Have you looked at Access?  That's what I'm using so far to plot for my
datalogger project.  I'm not totally satisfied and hope to find something
more appropriate but it's getting the job done.  I hold all of my real
samples in a table and then if I want to do a moving average or whatever
other kind of analysis I just write a quick function in VC++ to calculate it
and save the results to a new table (or to the same table with a
distinguishing index value for all the records) and look at it with the
"PivotChart" view.  It also does smoothed curves on its own but it doesn't
seem very user configurable as to the nature of the smoothing (or maybe I
haven't looked hard enough).

Definitely the DB can hold more than 65k samples but I can't tell you how
PivotChart will respond to the load.  But it gives you an relatively
convenient platform to do PC processing on the data to get the chunk or the
downsampled data that you need.

Nick



----- Original Message -----
From: "Jake Anderson" <grooveee@OPTUSHOME.COM.AU>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Monday, November 24, 2003 6:55 AM
Subject: Re: [PICLIST] [OT]: Graphing


> I want to look through the data to find bits of it that are interesting.
> cuttently the interesting bits are already > 32k samples
>
> I want to see moving averages, smoothed curves a whole bunch of stuff and
> there must be something better that excel out there for doing that lol.
>
>
>
> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Russell McMahon
> Sent: Monday, 24 November 2003 10:57 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [OT]: Graphing
>
>
> You can't *see* 65,000 points, let alone 2 million.
> If you subset the data in an external program Excel will happily plot
graphs
> far more detailed than would possibly be useful. If you want to use some
of
> Excels advanced features this may not work, but for display purposes it's
> fine. As long as the data varies slowly relative to your sampling rate (ie
> you obey Mr Nyquist's warnings) then you could just take every Nth data
> point or process it intelligently. If the data varies "rapidly" then you
can
> only view a subset of it in a manner that is meaningful to your eye/brain.
> Even plotted along the long side of an A3 sheet a 65000 point data set
gives
> about 4000 dpi !
>
>         RM
>
> --
> http://www.piclist.com hint: The list server can filter out subtopics
> (like ads or off topics) for you. See http://www.piclist.com/#topics
>
> --
> http://www.piclist.com hint: The list server can filter out subtopics
> (like ads or off topics) for you. See http://www.piclist.com/#topics
>

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics