Route Calculation Time....

[pjpearce]

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








_________________
<br>
pjp

[hollis_f]

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

[aero]

Chorlie have a look at this link, it seems you can.

[Thud]

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

[georg]

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

[LeakyBucket]

iPaq 3850

128 Mb SD Card

TTN v2.24 GPS v 2.06 default speed settings

Calculation Time: 6 mins 40 secs




_________________
Remember! It's much more difficult to reboot your brain.

[nissemus]

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

[simkna]

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.

[Parky]

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

[Lost Cause]

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.

[LeakyBucket]

[/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


_________________
Remember! It's much more difficult to reboot your brain.

[Chorlie]

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

[Doghead]

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

[Trucker]

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

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 ?
_________________
Gary

Living from Layby to Layby !

[lbendlin]

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
_________________
Lutz

Report Map Errors here:
TomTom/TeleAtlas NAVTEQ

We see you’re using an ad-blocker. We’re fine with that and won’t stop you visiting the site.
Have you considered making a donation towards website running costs?.
Or you could disable your ad-blocker for this site. We think you’ll find our adverts are not overbearing!