IT Nursery
I have some trouble to convert my data.frame from a wide table to a long table. At the moment it looks like this: Code Country 1950 1951 1952 1953...
I’m having trouble rearranging the following data frame: set.seed(45) dat1 <- data.frame( name = rep(c("firstName", "secondName"), each=4), numbers = rep(1:4, 2), value = rnorm(8) ) dat1 name numbers value...
A numpy matrix can be reshaped into a vector using reshape function with parameter -1. But I don’t know what -1 means here. For example: a = numpy.matrix([[1, 2,...