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popej
Poland
517 Posts |
 Posted - 28 janv. 2011 : 22:25:55
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I used to navigate routes with multiple via on my nuvi 205. It supports single active route. Since 37xx trips aren't usable for me, basically nuvi 37xx with current firmware is the same, it support one active route.
When adding via to active route nuvi 205 calculates best sequence of vias. It simply optimize route to get shortest distance or time. This is not the case with 37xx. When you add via to 37xx it makes a route to get first to the last added via. You can try to add via from the farthest point first, but if you'd like to correct route between 2 vias, you are out of luck.
I hope this is an error, not intended feature. My current firmware is 3.60 US/EU.
Edit: no change in firmwares up to 4.20
Here example of route created with 3760 and 205. nuvi 205 gets right route after adding 2 vias, nuvi 3760 makes route with no optimization. 3760 on left, 205 on right:
 
Here route imported from 3760 to Mapsource, you can see loops it has created:
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popej |
Edited by - popej on 07 juil. 2011 12:49:22
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Charon2000
Canada
4 Posts |
Posted - 06 févr. 2011 : 18:34:40
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| The ability to add more than one via was one of the reasons why I upgraded from my 1350. It's a bit of a letdown that the 3790 allows multiple vias but can't optimize them. |
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NanaimoRick
Canada
7426 Posts |
Posted - 07 juil. 2011 : 16:10:17
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Why not use Trip Planner? You can then add as many via points as you want, at any time, and have the Planner "Optimize Order". With the 3790 you can also just move the points around right on the Trip Planner screen, if needed, and when you press GO it will calculate the route in the order you have placed the via points.
If you don't use Trip Planner, Popej is right that the 37xx doesn't automatically optimize your via points. I'm not sure I ever used a Nuvi that did but I've never used a 2xx. Anyway, it works fine if you enter your destination first and then your via points in the correct order from there. Granted it would be easier if they auto optimized except in cases where you didn't want them to.;-) |
Rick James - Nuvi Forum Moderator
Nuvi 350 - Nuvi 760 - Nuvi 1695LM - Nuvi 3790LMT (with ecoRoutes HD) - Nuvi 2460LMT - Nuvi 3597LMTHD (with ecoRoutes HD) also TomTom 540S for side by side comparison >> Here <<
2010 Golf Wagon 2.0 TDI Clean Diesel
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popej
Poland
517 Posts |
Posted - 07 juil. 2011 : 18:35:23
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Imagine, that you want to add a gas station to multiple points route that you are currently driving. In some cases you will get route like above.
Imagine, that you want to add a VIA to correct your route, but not in the first leg. You can't.
Imagine, that you have some addresses, but you don't know what is the best sequence.
I'm not using trips, because they are unusable for long single pass routes. No arrival time, no TMC support, no possibility to skip VIA. But we have on forum enthusiastic review of trips by a courier delivering parcels ;)
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popej |
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AussieDJM
Australia
121 Posts |
Posted - 08 juil. 2011 : 11:20:09
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@popej re Imagine, that you have some addresses, but you don't know what is the best sequence.
There is an optimise order function on the trip planner screen in the 3790. Click on the three bar symbol for menu options. I assume this would provide best sequence based on routing choice.
Dave
Edit - Sorry. I see Rick already mentioned optimise order feature. |
Edited by - AussieDJM on 08 juil. 2011 11:23:30 |
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NanaimoRick
Canada
7426 Posts |
Posted - 08 juil. 2011 : 15:47:11
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| No problem AussieDJM. It's also possible to reorder point in the 3790's trip planner by just moving the points, using your finger, right on the the planner screen. Using the optimize function as you describe also works well. |
Rick James - Nuvi Forum Moderator
Nuvi 350 - Nuvi 760 - Nuvi 1695LM - Nuvi 3790LMT (with ecoRoutes HD) - Nuvi 2460LMT - Nuvi 3597LMTHD (with ecoRoutes HD) also TomTom 540S for side by side comparison >> Here <<
2010 Golf Wagon 2.0 TDI Clean Diesel
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danham
USA
7347 Posts |
Posted - 08 juil. 2011 : 16:04:47
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I found Trip Planner to be a bit buggy on the 1695. Maybe you'll have better luck, Rick [g].
-dan |
- Nüvi forum moderator -
Nüvi 760 in a '10 Jetta TDI Diesel SportWagen & zumo 660 on a BMW F800 ST
Guide to working with pre-programmed routes: >> details <<
Language Guide / US Topo / 350 & 680 / MacBook & Intel iMac with OS X & Win XP / BaseCamp / Cape Cod, MA
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popej
Poland
517 Posts |
Posted - 08 juil. 2011 : 17:28:10
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I think we all know, that with some extra work we can find a solution. We can use paper map too. But non of this will make 3700 more usable.
Algorithm for adding VIA is flowed. Nuvi adds VIA to list in a way, that was maybe convenient for a programmer but not for a user. Facts are:
- Some years ago Garmin was able to program this feature in nuvi 2x5 in a right way.
- Proper algorithm is simple, nuvi just have to check, on which position distances to nearest existing VIA are shortest. Even using direct distances should give acceptable results.
- The way this feature works now in 3700 is plain stupid.
Firmware errors are a problem but stupidity bothers me more. I'd like to know where designers of nuvi 2x5 series were gone. |
popej |
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AussieDJM
Australia
121 Posts |
Posted - 09 juil. 2011 : 04:50:34
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@popej
The 3790 is my first Garmin product so I'm not influenced by how things were done (better) on older models. I do 5000Km+ road trips and using trip planner to plan daily travel and stop overs works well for me.
I would have liked it to be able to access MY poi's rather than just the Garmin ones but I work around that using favourites or recently viewed where poi's are not in Garmin list.
I would also like option to bypass a via while travelling e.g decide on a different rest point that is past the planned one.
In general though it does what I need and has a great display. |
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popej
Poland
517 Posts |
Posted - 09 juil. 2011 : 14:13:24
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I'm glad you like your nuvi. I have started this thread to describe one particular problem in nuvi 3700, not to dismiss its usability.
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popej |
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37xx no route optimization when adding via
