R Replace Values in Data Frame Conditionally (4 Examples) | Exchange Value in Column & Entire Matrix

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R code of this video:

num2 = 3:7,
char = letters[1:5],
fac = c("gr1", "gr2", "gr1", "gr3", "gr2"))

data$num1[data$num1 == 1] ＜- 99 # Replace 1 by 99

data$char[data$char == "b"] ＜- "XXX" # Replace b by XXX

data$fac[data$fac == "gr1"] ＜- "new_group" # Replace gr1 by new_group

data[data == 3] ＜- 777 # Replace all values

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Комментарии
Автор

Liked it! Concept explained nicely with easy examples and simple manner to help understand! Keep it up!

vijayarjunwadkar
Автор

thanks you. i want to know, how to replace multiple values in the same column with a corresponding list of values with a single click

ambroiseyeboua
Автор

Hello! Thanks for this video, I finally understood why a bit of the code didn't work for me! I have a question that I don't know if there is even an answer (at least I can't find it anywhere). I want to do this replacement but with two conditions, I don't get any error but the replacement isn't being done. Plus, I already transformed both variables into chr.
== "NA" & credit_data$lenght == "NA"] <- "0"
Thank you!

danielarotaru
Автор

Do you have a video that explains how to replace a value in one column, given another value in a different column? For instance, my dataframe named data has two columns, NAME and OCCUPATION. In pseudo-code, I want something that does this: if data$NAME = "Marie", then data$occupation = "Statistician" but only for that same row. Optimally, this would be in basic R.

ProfBoggs
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Thank you for nice video. Kindly mention how to change the whole data frame with some logical condotion.

ashisranjanudgata
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How to change/replace/impute 04-04-2020 to 04/04/2020 in date column ? if Date column is character column

CoachPegasus
Автор

I need your help, actually I have data frame in which duplicate value, I want to add new column and show if any value comes two times then I want againt both result come 2, 2 and if repeat three times then it comes 3 againt all repeated values which comes thrice.

SudhirKumar-rygk
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team code
<chr> <chr>
1 QATAR QA
2 ENGLAND NA
3 SENEGAL SN
4 UNITED STATES US
5 ARGENTINA AR
6 DENMARK DK
7 ENGLAND NA
8 WALES NA
9 WALES NA

Given the data frame above, i want to convert the NA for ENGLAND and WALES to their code, EN and WL, respectively while keeping the codes for the other countries unchanged. How do i write the code in R. Thanks

jamesleleji
Автор

Hello Sir your videos are really helpful while solving exercise but I really need your help in one problem I came across data science in R book.
Q. For the job field, combine the jobs with less than 5% of the records into a field called other.
Above question is from bank_marketing_training data set of 26874 obs of 21 variables, in that job is one of them.How to compute in R I didn't get how to write in R and get it executed.

abhijeetjahagirdar