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Route Calculation Time....
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pjpearce
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Joined: 26/05/2003 13:40:51
Posts: 18
Location: United Kingdom

PostPosted: Sun Sep 14, 2003 8:04 am    Post subject: Route Calculation Time.... Reply with quote

Here's some stats. for an O2 XDA (206MHz) with TTN2 v2.24(361), GPS v2.06 and a 256Mb IntegralMemory SD card.



All road speed settings are at the default.



Land's End to John O'Groats



Calculation Time: 9m26s

Roads           : 188267

Journey Time    : 12:49:55








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hollis_f
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Joined: 11/10/2002 06:31:24
Posts: 98
Location: United Kingdom

PostPosted: Sun Sep 14, 2003 8:04 am    Post subject: Route Calculation Time.... Reply with quote

iPAQ 3970 PPC2K2 with latest ROM and SD upgrade overclocked with PHM to 472MHz.

Sandisk 256MB SD for maps.

Road speeds default.



Calculation time: 2:34

Roads: 203860

Journey Time: 13:52:25

Journey Distance: 844.0
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aero
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Joined: 12/03/2003 01:20:45
Posts: 121
Location: United Kingdom

PostPosted: Sun Sep 14, 2003 8:04 am    Post subject: Route Calculation Time.... Reply with quote

Chorlie have a look at this link, it seems you can.
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Thud
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Joined: 09/07/2003 22:52:18
Posts: 32
Location: United Kingdom

PostPosted: Sun Sep 14, 2003 8:04 am    Post subject: Route Calculation Time.... Reply with quote

At the risk of being flamed for being on the wrong forum....



iPAQ 5450 with CoPilot 4 Live



Land's End to John O'Groats



Calculation Time: 11 seconds

Distance            : 838.9 miles

Journey Time     : 15:43



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georg
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Joined: 12/12/2002 23:48:50
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Location: United Kingdom

PostPosted: Sun Sep 14, 2003 8:04 am    Post subject: Route Calculation Time.... Reply with quote

HP Jornada 568

128 Compact Flash

TTN v2.24 GPS v 2.06 default speed settings

From B3315 Land's End to A99 John O'Groats

Journey Dist 836.3

Calc time : 2min 10sec (two min : ten sec)

Roads : 198.908

Journey time : 14.21.30
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LeakyBucket
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Joined: 02/12/2002 15:11:19
Posts: 11
Location: France

PostPosted: Sun Sep 14, 2003 8:04 am    Post subject: Route Calculation Time.... Reply with quote

iPaq 3850

128 Mb SD Card

TTN v2.24 GPS v 2.06 default speed settings

Calculation Time: 6 mins 40 secs




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nissemus
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Joined: 14/08/2003 21:03:47
Posts: 11
Location: United Kingdom

PostPosted: Sun Sep 14, 2003 8:04 am    Post subject: Route Calculation Time.... Reply with quote

iPaq 2210

128Mb CF card

TTN 2.24, GPS 2.07, default speed settings

From B3315 Land's End to A99 John O'Groats



Calculation time: 1 minute 57 seconds

No. of roads: 189,908

Total distance: 820.2 miles

Journey time: 13.59.45

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simkna
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Joined: 24/01/2003 11:34:45
Posts: 101
Location: United Kingdom

PostPosted: Sun Sep 14, 2003 8:04 am    Post subject: Route Calculation Time.... Reply with quote

Toshiba e570 206mhz

Sandisk 128mb SD

TTN 2.24 GPS 2.07 default



Calc : 7:41

Distance : 838.9

Travel time : 14:37:40



Si. Time to upgrade methinks.
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Parky
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Joined: 25/05/2003 09:12:02
Posts: 247
Location: Bradford UK

PostPosted: Sun Sep 14, 2003 8:04 am    Post subject: Route Calculation Time.... Reply with quote

Ipaq 5450

128 Sandisk SD Card

TTN 2.24 GPS 2.07 default speed settings



Calculation Time 3min 40 secs

No. of roads 180,086

Total distance 812.5 miles

Journey time 13.49.15



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Lost Cause
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Joined: 06/06/2003 10:17:21
Posts: 57
Location: United Kingdom

PostPosted: Sun Sep 14, 2003 8:04 am    Post subject: Route Calculation Time.... Reply with quote

iPAQ 2210

Sagatek 256mb CF

TTN 2.24 GPS2.06

Default speed settings



Calc: 1 min 49 secs

Distance 836.1 miles

Travel Time: 13 hours 5 mins



Performed after a soft reset.

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LeakyBucket
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Joined: 02/12/2002 15:11:19
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Location: France

PostPosted: Sun Sep 14, 2003 8:04 am    Post subject: Route Calculation Time.... Reply with quote

[/QUOTE]



Anyone know why Copilot is so quick?



[/QUOTE]



there many reasons why the timings would be different:



1. The maps used by CoPilot might not have the same data as TTN2 (I don't have CoPilot). If CoPilot doesn't show the same number of roads then the search could be considerably lighter.



2. The algorithm used may be very different. For example, TT appears to perform a full search, but maybe CoPilot performs a quick search that uses some comprises.



3. Even if the 2 programs have the same map and algorithm there could be a very large differences in the way they are implemented. Speed and efficiency isn't always the programmers priority: the slow correct answer is always preferable to the fast wrong answer.



HTH,



Stephen





Weighted graph searching is a difficult mathematical problem


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Chorlie
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Joined: 30/07/2003 16:33:35
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Location: United Kingdom

PostPosted: Sun Sep 14, 2003 8:04 am    Post subject: Route Calculation Time.... Reply with quote

Can you over clock a Dell Axim?
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If it isn't broken, play with it some more...

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Doghead
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Joined: 20/03/2003 01:56:11
Posts: 85
Location: Manchester_UK

PostPosted: Sun Sep 21, 2003 1:11 pm    Post subject: Reply with quote

Stats re the initial test from Land's End to A99 John O'Groats

Dell Axim (basic 32 rom 32 ram - A00 version)

128 Mb SD Scandisk

TTN v2.24 GPS v 2.06 default speed settings

Journey Dist: 834.7 miles

Calc time: 3min 50sec

Journey time: 14.20:20
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Trucker
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Joined: Sep 22, 2003
Posts: 30
Location: West Row, Suffolk

PostPosted: Tue Sep 23, 2003 12:21 am    Post subject: Reply with quote

Ok then folks, chew on this !!

iPAC 3970

TTN 2.22

Lexar 128mb SD

Using the original route it took 22 minutes to 97464 roads with 194.43 miles to go and at that point I got bored and binned the idea Smile

Now my speed setting are set for my truck and are:

M-way - 60
Major Road 50
secondary road 40
connecting road 30
local road 25
and destination road 20

Is this why it's taking soooooo long or is there another problem here.
My 3970 has always been slower than my wife's 3950 but she is running the default speed settings.
Any thoughts ?
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lbendlin
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Joined: 02/11/2002 22:41:59
Posts: 11878
Location: Massachusetts, USA

PostPosted: Tue Sep 23, 2003 5:42 pm    Post subject: Reply with quote

Here are some suggestions on improving the routig result. Not necessarily the calculation times... but it is worth a try.

Road type...................Speed set 1..........Speed set 2
Motorway............................60..........................60
International road...............45..........................45
Major road.........................45..........................45
Secondary road................40..........................40
Connecting road............... 33..........................35
Important local road...........37..........................35
Local road.........................30..........................30
Destination road................25..........................20

There will be some warnings regarding longer calculation times, but that's just because the numbers deviate from the defaults. I have had excellent results with set #1. Speeds are in mph
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