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Recent questions tagged dplyr

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dplyr - Tilde Dot in R (~.)

Can anyone explain the tilde dot (~.) in R? I have seen some posts about it already. I know the tilde is used for ... %>% detect(~. > 5) 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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1.5k views

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dplyr - R cumulative sum by condition with reset

I have a vector of numbers in a data.frame such as below. df <- data.frame(a = c(1,2,3,4,2,3 ... several hundred thousand rows in a 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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1.2k views

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dplyr - R Conditional evaluation when using the pipe operator %>%

When using the pipe operator %>% with packages such as dplyr, ggvis, dycharts, etc, how do I do a step ... Is there a better way without all the redundancy? Question&Answers:os...

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

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1.1k views

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dplyr - bind two dataframe in r and fusionnate two columns

Hello I have 2 dataframe such as df1 COL1 total A 23 B 76 C 89 D 29 E 9 F 2 df2 COL1 total ... .com/questions/65830093/bind-two-dataframe-in-r-and-fusionnate-two-columns...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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960 views

1 answer

dplyr - Linking Flights in a Schedule with R

I have a tibble of flights for a given airline schedule that I am trying to 'link' together. The data ... stackoverflow.com/questions/65832426/linking-flights-in-a-schedule-with-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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dplyr - count number of rows needed to have sum greater than a particular value in R

I want to subset dataframe such that no of rows needed to get mpg value is at least 100. library(datasets) data( ... rows-needed-to-have-sum-greater-than-a-particular-value-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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dplyr - Creating a loop to fill an empty dataframe in R

I have a dataframe called all.cols2 where I am attempting to fill empty columns. The column headers are the names of ... /65835508/creating-a-loop-to-fill-an-empty-dataframe-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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dplyr - Selecting rows conditioned on other columns of data frame in r

I have a data set like this id <- rep(c("A", "B", "C", "D", "E"), 5) year <- ... .com/questions/65836946/selecting-rows-conditioned-on-other-columns-of-data-frame-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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974 views

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dplyr - How to fix the consistency of columns in R?

There is a data frame need to fix the consistency of the two columns. I used this code to get the uniques ... com/questions/65840555/how-to-fix-the-consistency-of-columns-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

dplyr - How to get top n % and button n% in data frame in R

This question already has answers here: question from:https://stackoverflow.com/questions/65846839/how-to-get-top-n-and-button-n-in-data-frame-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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998 views

1 answer

dplyr - Transforming columns based off separate dataframe - R solution

I'm trying to write some more sophisticated code. I have a problem which I have a solution for, ... /questions/65859760/transforming-columns-based-off-separate-dataframe-r-solution...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

dplyr - renaming a subset of contiguous columns in a data.frame/tible based on name-indexing in R

I want so select a subset of consecutive columns by column name, and rename with a character vector. example data: ... -contiguous-columns-in-a-data-frame-tible-based-on-name-inde...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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994 views

1 answer

dplyr - can I use pipes | in R, not %>%

This has probably been asked but I can't find it. In R, I want to use the | pipe instead of %>%. I'm ... from:https://stackoverflow.com/questions/65873759/can-i-use-pipes-in-r-not...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

dplyr - How to print the head (first 10 rows) with only select variables in R

To print out the first 10 rows of a dataframe in R, I am using head(data.frame, 10). But this dataframe has 64 ... -to-print-the-head-first-10-rows-with-only-select-variables-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

dplyr - Why the mutate function dose not work in R?

I do not know what is wrong with my code. I want to total/sum(total column. But, it just filled by 1. ... .com/questions/65896735/why-the-mutate-function-dose-not-work-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

dplyr - Subset dataframe by unique values within a column in R

Hello I have a dataframe such as Group COL1 Event G1 SP1 1 G1 SP2 1 G1 SP3 2 G1 SP3 2 G2 SP4 3 G2 ... .com/questions/65902624/subset-dataframe-by-unique-values-within-a-column-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

dplyr - Is there a way to turn a specific amount of columns to rows in R?

A B C n n% FALSE FALSE FALSE randomnum1 0.86 FALSE FALSE TRUE randomnum2 0.6 FALSE TRUE FALSE randomnum3 0.3 TRUE FALSE ... a-way-to-turn-a-specific-amount-of-columns-to-rows-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

975 views

1 answer

dplyr - how to leave only one value (the most recent) from the array of duplicates in R

This question already has answers here: question from:https://stackoverflow.com/questions/65905259/how-to-leave-only-one-value-the-most-recent-from-the-array-of-duplicates-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

916 views

1 answer

dplyr - How can you efficiently identify sales patterns using R?

Closed. This question needs to be more focused. It is not currently accepting answers. question from:https:// ... /65910373/how-can-you-efficiently-identify-sales-patterns-using-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

908 views

1 answer

dplyr - r data transform separate columns

I have a dataset with two columns three columns. The third column has date value mixed with some ... //stackoverflow.com/questions/65911890/r-data-transform-separate-columns...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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895 views

1 answer

dplyr - Subsetting values even further in r

I am having trouble trying to list all the songs in the 5 genres for this question. I have narrowed ... //stackoverflow.com/questions/65912172/subsetting-values-even-further-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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978 views

1 answer

dplyr - Tried code in R with mutate_at and max() functions with own data. Warning messages come up: no non-missing arguments to max

I'm curretly learning R with a book and was trying a mutate_at function from dplyr. In this example I want to ... r-with-mutate-at-and-max-functions-with-own-data-warning-messag...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

890 views

1 answer

dplyr - detecting sharp bursts in several variables simultaneously in R

i try be clearly. here data dt=structure(list(x1 = c(28.5, 25.5, 28, 27, 29), x2 = ... .com/questions/65926328/detecting-sharp-bursts-in-several-variables-simultaneously-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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872 views

1 answer

dplyr - How do I extract parameters from listed models in R?

I am trying to extract the parameters of a model I have designed for my work, but am having trouble doing so. ... /65927675/how-do-i-extract-parameters-from-listed-models-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

1 answer

dplyr - r wide to long erroring row of output must be identified by a unique combination of keys

This question already has answers here: question from:https://stackoverflow.com/questions/65948467/r-wide-to-long-erroring-row-of-output-must-be-identified-by-a-unique-combination...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

dplyr - Identify elements from previous group in R

I have a dataframe that looks like this and I try to generate the last column Searched tibble::tribble( ~ ... .com/questions/65952391/identify-elements-from-previous-group-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

930 views

1 answer

dplyr - How do I loop over a list to create a new ID based on list values in R?

I have the following data: | parent_sku | stock_status | regular_price | tax_class | |:----------:|:-------------: ... loop-over-a-list-to-create-a-new-id-based-on-list-values-in-r...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

911 views

1 answer

dplyr - R function with multiple input data frames and colnames as function arguments for updating a data frame

I would like to write a function which updates one data frame based on the other data frame. When the id ... -with-multiple-input-data-frames-and-colnames-as-function-arguments-fo...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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