Top "Data-management" questions

Read a CSV from github into R

I am trying to read a CSV from github into R: latent.growth.data <- read.csv("https://github.…

r data-manipulation data-management
Quickly remove zero variance variables from a data.frame

I have a large data.frame that was generated by a process outside my control, which may or may not …

r data-management
Realm migrations in Swift

I have a Realm Object modeled as so class WorkoutSet: Object { // Schema 0 dynamic var exerciseName: String = "" dynamic var reps: Int = 0 // …

swift migration realm data-migration data-management
NSCoding VS Core data

I've been searching for an article that explains NSCoding (NSKeyedArchiver...) advantages and disadvantages over use of CoreData (SQLite....). There's a …

ios core-data persistence nscoding data-management
join/merge two columns inside a data-frame

Say I have this data, (df <- data.frame( col1 = c('My','Your','His','Thir'), col2 = c('Cat','Dog',…

r join merge data-management
How to convert only SOME positive numbers to negative numbers (conditional recoding)?

I am looking for a convenient way to convert positive values (proportions) into negative values of the same variable, depending …

r variables data-management
Reading plist file. iOS Programming

I have this code and can't figure out what I'm doing wrong. As you can see in the code below …

ios uitableview plist data-management