Rerouting my route !!

[stevia13]

Is it just me or ...
... does my GPS try and recalculate, and so change, a route I have carefully planned on Mapsource.

How do I stop the GPS from doing this (Zumo 550 and Vista HCx).

 

[oldchris]

Add more waypoints to your route.

 

[Taff]

Is it just me or ... does my GPS try and recalculate, and so change, a route I have carefully planned on Mapsource. How do I stop the GPS from doing this (Zumo 550 and Vista HCx).

Don't know if you can with your Zumo, but with my 2610 and the previous SPIII I could just turn off Auto Recalculate? It's in one of the menu headings.

 

[Wapping]

It rather depends on when the recalculation is taking is place and, maybe, as to whether you are using the same mapsets on both your PC and the device.

When is the recalculation taking place, exactly?

I would start by with the simple things, first:

Check your settings.

If you have autorecalculate set to ON, then it may well change your route, as that is what you have asked the machine to do.

 

[Berin]

Yes, turn off auto recalculate.

Also, if the version of maps you create the route in in Mapsource is not the same as the version in your Zumo it may try to recalculate. You can get round this by doing the following;

if you're using a route created in an on older version of citinavigator, open up the route in mapsource, recalculate and resave it and then download it to the zumo - caveat being that, as above, the mapping must be the same on the Zumo and in Mapsource.

 

[stevia13]

I think what is happening sometimes is that, having imported a route onto the gps, the gps then asks if I want the shortest or the fastest route! Well no - I just want the route I have created using Mapsource. What do you think then?

 

[Redboots]

I just want the route I have created using Mapsource. What do you think then?

On the GPS, go to Setup>Routing>Follow Road Options>Off Route Recalculation>Set to OFF.

THEN, Load your saved route. When the unit prompts you for Follow Road or Off Road, you must select Follow Road.
When it prompts you for Fastest or Shortest, it does not matter which you select, it then "calculates" the route, and the result is, it is identical to the route you made in MapSource.

Thats the theory anyway

John

 

[Wapping]

I think what is happening sometimes is that, having imported a route onto the gps, the gps then asks if I want the shortest or the fastest route! Well no - I just want the route I have created using Mapsource. What do you think then?

So you are not sure.... so how are we meant to know?

I might think your mapsets are different.... or that you are importing a route made / saved in an earlier (or different) version of map, so of course they do not match.... and the device needs to recalculate.... but that's just me.

See if I am right.

Are the mapsets the same?

What settings are your device on?

When exactly does it happen?

 

[Berin]

Also, if the version of maps you create the route in in Mapsource is not the same as the version in your Zumo it may try to recalculate. You can get round this by doing the following;

if you're using a route created in an on older version of citinavigator, open up the route in mapsource, recalculate and resave it and then download it to the zumo - caveat being that, as above, the mapping must be the same on the Zumo and in Mapsource.

I might think your mapsets are different.... or that you are importing a route made / saved in an earlier (or different) version of map, so of course they do not match.... and the device needs to recalculate.... but that's just me.

See if I am right.

Are the mapsets the same?

 

[Wapping]

It rather depends on when the recalculation is taking is place and, maybe, as to whether you are using the same mapsets on both your PC and the device.

Your go.

 

[Berin]

Your go.

Ah

Anyway, I think he needs to check if the maps are same on the Zumo and Mapsource:

 

[Wapping]

Anyway, I think he needs to check if the maps are same on the Zumo and Mapsource:

Of course!

Why has nobody suggested that already?

 

[E. Buygum]

I think what is happening sometimes is that, having imported a route onto the gps, the gps then asks if I want the shortest or the fastest route! Well no - I just want the route I have created using Mapsource. What do you think then?

With Autorecalculate ON, even assuming the map sets match , the slightest deviation from the route e.g. pulling into a petrol station or encountering a recent change in road lay out will cause the GPS to recalculate, you then are being given the choice of how you want the recalculation to take place i.e. shortest/ fastest. If you can't switch off Autorecalculate (assume you have tried?) you have a problem.

However, the recalculation will only be to the next waypoint so (as has already been observed by oldchris), using multiple waypoints will minimise the detour. If you move off route and have managed to suppress Autorecalculate, you need to head in the general direction of the route. It's highlighted and sometimes zooming out is useful.

 

[Wapping]

What news Stevia13 on:

(a) Whether you have worked out exactly when the recalculation occures

(b) Whether the matsets match on the GPS device match those on your PC.

(c) Whether you are importing 'old' routes (following roads that have now changed) into a 'new' GPS device.

(d) What waypoints, if any, you had in the route.

E.Buygum and others are right, of course.

GPS waypoints are nothing more than very specific 'beacons' on an electronic map. They are points used very often in sailing and / or desert (or wild country) circumstances to lay out a course where there is no other easy way of marking out a clear route, one bit of sea or sand looking much like another, after all. Don't confuse them with viapoints, which are simply a routing tool.

Inserting lots of waypoints can be a double edged sword. Yes, the device will reroute to go through the points, as that is what it has been instructed to do, clearly. In other words, you have told the device, "I must go through these very specific points', so it will try its very best to take you through them, no matter what.

This is fine until you have a detour, which occurs before the waypoint, but finishes after the waypoint. The device will very often keep sending you backwards, so that you can go through the waypoint and then continue, as that is what you have asked it to do. You would be equally upset if it ignored the waypoint, I suspect.

So, use a little common sense. Override the device's instructions when you need to. To do this well it helps to have the route written down and / or a map, rather than blindly follow a screen and a device that is is only trying its best to do exactly what you told it to do.

Similarly, recalculate is double edged, too. For instance, it is very useful if you miss a specific turning in a city and overshoot your hotel. It will bring you back to the hotel, no matter what. Use it properly and it's great.

Me? I have the recalculation function 'half on'. In other words, if I do want it to recalculate (for instance in a city , having missed a hotel's front door) I say, "Yes". If in the country, or I can work out how to simply get back onto the route, I say "No".

 

[stevia13]

Can I ask this question :
I have the most recent version of Mapsource, which is a free download.
However, I am presently using City Navigator Europe NT 2008.

Dont really want to update City NAvigator every time a new version comes out - dont feel this is necessary, either logistically or financially.

So, does this clarify the mapping question?

Further, in order for Mapsource and City Navigator mapping to be compatible, do you HAVE TO have the most recent version of each. Surely they are both not updated at the same time or frequency? - or are they?

 

[Bumpkin]

Can I ask this question :
I have the most recent version of Mapsource, which is a free download.
However, I am presently using City Navigator Europe NT 2008.

Dont really want to update City NAvigator every time a new version comes out - dont feel this is necessary, either logistically or financially.

So, does this clarify the mapping question?

Further, in order for Mapsource and City Navigator mapping to be compatible, do you HAVE TO have the most recent version of each. Surely they are both not updated at the same time or frequency? - or are they?

No, Mapsource is the application, City Nav is the mapping data displayed and manipulated within it. You can update Mapsource and still use your old mapping.

 

[Berin]

No. The question is, do you have the same version of City Navigator both on your PC (accessed via mapsource) and on your Zumo? You need to look at the mapping on your Zumo and see if it City Navigator Europe NT 2008.

Can I ask this question :
I have the most recent version of Mapsource, which is a free download.
However, I am presently using City Navigator Europe NT 2008.

Dont really want to update City NAvigator every time a new version comes out - dont feel this is necessary, either logistically or financially.

So, does this clarify the mapping question?

Further, in order for Mapsource and City Navigator mapping to be compatible, do you HAVE TO have the most recent version of each. Surely they are both not updated at the same time or frequency? - or are they?

 

[Wapping]

Stevia13, may I make a suggestion?

Tell us:

(a) The exact version of map you are running on your PC.

(b) The exact version of map you are running on your GPS device.

(c) Are the versions the same, right down to the V1... V1A.... V1B... letters, or whatver it is that Garmin use differentiate between maps?

I forget how to find the map details on the GPS device, but it's not difficult. Try Tools, or Properties, or Details.... or whatever it is they call it. Eventualy it will pop up.

While you are at it, run Garmin's webupdater to make sure the software on your GPS device is up to date. It will do it automaticaly, I think in two stages. Follow the prompts.

When you have (a) (b) (c) and have made the software check, come back to us with the answers.

Then, answer these questions, please:

(1) When exactly does the Recalculate prompt come up? Your initial post was vague.

Is it:

(a) When you open a route on your GPS device?

(b) While you are riding?

(c) Both?

(2) If you draw a new route on your PC, today, and send it to your GPS device, do you get the recalculation prompt?

Do it again, with another fresh route. Does it happen?

(3) If you find an old route (one you perhaps saved on your PC from a while ago) and send it to your GPS device, do you get the recalculation prompt?

Try it again with another old route, maybe the first one you ever created if you can remember what it was. Does it happen?

(4) Are you loading routes from a third party, for instance from a friend who has sent you a route to share? If so, does the prompt come up?

Let us know the answers.

 

[Wapping]

Stevia13

To find your map details on a Garmin gps device (or at least on my 660):

Tools

Settings

Map

Map info.

Mine is showing CN europe NT 2010.2 on both my PC and on my gps device, ie. they are both the same. What's the news on yours?

 

[stevia13]

OK - I have a laptop and a little netbook both with latest version of Mapsource on. However netbook, which did not have a CD drive, was running an older version of City Navigator. Copied the necessary files onto a portable drive - and now have 2008 City Navigator on GPS, and both computers, so should be ok..

.. but, spoke to Sam at Garmin UK who says that the only real way to stop your GPS route IN ANY WAY from changing a carefully planned route on Mapsource is to put in lots and lots of map points!! - what a pain this would be if you are on a long extended trip!

I guess I can turn recalculate to either off or prompted on the GPS device with the same effect. BUT, I really just want to be assured that a route planned at length on Mapsource will be followed religiously by the GPS device ...