Chris, "some form of rrd" isn't necessarily the same as "some form of Tobi Oetiker's creation." It's more likely that your card uses (and returns) some form of circular buffer scheme -- this might also be called "some form of round-robin database."
hth! /andy On Tuesday 22 April 2008 01:17:08 pm Chris wrote: > Hi Fabien, > > Sorry, I have to ask... > So, how is your weight affected when you 'rrdtool dump'? > > Granted, there is the possibility that the .bin file is > not using Tobias Oetiker's algorithms. > But why would Respironics reinvent the wheel? > Respironics' smart card system is younger than RRDTool. > Others on my preferred list about cpap machines have suggested > the likelihood that the file is some form of rrd. > > I suspect its encrypted and/or compressed. > > I'm looking for suggestions or pointers about how to unlock and > dump such a file. Any help will be greatly appreciated. > > Chris > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Fabien Wernli > Sent: Tuesday, April 22, 2008 11:10 AM > To: [email protected] > Subject: Re: [rrd-users] RRD and Respironics Smart Card > > On Tue, Apr 22, 2008 at 09:45:59AM -0400, Chris wrote: > > I'm pretty sure the data is in some form of round > > robin database for a number of reasons: > > a. the data record on the smartcard > > is always the same size: 32KB. > > b. the old data rolls off when the card > > is full, and new data continues to record. > > My weight is constant, thus it is in rrdtool format > > \o/ > > _______________________________________________ > rrd-users mailing list > [email protected] > https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users > > _______________________________________________ > rrd-users mailing list > [email protected] > https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users -- Andy Riebs, HP High Performance Computing Linux R&D Technology for better business outcomes Linux Software, <http://www.hp.com/go/clusters> Catalyst Program, <http://www.hp.com/go/catalysts> My opinions are not necessarily those of HP (w) +1.603.884.1521, [EMAIL PROTECTED] (h) [EMAIL PROTECTED] (Data are not is.) _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
