600-1700 180 1700-1800 320 1800-1900 460 1900-2000 850 ... ). How can I achieve 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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669 views

1 answer

r - Specify position of geom_text by keywords like "top", "bottom", "left", "right", "center"

I wish to position text in a ggplot without specifying x and y positions, but instead using keywords, like e.g ... geom_text(position = "top"). See Question&Answers more detail:os...

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

0 votes

460 views

1 answer

r - How to get dimnames in xtable.table output?

I'd like to have the dimensions labeled in my xtable output. However, the table method of xtable does not ... of getting the dimensions labeled? See Question&Answers more detail:os...

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

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765 views

1 answer

r - How to facet a plot_ly() chart?

Using ggplot2 and plotly to make an interactive scatter plot with facet_wrap(). library(ggplot2) library(plotly) g ... ##Something else here? p 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 - Is it possible to include svg image in pdf document rendered by rmarkdown?

I want an svg image to be embedded in an pdf document that I render by using rmarkdown. This doesn't seem possible, ... ) ``` ![](svg_file.svg) See Question&Answers more detail:os...

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

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