dataframe sapply
dat <- data.frame(x=c(1,2), y=c(3,4), z=c(5,6)) apply(dat[,c('x','z')], 1, ... newdf <- as.data.frame(lapply(df, function(x) sapply(x, myFunctionForEachCell()})). , The sapply() function works like lapply() , but it tries to simplify the output ... to see the number of rows and columns that the dataframe contains, ...
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 dataframe sapply 相關參考資料
apply(), lapply(), sapply(), tapply() - Guru99
apply() takes Data frame or matrix as an input and gives output in vector, list or array. apply() Function is primarily used to avoid explicit uses of ... https://www.guru99.com Call apply-like function on each row of dataframe with multiple ...
dat <- data.frame(x=c(1,2), y=c(3,4), z=c(5,6)) apply(dat[,c('x','z')], 1, ... newdf <- as.data.frame(lapply(df, function(x) sapply(x, myFunctionForEachCell()})). https://stackoverflow.com R tutorial on the Apply family of functions - DataCamp
The sapply() function works like lapply() , but it tries to simplify the output ... to see the number of rows and columns that the dataframe contains, ... https://www.datacamp.com R 群組資料處理- apply - 龍崗山上的倉鼠
4. sapply 5. mapply 6. rapply 7. vapply 8. eapply. R 1. 文件. 2. apply ... lapply 會對list 和data.frame 進行處理，回傳的方式將會是list 的型態。 https://kanchengzxdfgcv.blogsp R: apply-like function that returns a data frame? - Stack Overflow
sapply: as.data.frame(sapply(iris[, 1:4], summary)); lapply: do.call(cbind, lapply(iris ... https://stackoverflow.com Sapply dataframe column assignment - Stack Overflow
I was not able to determine why your code wasn't working, but it has something to do with the columns not being defined before you run sapply ... https://stackoverflow.com Store output of sapply into a data frame? - Stack Overflow
I found an answer to my question. For those who actually did understand my problem, this answer might make sense: https://stackoverflow.com The Apply Family of Functions - Faculty
Lapply and sapply: avoiding loops on lists and data frames. The regular apply() function can be used on a data frame since a data frame is a type of matrix. https://faculty.nps.edu Using apply, sapply, lapply in R | R-bloggers
This is an introductory post about using apply, sapply and lapply, best ... As a commenter pointed out, if you are using a data frame the data ... https://www.r-bloggers.com 掌握R语言中的apply函数族| 粉丝日志
apply的家族函数; apply函数; lapply函数; sapply函数; vapply函数; mapply函数 ... 定义一个结果的数据框> df<-data.frame() # 定义for循环> for(i in ... http://blog.fens.me |