Recent questions tagged R

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Trying to tag a sentence using openNLP. library(openNLP) str <- "this is a the first sentence." tagged_str ... "tagPOS" Any suggestions? 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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r - Overflowing X axis (ggplot2)

I have a list of companies that includes three variables: year founded, market capitalization and company name (actually, ... the Y-axis, great. See Question&Answers more detail:os...

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

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387 views

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r - predict.lm with newdata

I've built an lm model without using the data= parameter: m1 <- lm( mdldvlp.trim$y ~ gc.pc$scores[,1] ... strategies above work in predict.lm? 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 - Why can't one have several `value.var` in `dcast`?

Why can't one have multiple variables passed to value.var in dcast? From ?dcast: value.var name of column ... (perhaps using reshape, etc.)? See Question&Answers more detail:os...

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

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693 views

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r - Modifying Plot in ggplot2 using as.yearmon from zoo

I have created a graph in ggplot2 using zoo to create month bins. However, I want to be able to modify the ... to find out! 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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554 views

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r - splitting (1:n)[boolean] into contiguous sequences

I want to split up my data into groups of successive rows that pass some test. Here's an example: set.seed(1) n ... tricks I've seen on SO... 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 - Using discrete custom color in a plotly heatmap

I'm trying to generate a plotly heatmap, where I'd like the colors to be specified by a discrete scale. ... achieve this faceting with plotly? See Question&Answers more detail:os...

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

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536 views

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r - Character Extraction from String

How would you extract all characters up to a specified character? For Example given, I would like to extract everything ... to work. any ideas? 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 - Is there an efficient way to parallelize mapply?

I have many rows and on every row I compute the uniroot of a non-linear function. I have a quad-core Ubuntu ... set tol as big as possible. 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 - geom_line : How to connect only a few points

I have this dataframe and this plot : df <- data.frame(Groupe = rep(c("A","B"),4), Period = gl(4,2 ... it always mess up my grouping colors :/ See Question&Answers more detail:os...

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

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487 views

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r - Get data out of a tcltk function

This is probably so simple I will cringe when the answer comes back but I am totally stumped. I have tried ... 4 Thanks in advance for helping. See Question&Answers more detail:os...

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

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598 views

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r - dplyr row_number Error in rank

I am trying to spread the corr column in a data frame wide using dplyr, but row_number keep failing with > o<- ... 16L), class = "data.frame") See Question&Answers more detail:os...

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

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555 views

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r - Fastest way to do this double summation?

What is the fastest way to do this summation in R? This is what I have so far ans = 0 for (i in 1 ... are omega^2 and sigma^2 respectively. See Question&Answers more detail:os...

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

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601 views

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r - convert to local time zone using latitude and longitude?

I have a data set with the following information: latitude, longitude, EST time. For example, for one observation ... do this with R? 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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427 views

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r - Count number of values in row using dplyr

This question should have a simple, elegant solution but I can't figure it out, so here it goes: Let's say ... typing out all the column names. See Question&Answers more detail:os...

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

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487 views

1 answer

r - Extract certain files from .zip

Is there a way to selectively extract from a .zip archive those files with names matching a pattern? For example, if I ... on v3.2.2 (Windows). See Question&Answers more detail:os...

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

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590 views

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r - Fill in gaps (e.g. not single cells) of NA values in raster using a neighborhood analysis

With the raster below, with an increased number of NA values library(raster) filename <- system.file("external/test ... ' gaps of missing data. 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 - Linear regression with constraints on the coefficients

I am trying to perform linear regression, for a model like this: Y = aX1 + bX2 + c So, Y ~ X1 + X2 Suppose I have ... ,17,56,37,56,34,78)] <- NA 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

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r - Using dplyr to group_by and conditionally mutate a dataframe by group

I'd like to use dplyr functions to group_by and conditionally mutate a df. Given this sample data: A B C ... ) Any insights 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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420 views

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r - ggvis - Interactive X axis for bar chart

I'm looking into building a shiny app with ggvis. For this I'm using a small dataset called "company". It ... Thank you in advance. Kind regards See Question&Answers more detail:os...

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

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476 views

1 answer

r - Is it possible to fix axis margin with ggplot2?

I have an interactive display consisting of a bar chart that shows a selected statistic for different categories. ... facets or with gtable. See Question&Answers more detail:os...

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

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492 views

1 answer

r - Changing the radius of a coord_polar ggplot

I'm looking to reduce the display radius of a pie chart built in ggplot2 relative to the rest of the ... Any suggestions would be 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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598 views

1 answer

r - Divide all columns by the value from the 2nd column - apply for all rows

I have such data: dput(tbl_data[1:5]) structure(list(Name = c("Mark", "Anders", "Tom", "Vin", " ... my mind is not working properly today. See Question&Answers more detail:os...

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

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469 views

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r - Manually defining the colours of a wireframe

I am plotting some surfaces in R using the lattice package. I can't find a way to choose the colours of ... Anyway this could be done? 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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1.1k views

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r - ggplot2 positive and negative values different color gradient

I am using R (3.0.1), and ggplot2 (0.9.3.1). I have data that contains both positive and negative values, and ... ), values=rescale(c(-1,0,1))) See Question&Answers more detail:os...

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

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944 views

1 answer

r - Plot margins in RMarkdown/knitr

Within RStudio my plots look perfect, but when I generate HTML via the "knit HTML" button my margins are being ... the y is slightly visible). See Question&Answers more detail:os...

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

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856 views

1 answer

r - mlogit: missing value where TRUE/FALSE needed

I have data from a discrete choice experiment (DCE), looking at hiring preferences for individuals from ... (chid) alternatives(sector) See Question&Answers more detail:os...

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

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1.1k views

1 answer

r - Plot negative values in logarithmic scale with ggplot 2

I need to plot with ggplot2 package in R a graph with some negative values using an x logarithmic scale. ... Is this possible using ggplot2? See Question&Answers more detail:os...

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

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