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Topic: Passing large arrays between functions
Replies: 2   Last Post: Sep 5, 2013 2:18 PM

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Loren Shure

Posts: 991
Registered: 12/7/04
Re: Passing large arrays between functions
Posted: Sep 5, 2013 1:29 PM
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"IceHaven " <alanlelandchan@gmail.com> wrote in message
news:l0ac61$jab$1@newscl01ah.mathworks.com...
> Hi,
>
> I'm looking for a way to pass large arrays between functions without using
> globals. I have a script that analyzes lots of data, and i want to create
> a function that's sole purpose is to graph this data (and in turn
> centralize what data is graphed and what isn't).
>
> I know that I can do this by making a ton of global arrays, but this is
> obviously a dangerous solution. The other solution I can think of is
> somehow passing the arrays to another workspace, then pulling that
> workspace into the graphing function. I'm not sure how that would work
> though.
>
> Is there a way to gather large arrays from different functions and scripts
> without using globals?
>
> thanks!


Glad you don't care for the global data idea!

If you simply pass the arrays but don't alter them, a real copy is never
made. However, a copy is always made to hold within plots. Since copies
aren't made if the arrays aren't being updated, simply send your large
arrays in as input arguments.

The documentation has a bunch of information on memory as does this blog
post of mine:
http://blogs.mathworks.com/loren/2006/05/10/memory-management-for-functions-and-variables/



--
--Loren

http://blogs.mathworks.com/loren




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