(02-07-2015 01:20 PM)Coroboree Wrote: (01-26-2015 05:12 PM)SuperSleeper Wrote: JediMark is having health issues so I suspect it might be a while before development starts up again in earnest.

I am sorry to hear that, and hope that he recovers soon.

Without being personally critical, I have stated before that I think the labeling of the SH graphs as displayed on screen are deficient.

To summarize my scales:

1. The Y axis (Ordinate) labels are not well chosen for precisely defining the variable displayed, nor its (SI) units.

2. The scale divisions do not allow for easy interpolation (i.e. do not adhere to scientific standards of being multiples of 1, 2, 5 only).

3. The accuracy is not displayed, although Philips Respironics do provide data accuracy.

4. The precise value at a point is provided by the Green Cursor, point by point, but the display is a transitory single time point.

5. I have just printed a current copy of the graphs for my doctor, and the units are not displayed at all in the printout, so I have to annotate each graph.

6. In my case, I use a constant pressure (6) but there is a "pressure" graph showing variables for pressures over a range of 4.5 to 7.5 - this may be a System One data report, but this graph is obviously nonsense, and there is an easy way to omit it in any print out.

I have another problem with the Board software: I get an email with a link to the board. If I open the link, I am taken to some relevant posting. But I cannot reply to this posting, and get an error saying that I am not logged in. When I then log in, I am taken to a completely different posting on a different thread, so I think when I follow a link, and then have to log in, I think that I should be returned to the original flagged posting, and not somewhere else on a different thread.

As noted above, I do not intend personal criticism of anyone or any group. I merely point out deficiencies that I see for consideration and acceptance, or rejection. I will not be upset if someone has a different opinion, as they could be offering an improved resolution of my comments.

Since the above, I have now finish annotation, and find:

For Flow rate graph, each division is 36/4 = 9 Liters/minute

For Pressure graph, each division is 1/4 = 0.25 cm H20, not pascals

For Leak Rate, each division is 13/4 = 3.25 Liters/minute

For Snore (volume), each division is 0.5/4 = 0.125 - the units are not specified as to whether they are volume of air, or loudness.

For Resp Rate, each division is 6/4 = 1.5 breaths/minute

For Tidal Volume, each division is 830/4 = 207.5 mL (not Liters!).

For Minute Vent., each division is 19/4 = 4.75 Liters/minute.

For Insp.Time, each division is 6/4 = 1.5 seconds.

For Exp. Time, each division is 1/4 = 0.25 seconds

For AHI, each division is 8/4 = 2 events/hour, or perhaps 2 min, or 2hr total time.

For AHI, each division is 2.2/4 = 0.55 events per unspecified time interval.

For Usage, each division is 4/4 = 1 hour.

For Pressure (again), each division is 2.0/4 = 0.5 cm H2O (not pascals).

For Session Times, each division is 7/4 = 1hr, 45 min.

For Total Time in Apnea, each division is 6/4 = 1.5 minutes.

For Leak Rate, each division is 30/4 = 7.5 unspecified units.

For CSR, each division is 1/4 = 0.25% of session time.

For Total Volume, each division is 1760/4 = 440 unspecified volume of air displaced each breath.

For Minute Vent, each division is 37/4 = 9.25 unspecified units displaced each minute.

For Respiratory Rate, each division is 10/4 = 2.5 breaths/minute.

For Large Leak, each division is 2.2/4 = 0.55% of (session) time in the state of Large Leak.

Note: These are my scales - yours may be different.

I am suggesting that the names of the variables, and the size of the divisions could rationalized for precision, clarity, and ease of interpretation and use.