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12-03-2004, 12:15 PM
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#1
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Registered User
Location: Scotland
Interests: Hole maker
Boat make: Humber Ocean Offshore
Engines: KAD 300/DPX
Join Date: Mar 2004
Location: Scotland
Posts: 958
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Matt's GPS thread...
We left off somewhere about...... me saying that I thought, for speed calculation purposes, the gps software would discard the spurious fixes. There were posts after this but the site crashed before I got to read them.
Over to you, Matt.
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JW.
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12-03-2004, 01:00 PM
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#2
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Registered User
Location: Scotland
Interests: Hole maker
Boat make: Humber Ocean Offshore
Engines: KAD 300/DPX
Join Date: Mar 2004
Location: Scotland
Posts: 958
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Yes, but if it's averaging then the fix that indicated the +5mph would be part of the averaging. Eg. say it's averaging over 10 fixes, if 9 of them are good then that one will have a limited effect.
Do you know whether displayed fixes are averaged?
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JW.
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12-03-2004, 02:27 PM
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#3
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numbskull
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast
Join Date: Mar 2004
Location: South
Posts: 15,959
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Quote:
Originally posted by Matt
"spurious peak readings"
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I can see that phrase getting some use here on boatmad! (along with "Searay Speedo".
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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12-03-2004, 04:43 PM
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#4
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numbskull
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast
Join Date: Mar 2004
Location: South
Posts: 15,959
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It wasn't deliberate, just forgot to toggle it from 'OFF' in the Tech Q&A forum, rest were done 
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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12-03-2004, 11:34 PM
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#5
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Registered User
Location: Park
Occupation: Don't be stoopid, I'm a simple primate
Interests: Bananas
Join Date: Mar 2004
Location: Park
Posts: 38
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Quote:
Originally posted by Matt
Phew! Thought you'd got all JK on me.
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You haven't been frequenting those clubs again have you??
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13-03-2004, 06:50 PM
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#6
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Registered User
Country: uk
Location: dorset
Interests: wasting money on boats
Boat name: aquilla .
Boat make: Superhawk 40. Ring 21E. Seadoo gtx. Windy Khamsin
Engines: Kad 300s. 300xs Dbr .d6 370 230 4tec
Cruising area: corfu
Join Date: Mar 2004
Location: dorset
Posts: 570
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boat speeds
what is the best way to get an avarage speed then ? 
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13-03-2004, 07:36 PM
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#7
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numbskull
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast
Join Date: Mar 2004
Location: South
Posts: 15,959
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A Gaffrig CG, or Windermere week
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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13-03-2004, 07:52 PM
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#8
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Registered User
Country: uk
Location: dorset
Interests: wasting money on boats
Boat name: aquilla .
Boat make: Superhawk 40. Ring 21E. Seadoo gtx. Windy Khamsin
Engines: Kad 300s. 300xs Dbr .d6 370 230 4tec
Cruising area: corfu
Join Date: Mar 2004
Location: dorset
Posts: 570
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gaffrig cg
what does CG stand for
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13-03-2004, 08:19 PM
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#9
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numbskull
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast
Join Date: Mar 2004
Location: South
Posts: 15,959
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Gaffrig Competition Gauge.
Here's one I prepared earlier:
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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16-03-2004, 09:19 PM
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#10
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Registered User
Location: West Sussex
Occupation: fixin when its broke
Interests: Using it til it falls apart
Boat name: Black Widow
Boat make: Donzi 30' sportsboat
Engines: 2* 454
Cruising area: Solent + south coast
Join Date: Mar 2004
Location: West Sussex
Posts: 189
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Mathmatical modelling thread.
Quote:
Originally posted by Matt
You'd assume there's some filtering wouldn't you, but at 65mph, an extra 5mph might be below the rejection threshold
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I think You'd have to add 5 to every sample to continuosly to get the average up by 5.
There could be errors on the negative side too.
You could end up with a reduced speed if the system shifted your position the other way.
The M/Boat mags did a similar position trial.
Your URL sir...
http://users.erols.com/dlwilson/gpsacc.htm
MR sad git here, still had it printed out beside the PC.
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17-03-2004, 09:17 AM
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#11
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numbskull
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast
Join Date: Mar 2004
Location: South
Posts: 15,959
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Villain
JK's a very bad boy! (anyone who looked at this thread earlier today will know what I'm talking about!
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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17-03-2004, 09:54 AM
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#12
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Chief C*nt!
Country: United Kingdom
Location: Brighton
Occupation: Sparkler prefect
Interests: Boats
Boat make: Other people's mostly
Join Date: Mar 2004
Location: Brighton
Posts: 872
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Quote:
Originally posted by Matt
Phew! Thought you'd got all JK on me.
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Matt, you're in IT apparently, so you should understand why it's not sensible to deliberately leave a gaping security hole in the forums. I would have though that JF has had enough aggro with BoatMad recently without asking for more 
John
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What could possibly go wrong?
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17-03-2004, 10:04 AM
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#13
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numbskull
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast
Join Date: Mar 2004
Location: South
Posts: 15,959
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It's not fair when an IT expert picks on a poor Marine engineer, who's already out of his depth! this is in my black book Mr K!
Yours,
'Humiliated of Shepperton.'
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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17-03-2004, 10:44 AM
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#14
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Chief C*nt!
Country: United Kingdom
Location: Brighton
Occupation: Sparkler prefect
Interests: Boats
Boat make: Other people's mostly
Join Date: Mar 2004
Location: Brighton
Posts: 872
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I wasn't picking on you, I was picking on Matt 
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What could possibly go wrong?
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17-03-2004, 10:51 AM
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#15
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numbskull
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast
Join Date: Mar 2004
Location: South
Posts: 15,959
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I've turned off 'HTML' in posts on all forums exept 'Torkin bollix' which I'll do later once everyone's seen Missus's smilie links.
Joking apart, thanks for the wake-up call John.
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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17-03-2004, 12:51 PM
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#16
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numbskull
Country: United Kingdom
Location: South
Occupation: none
Interests: none
Boat name: Leviathan
Boat make: Phantom 28
Cruising area: South Coast
Join Date: Mar 2004
Location: South
Posts: 15,959
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Calm down everybody! no need for upset.
We'll just suck it and see.
JF
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"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013
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17-03-2004, 01:32 PM
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#17
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Chief C*nt!
Country: United Kingdom
Location: Brighton
Occupation: Sparkler prefect
Interests: Boats
Boat make: Other people's mostly
Join Date: Mar 2004
Location: Brighton
Posts: 872
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Quote:
Originally posted by jon fuller
I've turned off 'HTML' in posts on all forums exept 'Torkin bollix' which I'll do later once everyone's seen Missus's smilie links.
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These don't actually need HTML as vB code will do the job just as well!
Quote:
Originally posted by Matt
I resent your implication that I would knowingly expose boatmad to undue risk. I can't be bothered to argue the toss so lets call it quits. It's Jons forum and if I post I'll follow his rules.
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Fair enough! No offence meant
John
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What could possibly go wrong?
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17-03-2004, 05:50 PM
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#18
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Registered User
Location: The Pit
Join Date: Mar 2004
Location: The Pit
Posts: 1,324
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Oh No...
I'd just trained myself up in putting them on via HTML...
I hope it's not going to be complicated !!!!
However security is important and input from all you IT eggsperts is welcome...(apart from Richard B's wevver forecasts!!!)
Can someone explain why HTML is an 'issue' ...???
Is it that dangerous?
(A yes or a 'nayMissus' will not do
 laugh:
I need dot-to-dot explanations!!!)
Naymissus
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17-03-2004, 05:57 PM
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#19
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Registered User
Location: The Pit
Join Date: Mar 2004
Location: The Pit
Posts: 1,324
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And WTH is
garfish????
Did a smiley gobble his definite article???
Missus ??????
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17-03-2004, 06:45 PM
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#20
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Registered User
Location: West Sussex
Occupation: fixin when its broke
Interests: Using it til it falls apart
Boat name: Black Widow
Boat make: Donzi 30' sportsboat
Engines: 2* 454
Cruising area: Solent + south coast
Join Date: Mar 2004
Location: West Sussex
Posts: 189
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HACKERS SECURITY LEAK AAAAAAAGH!
The Wazzok pin in the smiley engine right ... it could, if you're not careful endup thinking outside of the box and potentially allow the hetrogenoius and homologated systems to holistally approach a scope creep of the model, in the heirarchically openended object orientated topolgy of the seven layer pre emptive mutli tasking knitting pattern forwarding deamon.
Yes ...I think thats it
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