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Code Listing by Josiah Renfree

Code 1-3 of 3   






This program is used to calculate the Relative Strength Index (RSI) technical indicator for a user-provided vector giving stock prices. The user may also specify the number of samples to use for each period. The default period is 14 samples.

RSI = calc_RSI(data,N) calculates the RSI over the stock price values found in data using a period of N samples.

RSI = calc_RSI(data) calculates the RSI using the default period of 14...



This program calculates the distance between two locations (latitude and longitude) using the Haversine formula. The Haversine formula gives the shortest distance between two points over the earth's surface, ignoring elevation, hills, etc...



It connects and retrieves data from the Yahoo! finance service.

The program uses daily closing prices in the calculations.

If not specified, the program defaults to N=20 previous trading days.

The user may supply...