From brideout at haystack.mit.edu  Tue Apr 13 13:13:18 2010
From: brideout at haystack.mit.edu (Bill Rideout)
Date: Tue, 13 Apr 2010 13:13:18 -0400
Subject: [OpenMadrigal-developers] New Madrigal Calculator web service -
	madCalculator2
In-Reply-To: <40017CA7-1548-492D-A505-E05B6E874978@haystack.mit.edu>
References: <40017CA7-1548-492D-A505-E05B6E874978@haystack.mit.edu>
Message-ID: <6833428D-B491-4E56-9D69-E4E5832F6930@haystack.mit.edu>

Phil has asked me to supply one additional madCalculator service.   
This service will effectively allow you to call madCalculator2  
multiple times using multiple input times with a single API call.   
Right now both madCalculator and madCalculator2 operate on only one  
time at a time.  As with madCalculator, the difference will only be in  
performance.  Calling madCalculator3 for a series of different times  
will be much faster than calling madCalculator2 independently for each  
time.

The arguments for madCalculator3 will essentially be the same as  
madCalculator2, except that every individual argument for  
madCalcultor2 will instead be a list of arguments for madCalculator3,  
where the list length is the number of times being passed in.  For  
example, one argument of madCalculator2 is a list of latitudes.  For  
madCalculator3, that argument will instead be a list of lists of  
latitudes, one for each input time.

For madCalculator3, all the position arrays will be independent; that  
is, they can be different from one time to the next.  The requested  
parameters, however, will not change for each time requested.

Again, for the moment, this webService will only be available via the  
python remote API.  The matlab version will be written on as-needed  
basis.

Bill Rideout

On Mar 31, 2010, at 10:51 AM, Bill Rideout wrote:

> Right now Madrigal has a web service that allows uses to run the  
> Madrigal derivation engine for a grid of points in space, where the  
> grid is defined by start, stop, and step geodetic latitudes,  
> longitudes, and altitudes.  Phil Erickson has request a new web  
> service that provides the same service for a random collection of  
> points in space.  This can be accomplished today by repeatedly  
> calling the existing madCalculator service, but this can be quite  
> slow due to the set-up time often required to run the Madrigal  
> derivation engine.  This existing web service is documented at:
>
> http://madrigal.haystack.mit.edu/madrigal/madpyDoc/services/madCalculatorService.py.html
>
> For the new web service, instead of a grid being specified, the user  
> will supply lists of geodetic latitudes, longitudes, and altitudes.   
> The new web service will be called madCalculator2, to emphasize its  
> similarity to the existing service.  I will immediately release a  
> new version of the python remote Madrigal API that will be able to  
> use this service on the Millstone Madrigal server.  This service  
> will be accessible from all other Madrigal servers after the next  
> release.  A Matlab remote Madrigal API will follow later.
>
> Bill Rideout