gather_data {creditmodel}

gather or aggregate data

Description

This function is used for gathering or aggregating data.

Usage

gather_data(dat, x_list = NULL, ID = NULL, FUN = sum_x)

Arguments

dat

A data.frame contained only predict variables.

x_list

The names of variables to gather.

ID

The name of ID of observations or key variable of data. Default is NULL.

FUN

The function of gathering method.

Details

The key to creating a good model is not the power of a specific modelling technique, but the breadth and depth of derived variables that represent a higher level of knowledge about the phenomena under examination.

Examples

dat = data.frame(id = c(1,1,1,2,2,3,3,3,4,4,4,4,4,5,5,6,7,7,
                            8,8,8,9,9,9,10,10,11,11,11,11,11,11),
                     terms = c('a','b','c','a','c','d','d','a',
                               'b','c','a','c','d','a','c',
                                  'd','a','e','f','b','c','f','b',
                               'c','h','h','i','c','d','g','k','k'),
                     time = c(8,3,1,9,6,1,4,9,1,3,4,8,2,7,1,
                              3,4,1,8,7,2,5,7,8,8,2,1,5,7,2,7,3))

gather_data(dat = dat, x_list = "time", ID = 'id', FUN = sum_x)