Data Manipulation using dplyr Package - English

Questions posted on ST Forums:

• Showing 0 to 0 of 0 entries under movies comedy tab of source window.

  Screenshot:- https://photos.app.goo.gl/i7iENquXvsnHz38r5Script:-library(dplyr)# Clear R workspace<img>rm(list = ls() ) # Declare a variable to read and store moviesData  movies <- read.csv("moviesData.csv")# View movies data frameView(movies)moviesComedy <- filter(movies,                       genre == "comedy")View(moviesComedy)Console:-> # Clear R workspace> rm(list = ls() ) > # Declare a variable to read and store moviesData  > movies <- read.csv("moviesData.csv")> # View movies data frame> View(movies)> library(dplyr)Attaching package: ‘dplyr’The following objects are masked from ‘package:stats’:    filter, lagThe following objects are masked from ‘package:base’:    intersect, setdiff, setequal, union> moviesComedy <- filter(movies,+                        genre == "comedy")> View(moviesComedy)> moviesComedy <- filter(movies,+                        genre == "comedy")> View(moviesComedy)

  06-07M 20-30S Loki_Rajasthani
  
  
  Answer last updated on: Jan. 29, 2021, 2:57 p.m.

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• Finding hp >100 and cyl=3

  Following error is appearing on writing the command mtcarshpcyl <- filter(mtcarshpcyl,cyl=3 & hp>100)Error in filter(mtcarshpcyl, cyl = 3 & hp > 100) :   unused argument (cyl = 3 & hp > 100)> View(mtcarshpcyl)Error in View : object 'mtcarshpcyl' not found

  12-13M 0-10S Joohi
  
  
  Answer last updated on: Dec. 14, 2020, 3:48 p.m.

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• Assignment

  I am facing following error in assignment .Error in select(Ozone, Wind, Temp) : object 'Ozone' not found> View(qualityOWT)Error in View : object 'qualityOWT' not found> airqualityOWT <- select(ozone,Wind,Temp)Error in select(ozone, Wind, Temp) : object 'ozone' not found> View(qualityOWT)Error in View : object 'qualityOWT' not found> airqualityOWT <- select(Ozone,Wind,Temp)Error in select(Ozone, Wind, Temp) : object 'Ozone' not found> View(qualityOWT)Error in View : object 'qualityOWT' not found> 

  12-13M 10-20S Joohi
  
  
  Answer last updated on: Dec. 14, 2020, 2:51 p.m.

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• installing dplyr

  Warning in install.packages :  package ‘dblyr’ is not available (for R version 4.0.2)

  03-04M 10-20S RAHAWIYE
  
  
  Answer last updated on: July 5, 2020, 12:10 a.m.

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• mtcars data maipulation

  HiHow can I preserve the car names in the mtcars dataset as it is stored as row names and not a seperate column?ThanksKarthik

  12-13M 40-50S hi_kar
  
  
  Answer last updated on: June 22, 2020, 11:39 p.m.

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• Large Number Of Variables

  In R software we declare large number of variables. How do we know that whether the variable which we are going to declare is already declare or not?As some variable declare in this tutorial moviesGeIm, moviesImD, moviesImA, moviesComDr etc.

  10-11M 50-60S mzaid
  
  
  Answer last updated on: May 24, 2020, 5:36 p.m.

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• Error in installing dplyr packages

  Error: package or namespace load failed for ‘dplyr’ in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]): namespace ‘pkgconfig’ 2.0.1 is already loaded, but >= 2.0.2 is requiredIn addition: Warning message:package ‘dplyr’ was built under R version 3.4.4 

  03-04M 0-10S ekavithavrs@gmail.com
  
  
  Answer last updated on: April 26, 2020, 9:56 p.m.

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