MyDecoPlan.com - New build available

brockbr · 16th July 2008, 16:48

All,
For those playing with MyDecoPlan.com, there is a new build available.

This has many bug fixes and includes some new features such as the ability to select a square profile, and new details are available for the plan itself.

A big bug that has been fixed (and was causing long dive plans) was that I wasn't calculating pHe & pN2 correctly when using a constant pO2 (eg. CCR).

pHe & pN2 are inversely proportional to the pO2. For example, even though the Dil mix might be 10/50, the actual mix you're breathing at 220' with a setpoint of 1.3 is 17/46 (or more precisely, o2 = 17%, He = 46%, and n2 = 37%).

The math was close, but didn't factor out the actual o2 from the bottom mix, so the pN2 and pHe where mathematically higher than they should be, which caused more on-gassing, which resulted in longer deco times.

I am now starting on the Cave/Wreck bailout option as well. This will create a bailout plan that essentially starts half-way through the bottom time, effectively assuming that a cave or wreck dive of 100 minutes means that you plan to turn at 50 minutes, so this should be the deepest penetration point, and should require the most bailout gas to get out.

**Steve** · 17th July 2008, 02:21

Nice work. It is getting better. One quick observation is that although I selected Metric there are still cubic feet references throughout the page. Is there any way of taking the programme offline? Can it be saved as a self contained flash presentation on a USB drive for example?

Ben Field · 17th July 2008, 08:58

Had a play with this last night, looking good, ditto Steve's comment wrt Cfm... no idea what they are

Litres please?

With regards the Wreck/cave option- any chance we could drag the bailout point back and forth along the planned bottom time and watch the bailout profile change?

Seeing as you have the option of showing multiple profiles any chance of an option to compare 5min longer and short, then 5mtrs deeper and shallower overlaid for comparison?

Similarly how about comparing different mixes- what if I deco on 70% instead of 80% for example?

Maybe have a list of profiles and select which ones to compare on the profile panel?

Last thing- any way of inputting tanks into the bailout/gas planing side, eg- Selecting bailout gases by mixture and size/pressure (80/0-7/230) then the Bailout Gas usage section could warn you if you exceeding the bailout carried on a certain profile?

I'm liking it alot- keep up the good work

cedricverdier · 17th July 2008, 09:09

Very nice!

Would it be possible to have:
- A depth increment smaller than 10m (metric version). Selecting a bottom depth every 10m is a little bit frustrating for deep dives.

- A user-selectable depth for the last stop.

Cheers

brockbr · 17th July 2008, 12:20

Quote:

One quick observation is that although I selected Metric there are still cubic feet references throughout the page.

Is there any way of taking the programme offline?

Can it be saved as a self contained flash presentation on a USB drive for example?

1) Metric - Yes, there are still some imperial references - I haven't worked on them because I was focused in other places (like the iPhone version

) - I will be making another round of changes for metric in the next few days.

2) Yes - It can be used offline, but I haven't packaged it that way yet. I've have others ask for it, and all that is needed is a quick zip of app and it will run locally just fine (*no* connection to the Internet needed)

3) Same answer as #2

Quote:

wrt Cfm... no idea what they are Litres please?

(a) With regards the Wreck/cave option- any chance we could drag the bailout point back and forth along the planned bottom time and watch the bailout profile change?

(b) Seeing as you have the option of showing multiple profiles any chance of an option to compare 5min longer and short, then 5mtrs deeper and shallower overlaid for comparison?

(c) Similarly how about comparing different mixes- what if I deco on 70% instead of 80% for example?

(d) Maybe have a list of profiles and select which ones to compare on the profile panel?

(e) Last thing- any way of inputting tanks into the bailout/gas planing side, eg- Selecting bailout gases by mixture and size/pressure (80/0-7/230) then the Bailout Gas usage section could warn you if you exceeding the bailout carried on a certain profile?

(a) I'd been thinking about a good way to do the bailout for Cave/Wreck, and came to the same conclusion you did - Allow the person to select the bailout point. This makes sense in cave because of flow (might take 70% getting in and 30% out (Ginnie anyone

), and for wreck, a sneak dive might take you to a wreck that is 300m away from the shore entry, but in an emergency, you could ascend - Not that anyone would ever do a sneak dive on CCR

Let me work on this and see what I can come up with.

(b), (c), (d) Actually, that was the point all along - That is the reason the for the combo box on the chart so that as you entered plans in the left, you could select which ones to chart (and thus see them overlaid). The idea is to enter many plans and allow you to chain them together with surface intervals (or not, if you just want to compare things). This will start working once I finish the multiple dive entry.

(e) That is a good idea... I think I'll add that.

Quote:

(a) A depth increment smaller than 10m (metric version). Selecting a bottom depth every 10m is a little bit frustrating for deep dives.

(b) A user-selectable depth for the last stop.

(a) You can already do this - INstead of clicking the "Add" button, type in the value in the box - It's MUCH faster to enter plans this way too - Simply type 220/25-10/50-1.3 and it instantly shows the plan.

(b) This is coming.

Thanks for all the feedback guys!

b.

16th July 2008, 16:48	#1 (permalink)
brockbr Train Wrecked ;) Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Dec 2007 Location: Alabaster, AL Posts: 215	MyDecoPlan.com - New build available All, For those playing with MyDecoPlan.com, there is a new build available. This has many bug fixes and includes some new features such as the ability to select a square profile, and new details are available for the plan itself. A big bug that has been fixed (and was causing long dive plans) was that I wasn't calculating pHe & pN2 correctly when using a constant pO2 (eg. CCR). pHe & pN2 are inversely proportional to the pO2. For example, even though the Dil mix might be 10/50, the actual mix you're breathing at 220' with a setpoint of 1.3 is 17/46 (or more precisely, o2 = 17%, He = 46%, and n2 = 37%). The math was close, but didn't factor out the actual o2 from the bottom mix, so the pN2 and pHe where mathematically higher than they should be, which caused more on-gassing, which resulted in longer deco times. I am now starting on the Cave/Wreck bailout option as well. This will create a bailout plan that essentially starts half-way through the bottom time, effectively assuming that a cave or wreck dive of 100 minutes means that you plan to turn at 50 minutes, so this should be the deepest penetration point, and should require the most bailout gas to get out. __________________ Want to try FREE BETA Linux/Mac/Windows OC & CCR Decompression software I'm writing? MyDecoPlan.com
(Online)

17th July 2008, 02:21	#2 (permalink)
Steve Ladies bring a plate Current Rebreather/s: Megalodon Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Classic Kiss MK 15.X Home Build Join Date: Feb 2005 Location: Perth - Australia Posts: 1,095	Re: MyDecoPlan.com - New build available Nice work. It is getting better. One quick observation is that although I selected Metric there are still cubic feet references throughout the page. Is there any way of taking the programme offline? Can it be saved as a self contained flash presentation on a USB drive for example? __________________ WARNING: I contain occasional coarse language, extreme sexual references, nudity, and adult themes, which may offend some people - Usually churchy types.
(Offline)

17th July 2008, 08:58	#3 (permalink)
Ben Field CK+Shearwater Current Rebreather/s: Classic Kiss Other Rebreather/s: Sport Kiss Join Date: Aug 2005 Location: London, England Posts: 1,559	Re: MyDecoPlan.com - New build available Had a play with this last night, looking good, ditto Steve's comment wrt Cfm... no idea what they are Litres please? With regards the Wreck/cave option- any chance we could drag the bailout point back and forth along the planned bottom time and watch the bailout profile change? Seeing as you have the option of showing multiple profiles any chance of an option to compare 5min longer and short, then 5mtrs deeper and shallower overlaid for comparison? Similarly how about comparing different mixes- what if I deco on 70% instead of 80% for example? Maybe have a list of profiles and select which ones to compare on the profile panel? Last thing- any way of inputting tanks into the bailout/gas planing side, eg- Selecting bailout gases by mixture and size/pressure (80/0-7/230) then the Bailout Gas usage section could warn you if you exceeding the bailout carried on a certain profile? I'm liking it alot- keep up the good work __________________ www.hugsac.org.uk Beware Fridge Suck
(Online)

17th July 2008, 09:09	#4 (permalink)
cedricverdier S21 M.I.B. Current Rebreather/s: Evolution Megalodon Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Sport Kiss Classic Kiss Join Date: Apr 2005 Location: Worldwide! Posts: 494	Re: MyDecoPlan.com - New build available Very nice! Would it be possible to have: - A depth increment smaller than 10m (metric version). Selecting a bottom depth every 10m is a little bit frustrating for deep dives. - A user-selectable depth for the last stop. Cheers __________________ Cedric Verdier PADI Course Director, ANDI-IANTD-PSAI-TDI-DSAT-DAN-NAUI-CMAS Instructor Trainer Trimix (CCR and OC) and Cave Diving Instructor Trainer www.CedricVerdier.com DIRrebreather member
(Offline)

17th July 2008, 12:20	#5 (permalink)
brockbr Train Wrecked ;) Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Dec 2007 Location: Alabaster, AL Posts: 215	Re: MyDecoPlan.com - New build available Quote: One quick observation is that although I selected Metric there are still cubic feet references throughout the page. Is there any way of taking the programme offline? Can it be saved as a self contained flash presentation on a USB drive for example? 1) Metric - Yes, there are still some imperial references - I haven't worked on them because I was focused in other places (like the iPhone version ) - I will be making another round of changes for metric in the next few days. 2) Yes - It can be used offline, but I haven't packaged it that way yet. I've have others ask for it, and all that is needed is a quick zip of app and it will run locally just fine (no connection to the Internet needed) 3) Same answer as #2 Quote: wrt Cfm... no idea what they are Litres please? (a) With regards the Wreck/cave option- any chance we could drag the bailout point back and forth along the planned bottom time and watch the bailout profile change? (b) Seeing as you have the option of showing multiple profiles any chance of an option to compare 5min longer and short, then 5mtrs deeper and shallower overlaid for comparison? (c) Similarly how about comparing different mixes- what if I deco on 70% instead of 80% for example? (d) Maybe have a list of profiles and select which ones to compare on the profile panel? (e) Last thing- any way of inputting tanks into the bailout/gas planing side, eg- Selecting bailout gases by mixture and size/pressure (80/0-7/230) then the Bailout Gas usage section could warn you if you exceeding the bailout carried on a certain profile? (a) I'd been thinking about a good way to do the bailout for Cave/Wreck, and came to the same conclusion you did - Allow the person to select the bailout point. This makes sense in cave because of flow (might take 70% getting in and 30% out (Ginnie anyone ), and for wreck, a sneak dive might take you to a wreck that is 300m away from the shore entry, but in an emergency, you could ascend - Not that anyone would ever do a sneak dive on CCR Let me work on this and see what I can come up with. (b), (c), (d) Actually, that was the point all along - That is the reason the for the combo box on the chart so that as you entered plans in the left, you could select which ones to chart (and thus see them overlaid). The idea is to enter many plans and allow you to chain them together with surface intervals (or not, if you just want to compare things). This will start working once I finish the multiple dive entry. (e) That is a good idea... I think I'll add that. Quote: (a) A depth increment smaller than 10m (metric version). Selecting a bottom depth every 10m is a little bit frustrating for deep dives. (b) A user-selectable depth for the last stop. (a) You can already do this - INstead of clicking the "Add" button, type in the value in the box - It's MUCH faster to enter plans this way too - Simply type 220/25-10/50-1.3 and it instantly shows the plan. (b) This is coming. Thanks for all the feedback guys! b. __________________ Want to try FREE BETA Linux/Mac/Windows OC & CCR Decompression software I'm writing? MyDecoPlan.com Last edited by brockbr : 17th July 2008 at 12:22.
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