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New code examples in category R

Tucker Nelson 2021-11-20 11:49:21
r while loop
# Basic syntax: while (condition_is_true) { code to be repeated } # Example usage: i = 1 while (i < 5) { # True while i is less than 5 print(i) i = i + 1 # Increment i each iteration } # Returns: [1] 1 [1] 2 [1] 3 [1] 4 Add solution
Parzival 2021-11-19 03:26:14
remove column from matrix r
# Remove third column - by column number MyMatrix <- MyMatrix[,-3] # Remove third and fifth columns - by feeding the matrix a boolean vector MyMatrix <- MyMatrix[,c(TRUE,TRUE,FALSE,TRUE,FALSE,TRUE)] Add solution
Daniel V 2021-11-19 03:16:18
get plot title over two lines R
x <- rnorm(3) y <- rnorm(3) plot(x, y, main=paste("X:",1," ","Y:", 2," ","\nZ:",3)) # \n in main= paste() environment produces new line in plot titles Add solution
Mowwwalker 2021-11-19 02:39:25
R empty datafrane
df <-- data.frame() Add solution
Raph 2021-11-18 15:23:19
r replace na with 0
d[is.na(d)] <- 0 Add solution
Seems 2021-11-18 03:33:13
how to filter a vector by location in r
vec <- c(11,22,33,44,55,66,77,88) indexs <- c(1,8,5) vec[indexs] # will return: [1] 11 88 55 Add solution
RogueModron 2021-11-17 11:25:35
write to csv in r
df <- data.frame(name = c("Jon", "Bill", "Maria"), age = c(23, 41, 32)) write.csv(df,"C:\\Users\\Ron\\Desktop\\MyData.csv", row.names = FALSE) Add solution
Mario Trucco 2021-11-16 13:38:11
how to throw an error in R
x <- ifelse(x < 0 | x > 1, NA, x ) if( any(is.na(x)) ) warning('x not between 0 and 1') log(x / (1 - x) ) Add solution
Belphegor 2021-11-15 18:19:13
r clean environment
rm(list = ls()) Add solution
Ospalh 2021-11-14 19:26:21
r append to vector
append(x, values, after = length(x)) Add solution

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