Community Profile


Josiah Renfree


6 total contributions since 2007

I'm an acoustic engineer living in San Diego, CA. I work at the Southwest Fisheries Science Center, which is a part of NOAA, developing methods and techniques using sound to identify and enumerate fish populations.
Professional Interests: signal processing, oceanography, finance, stocks, options


Contributions in
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hist_stock_data(start_date, end_date, varargin)
Used to retrieve historical stock data for a user-specified date range

6 months ago | 100 downloads |


getDepth(latitude, longitude)
Obtain seabed depth at any location using high-resolution GMRT database

2 years ago | 2 downloads |


Distance calculation using Haversine formula
Compute the distance between two locations using the Haversine formula

3 years ago | 16 downloads |


Historical Volatility
Calculates the annualized historical volatility for a stock over the previous N trading days.

7 years ago | 10 downloads |


RSI calculator
Calculate the RSI for a stock over any time range for any given period

10 years ago | 6 downloads |


Convert time to Windows NT format
Used to convert a time vector into the time format used by Windows NT. This is the number of 100-ns

11 years ago | 0 downloads |