[OpenMadrigal-developers] Adding method getIonosphericTerminator to madmatlab

[William Rideout]

As per a request by John Foster, I'm planning to add a new method to the 
madmatlab library called getIonosphericTerminator.  It's format will be:

[term] = getIonosphericTerminator(madrigalUrl, time, alt, gridSize)

where madrigalUrl = any Madrigal site with version 2.3 or greater,

       time = Matlab time,

       alt = altitude in km at which to find the terminator,

       gridSize = size of grid in degrees to define the terminator

term is a n by 2 array of lat, longitude pairs defining the terminator.

Since this method uses the standard web service madCalculator, it will work on 
any Madrigal 2.3 site or greater.

Algorithm:  Madrigal will calculate shadowHeight for each point on a global grid 
at the given time.  Each latitude will be scanned, and any point where the 
change in shadowheight crosses the given alt will be added to term array.

Let me know if you have any comments.

Bill

-- 
Bill Rideout
MIT Haystack Observatory
Email: brideout at haystack.mit.edu
Phone: 781 981-5624