Hi, Bill,
Some time ago I added support for "arbitrary storage of 2d data". I
still need to document this more ("real" work has taken precedence
since that time), but the idea is that many of the 2D plotting
functions would access the 2D data field using a set of potentially
custom accessor functions. Using this technique, one could store
sparse data however was most convenient/efficient and provide
accessor functions to allow PLplot functions to access it as a fully
populated 2D data array. In theory, one need not even have data if
the "accessor" functions were actually "generator" functions! I
think this could help with interfacing to your DWT data in an
efficient way.
Dave
On Sep 22, 2010, at 19:28 , Schwab,Wilhelm K wrote:
> Hez,
>
> I probably should dig into wavelab's source to look for clues on
> how, if at all, they take advantage of the longer scales (the ones
> with few coefficients). The detail of the shortest scale present
> in the DWT uses roughly half of the memory of the transform.
> Blowing it up into a rectangular matrix would take considerably
> more storage than the transform. The good news is that in modern
> hardware, it's probably reasonable to ask for that amount of
> memory. Of course, sparse storage would start to hurt on the
> shorter scales.
>
> gnuplot has a map view that enters into making colored images. At
> least in some situations, one draws a 3D plot and tells gnuplot to
> project it without perspective. Is there anything like that to
> worry about in PLplot? If you don't know what I mean, that is
> probably a good sign :)
>
> Thanks!
>
> Bill
>
>
> ________________________________________
> From: [email protected] [[email protected]] On Behalf Of
> Hezekiah M. Carty [[email protected]]
> Sent: Wednesday, September 22, 2010 9:00 PM
> To: Schwab,Wilhelm K
> Cc: [email protected]
> Subject: Re: [Plplot-general] PLplot+wavelets?
>
> On Tue, Sep 21, 2010 at 4:58 PM, Schwab,Wilhelm K
> <[email protected]> wrote:
>> Hello all,
>>
>> Are any of you using PLplot to produce scalograms or similar
>> graphics?
>>
>> Bill
>>
>
> Bill,
>
> I haven't used PLplot for this, but the plimage and plimagefr
> functions may be useful to build such functionality.
>
> Hez
>
> ----------------------------------------------------------------------
> --------
> Start uncovering the many advantages of virtual appliances
> and start using them to simplify application deployment and
> accelerate your shift to cloud computing.
> http://p.sf.net/sfu/novell-sfdev2dev
> _______________________________________________
> Plplot-general mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/plplot-general
------------------------------------------------------------------------------
Start uncovering the many advantages of virtual appliances
and start using them to simplify application deployment and
accelerate your shift to cloud computing.
http://p.sf.net/sfu/novell-sfdev2dev
_______________________________________________
Plplot-general mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/plplot-general
