Recent questions tagged R

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r - Add missing rows within combinations of factors

I have a data frame that's maybe best approximated as: library(data.table) z <- rep("z",5) y <- c(rep(" ... and can't come up with a solution. See Question&Answers more detail:os...

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

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641 views

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r - How do I label a stacked bar chart in ggplot2 without creating a summary data frame?

The following code provides a wonderful stacked bar chart cls.grp <- gl(n=4,k=20,labels=c("group a","group ... of my syrclia and plot that? See Question&Answers more detail:os...

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

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610 views

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r - Using dplyr to get cumulative count by group

Thanks in advance. I have the following data: df <- data.frame(person=c(1,1,1,1,2,2,2,2,3,3,3,3), neighborhood= ... 1,1,0,0,1,2) ) Thanks again. See Question&Answers more detail:os...

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

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409 views

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r - How to convert class of several variables at once

So I have a data frame with several variable that are characters that I want to convert to numeric. Each of these ... ")) df =cbind(df,df1) 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 - Automatically generate new variable names using dplyr mutate

I would like to create variable names dynamically while using dplyr; although, I'd be fine with a non- ... variables: Petal.Length_lag <dbl> 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

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r - Grouping factor levels in a data.table

I'm trying to combine factor levels in a data.table & wondering if there's a data.table-y way to do so. ... vis-a-vis the latter two methods) See Question&Answers more detail:os...

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

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423 views

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r - How can I check if multiple strings exist in another string?

I have this string: myStr <- "I am very beautiful btw" str <- c("very","beauti","bt") Now I want ... above it should be TRUE. Many 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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259 views

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r - Empty output when reading a csv file into Rstudio using SparkR

I'm a new user of SparkR. I'm trying to load a csv file into R using SparkR. Sys.setenv(SPARK_HOME ... .spark.executor.Executor$TaskRunner.run(Executor.scala:214) at java.util....

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

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303 views

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r - Cannot install stringi since Xcode Command Line Tools update

System: macOS Sierra 10.12.6 Xcode: 9.2 (2347) R: 3.4.0 RStudio: 1.1.383 I'm attempting to install the ... .0 digest_0.6.12 devtools_1.12.0.9000 See Question&Answers more detail:os...

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

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505 views

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r - Sparklyr: Use group_by and then concatenate strings from rows in a group

I am trying to use the group_by() and mutate() functions in sparklyr to concatenate rows in a group. Here is a ... paste(y, collapse = " ")) See Question&Answers more detail:os...

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

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388 views

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r - Obtain function from akima::interp() matrix

Using the interp function (Akima package), it is possible to draw the surface corresponding to the ... for multiple parameters interpolation. See Question&Answers more detail:os...

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

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576 views

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r - plot.lm Error: $ operator is invalid for atomic vectors

I have the following regression model with transformations: fit <- lm( I(NewValue ^ (1 / 3)) ~ I( ... , and residuals all work 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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400 views

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r - Non-standard evaluation and quasiquotation in dplyr() not working as (naively) expected

I am trying to search a database and then label the ouput with a name derived from the original ... count_colname) # "derived_name_letr_count" See Question&Answers more detail:os...

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

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548 views

1 answer

r - Populate NAs in a vector using prior non-NA values?

What's a compact/efficient way to populate NAs using the prior non-NA value? For example: test = c( 1 , 2 , ... I'm trying to avoid a for 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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480 views

1 answer

r - dist function with large number of points

I am using the dist {stats} function to calculate the distance between points, my problem is that I ... points this distance corresponds to? 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 - Filter data table by dynamic column name

lets say I have a data.table with columns A, B and C I'd like to write a function that applies a filter ... blue line. Can this 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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533 views

1 answer

r - Read column names as date format

I have date in Excel as follows, first col1 as char and from col2 to col5 is in date format (mm/dd/yyyy ... Excel date column with same 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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591 views

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r - geom_bar + geom_line: with different y-axis scale?

Is there any way to plot geom_bar with geom_line like the following chart. I have come up with the two separate ... Product") p2 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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482 views

1 answer

r - split string last delimiter

I need help figuring out how to split strings in a column of a data frame based on the last delimiter when I have varying ... ('b', 'c', 'd') 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

1 answer

r - How do I substitute symbols in a language object?

Suppose I have the following language object: lang <- quote( f(x=a) ) and I want to substitute in 1 for a. ... ) does in fact do what I expect. See Question&Answers more detail:os...

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

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688 views

1 answer

r - Find closest points (lat / lon) from one data set to a second data set

I have two data sets, A and B, which give locations of different points in the UK as such: A = data. ... familiar at all with the geo packages. 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 - Separate a column into multiple columns using tidyr::separate with sep=""

df <- data.frame(category = c("X", "Y"), sequence = c("AAT.G", "CCG-T"), stringsAsFactors = FALSE) df category sequence ... T . G 2 Y C C G - T 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 - Shiny promises future is not working on eventReactive

I have an inputButton than when you click it, 2 querys to mysql database are done. One is a heavy one (more ... ,server) What I'm 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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664 views

1 answer

r - How do I remove NAs with the tidyr::unite function?

After combining several columns with tidyr::unite(), NAs from missing data remain in my character vector, which I do not want. ... 3 A.1 D.4 E.5 See Question&Answers more detail:os...

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

0 votes

390 views

1 answer

r - list unique values for each column in a data frame

Suppose you have a very large input file in "csv" format. And you want to know the different values that occur ... what my data is all about. See Question&Answers more detail:os...

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

0 votes

495 views

1 answer

r - Adding manual legend in ggplot

I've looked through prior similar questions and (I think) have done everything that's been recommended in ... would be greatly appreciated! See Question&Answers more detail:os...

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

0 votes

312 views

1 answer

r - Create a new column with non-null columns' names

My data set looks like this one: library(data.table) df <- data.table(a = c(1,2,3,4,5), b = c(1,0,2,5,1), c ... 3: 3 b_c # 4: 4 b_d # 5: 5 b_d See Question&Answers more detail:os...

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

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416 views

1 answer

r - How to custom or display modebar in plotly?

I would like to custom the modebar (on top right) so as to keep just "zoom","pan","box select","zoom ... ) ggplotly(example) Thank you for help See Question&Answers more detail:os...

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

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