Sort a matrix by descending value for every row in order

I have a matrix which I want ordered by every column. Probably better to show the before and after. This is the matrix before. thematrix_before <- structure(c(0, 0, 0, 0, 0, 0.44, 0.68, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.42, 0.39, 0, 0, 0, 0, 0, 0.35, 0, 0, 0,… Read More Sort a matrix by descending value for every row in order

how to write "2023-9-15 00:00:00" by R

I am new for R, now I want to write a time like "2023-09-15 00:00:00", so I write the code time1<- as.POSIXct("2013-9-15 00:00:00",format="%Y-%m-%d %H:%M:%OS") print(time1) # [1] "2013-09-15 CST" but it’s not run. I’d appreciate it if you could help me. >Solution : time1 <- as.POSIXct("2013-9-15 00:00:00") time2 <- format(time1, "%Y-%m-%d %H:%M:%OS") print(time2)

R Error: Unsupported type passed to argument 'data'

I am working with the R programming language. I am following the tutorial here https://rstudio.github.io/dygraphs/ to make the following graph: I tried to simulate some data for this example: library(dygraphs) set.seed(1) date <- seq(as.Date("2010-01-01"), as.Date("2010-12-01"), by = "month") var1 <- rnorm(length(date), mean = 100, sd = 10) var2 <- rnorm(length(date), mean = 50, sd =… Read More R Error: Unsupported type passed to argument 'data'

R summary command doesn't show details of character variable

in R when I use summary(data.frame) command the results don’t show the details of character variables. for example summary(b) don’t show how many male or female are there? example of my problem problem? how can i solve this problem? >Solution : Assuming you used a dummy for gender gender_counts <- table(your_data$gender) Then you can use… Read More R summary command doesn't show details of character variable