rtCreateTrans {hpiR}

Create transaction data for rt approach

Description

Generate standardized object for rt estimate approach

Usage

rtCreateTrans(trans_df, prop_id, trans_id, price, date = NULL,
  periodicity = NULL, seq_only = FALSE, min_period_dist = NULL, ...)

Arguments

trans_df

transactions in either a data.frame or a 'hpidata“ class from dateToPeriod() function

prop_id

field contain the unique property identification

trans_id

field containing the unique transaction identification

price

field containing the transaction price

date

default=NULL, field containing the date of the sale. Only necessary if not passing an 'hpidata' object

periodicity

default=NULL, field containing the desired periodicity of analysis. Only necessary if not passing a 'hpidata' object

seq_only

default=FALSE, indicating whether to only include sequential repeat observations 1 to 2 and 2 to 3. False returns 1 to 2, 1 to 3 and 2 to 3.

min_period_dist

[12] Minimum number of period required between repeat sales

...

Additional arguments

Value

data.frame of repeat transactions. Note that a full data.frame of the possible periods, their values and names can be found in the attributes to the returned 'rtdata' object

Further Details

Properties with greater than two transactions during the period will make pairwise matches among all sales. Any property transacting twice in the same period will remove the lower priced of the two transactions. If passing a raw data.frame (not a 'hpidata“ object) the "date" field should refer to a field containing a vector of class POSIXt or Date.

Examples

 # Load data
 data(ex_sales)

 # With a raw transaction data.frame
 rt_data <- rtCreateTrans(trans_df = ex_sales,
                          prop_id = 'pinx',
                          trans_id = 'sale_id',
                          price = 'sale_price',
                          periodicity = 'monthly',
                          date = 'sale_date')