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uffe73 Frequent Visitor
Joined: Jul 23, 2004 Posts: 521 Location: Sweden
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Posted: Sun Dec 09, 2007 6:57 pm Post subject: How can I see what POIs are updated? |
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Maybe this has been discussed in some thread already, but I couldn't find it.
I downloaded my first POI updates today via MapShare which resulted in a number of new files in the map directory named CAxxxx.ov2. I assume that each ov2 file corresponds to a POI category. As I wanted to see which POIs were udated I copied these new files to a directory on my PC and tried to open them from PoiEdit. The problem is that PoiEdit reports the file as being an illegal ov2 file. The file format must be different from other POI files that you can add manually. Does anyone know how this works? Is there a way to examine these POI updates?
I'm also lacking an option in Home to chose whether you want POI updates for the whole of Europe or only for your region (your country). I'm not so keen on filling up my unit with POI files for Spain unless I'm on my way there myself. |
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baystonhill Lifetime Member
Joined: Mar 17, 2006 Posts: 23 Location: U.K
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Posted: Sun Dec 09, 2007 7:31 pm Post subject: |
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Your slightly wrong .. the Caxxx files have come via mapshare but are tomtom corrections which maybe not poi updates..... guess it depends where your getting your pois from ... poi's as far as i know will appear as ov2 files , what i do an its a pain is to take the new file before downloading to tom tom and open in something like poledit , and compare it to the file on your tomtom ... but its hard work |
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uffe73 Frequent Visitor
Joined: Jul 23, 2004 Posts: 521 Location: Sweden
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Posted: Sun Dec 09, 2007 7:48 pm Post subject: |
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Oki, you may be right. It's just that TT Home wrote on the screen that it was downloading new POIs and afterwards I had all these new CAxxxx.ov2 files. Another thing I noticed was that poi.dat and crpoi.dat were left untouched. However there was one new file named DeletedPoi.dat. If your reasoning is correct, it implies that no new POIs were downloaded but only a list of deleted ones. But how would I examine a dat file? POI-Edit for sure doesn't read that file format. |
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baystonhill Lifetime Member
Joined: Mar 17, 2006 Posts: 23 Location: U.K
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Posted: Sun Dec 09, 2007 8:23 pm Post subject: |
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Be careful i think your at risk of corrupting your tomtom , from the filext.com website a dat file is "Can be just about anything: text, graphic, or general binary data. There is no specific structure for a .DAT file. You can use an editor like EditPad Pro to look inside a .DAT file and possible determine its contents and relationship with a program." where as an ov2 is a Program File - Overlay .. the difference the one is instruction code , the other info.[/b] |
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Oldboy Pocket GPS Moderator
Joined: Dec 08, 2004 Posts: 10642 Location: Suffolk, UK
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Posted: Sun Dec 09, 2007 8:23 pm Post subject: |
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This is an approximation of what each CAxxxx is a POI for. Some of the Names have changed slightly, but the category is basically the same.
Code: | 7367 Government Office
9364 mountain Peak
7369 Open Parking
7313 Parking Garage
7311 Petrol Station
7380 Railway Station
7395 Rest Area
7383 Airport
9910 Car Dealer
7341 Casino
9906 Church
7342 Cinema
7379 City Center
9352 Company
9367 Concert Hall
9363 Courthouse
7319 Cultural Center
7385 Exhibition Center
7352 Ferry Terminal
7366 Frontier Crossing
9911 Golf Course
7321 Hospital Polyclinic
7314 Hotel/Motel
7376 Tourist Attraction
9935 mountain Pass
7317 museum
9365 Opera
7339 Place of Worship
7324 Post Office
7312 Rent Car Facility
9930 Rent Car Parking
7315 Restaurant
9361 shop
7373 shopping Center
7374 stadium
7318 Theatre
7316 Tourist Information Office
9927 Zoo
7320 sports Centre
7322 Police Station
7365 Embassy
7377 College University
7397 Cash Dispenser
9357 Beach
9360 Ice Skating Ring
9369 Tennis Court
9371 Water Sport
9373 Doctor
9374 Dentist
9375 Veterinarian
9379 Nightlife
9902 Amusement Park
9913 Library
7310 Car Repair Facility
7326 Pharmacy
7337 scenic/Panoramic View
7338 swimming Pool
7349 Winery
7360 Camping Ground
9362 Park and Recreation Area
9377 Convention Centre
9378 Leisure Centre
9380 yacht Basin
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_________________ Richard
TT 910 V7.903: Europe Map v1045
TT Via 135 App 12.075: Europe Map v1120 |
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uffe73 Frequent Visitor
Joined: Jul 23, 2004 Posts: 521 Location: Sweden
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Posted: Sun Dec 09, 2007 9:02 pm Post subject: |
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baystonhill wrote: | Be careful i think your at risk of corrupting your tomtom , from the filext.com website a dat file is "Can be just about anything: text, graphic, or general binary data. There is no specific structure for a .DAT file. You can use an editor like EditPad Pro to look inside a .DAT file and possible determine its contents and relationship with a program." where as an ov2 is a Program File - Overlay .. the difference the one is instruction code , the other info.[/b] |
As long as I don't open the file directly from the TT GO but copy it to my PC it should be safe. I haven't come across EditPad Pro.
Oldboy wrote: | This is an approximation of what each CAxxxx is a POI for. Some of the Names have changed slightly, but the category is basically the same. |
Thank you Oldboy! So there is indeed a relationship between the CAxxxx.ov2 files and the POI categories. Strange that the files cannot be opended in POIEdit then. |
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Oldboy Pocket GPS Moderator
Joined: Dec 08, 2004 Posts: 10642 Location: Suffolk, UK
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Posted: Sun Dec 09, 2007 11:18 pm Post subject: |
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uffe73 wrote: | So there is indeed a relationship between the CAxxxx.ov2 files and the POI categories. Strange that the files cannot be opended in POIEdit then. | Have a look at This Topic to see how the CAxxxx files work.
There are a number of different 'types' of OV2 Files. Most are Type 0, 1, 2 or 3.
POIs that are created on the TT Devices now are Type 100. (A TT idea. )
These types POIEdit can read.
The CAxxxx.OV2 are of a different Type again. TT probably being security minded. _________________ Richard
TT 910 V7.903: Europe Map v1045
TT Via 135 App 12.075: Europe Map v1120 |
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Andy_P Pocket GPS Moderator
Joined: Jun 04, 2005 Posts: 19991 Location: West and Southwest London
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Posted: Sun Dec 09, 2007 11:33 pm Post subject: |
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baystonhill wrote: | Your slightly wrong .. the Caxxx files have come via mapshare but are tomtom corrections which maybe not poi updates.....
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That is incorrect, I'm afraid.
The CAxxxx.ov2 files are ONLY POI updates (incoming). Your outgoing corrections are in the PAxxx.ov2 files.
Any mapshare updates to the mapping itself come in the ServerNameIndex, ServerLineIndex and MapServerPatch .dat files. |
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Infama Regular Visitor
Joined: Jul 19, 2007 Posts: 172 Location: Switzerland
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Posted: Wed Jan 23, 2008 10:50 pm Post subject: |
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The CRPOI.dat files are the map share correction files. |
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Andy_P Pocket GPS Moderator
Joined: Jun 04, 2005 Posts: 19991 Location: West and Southwest London
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Posted: Thu Jan 24, 2008 2:37 am Post subject: |
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Infama wrote: | The CRPOI.dat files are the map share correction files. |
I beg to differ, I'm afraid.
In all the time I've used Mapshare, the crpoi.dat file (only one of them) has never changed. It is the same size as it was on day one, and the "modified on" date never changes.
The three files I mentioned above (ServerNameIndex.dat, ServerLineIndex.dat and MapServerPatch.dat) DO change whenever you do a Mapshare update, however. |
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Infama Regular Visitor
Joined: Jul 19, 2007 Posts: 172 Location: Switzerland
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Posted: Thu Jan 24, 2008 10:40 am Post subject: |
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Andy_P2002 wrote: | Infama wrote: | The CRPOI.dat files are the map share correction files. |
I beg to differ, I'm afraid.
In all the time I've used Mapshare, the crpoi.dat file (only one of them) has never changed. It is the same size as it was on day one, and the "modified on" date never changes.
The three files I mentioned above (ServerNameIndex.dat, ServerLineIndex.dat and MapServerPatch.dat) DO change whenever you do a Mapshare update, however. |
Well,
I just got this answer from TT yesterday....the rep escalated my question and a week later came back with this answer. I have had good responses from this person before, so the cred is high. |
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Andy_P Pocket GPS Moderator
Joined: Jun 04, 2005 Posts: 19991 Location: West and Southwest London
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Posted: Thu Jan 24, 2008 10:49 am Post subject: |
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Well, all I can say is that I have eight backups of my Go720 with it's original v705 map. There is a crpoi.dat file in the "day one" backup and the file size and date is unchanged in every one of the others, (and on the TomTom).
I have two backups of the v710 map and the crpoi.dat file is also unchanged.
I am subscribed to Map Share and get regular downloads. If I check the folder immediately before and after a Map Share update, the CAxxxx.ov2 files alter for any POIs updated and the ServerNameIndex.dat, ServerLineIndex.dat and MapServerPatch.dat all change too.
Believe who you like, but TomTom "support" have told people all sorts of rubbish before. (HERE'S an example from just yesterday!) |
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GerryC Pocket GPS Moderator
Joined: Mar 01, 2005 Posts: 1513 Location: West Mids
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Posted: Thu Jan 24, 2008 12:11 pm Post subject: |
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baystonhill wrote: | Be careful i think your at risk of corrupting your tomtom , from the filext.com website a dat file is "Can be just about anything: text, graphic, or general binary data. There is no specific structure for a .DAT file. You can use an editor like EditPad Pro to look inside a .DAT file and possible determine its contents and relationship with a program." where as an ov2 is a Program File - Overlay .. the difference the one is instruction code , the other info.[/b] |
Just to add that the list is the recommended use of extensions in a Windows system. There is no need to save eg a Word file as .doc etc.
The TomTom is Linux (?) based though and doesn't have to follow this convention though mostly does. This is especially true with the .chk files which are important data files not corrupted ones (similarly .mac and .avi). The system files don't even have extensions.
I would trust Andy's knowledge above TomTom's any day. _________________ Gerry
TomTom730T
Cameralert for Android
Brodit ProClip mount |
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Infama Regular Visitor
Joined: Jul 19, 2007 Posts: 172 Location: Switzerland
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Posted: Thu Jan 24, 2008 1:56 pm Post subject: |
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Andy_P2002 wrote: | Well, all I can say is that I have eight backups of my Go720 with it's original v705 map. There is a crpoi.dat file in the "day one" backup and the file size and date is unchanged in every one of the others, (and on the TomTom).
I have two backups of the v710 map and the crpoi.dat file is also unchanged.
I am subscribed to Map Share and get regular downloads. If I check the folder immediately before and after a Map Share update, the CAxxxx.ov2 files alter for any POIs updated and the ServerNameIndex.dat, ServerLineIndex.dat and MapServerPatch.dat all change too.
Believe who you like, but TomTom "support" have told people all sorts of rubbish before. (HERE'S an example from just yesterday!) |
Andy,
I have no doubt what you say is true! ( Heck, you even provided evidence).
However, it is possible that what you both say is true in part. Perhaps the way this whole correction thing works involves both files (even though CRPOI does not vary in size)?
The naming convention seems consistent, as CRPOI could very well mean correction to POIs.. Who knows?
The reason why I am trying to get to the bottom of this is that it may lead to a better understaning of how things work in NavCore 7, given the lack of an SDK. I see you have already partially solved the mechanism of how POIs are handled as Custom POIs vs built-in vs mapshare. It would be nice to have a complete overview.
Lets keep digging away. |
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Andy_P Pocket GPS Moderator
Joined: Jun 04, 2005 Posts: 19991 Location: West and Southwest London
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Posted: Thu Jan 24, 2008 2:36 pm Post subject: |
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Infama wrote: |
The naming convention seems consistent, as CRPOI could very well mean correction to POIs.. Who knows? |
don't forget there are "cnode.dat", "cline.dat", "cname.dat", which are three of the four "main" map files. So it could be "core" "rpoi"? or anything really!
Quote: | Lets keep digging away. |
Definitely!
Last edited by Andy_P on Thu Jan 24, 2008 3:30 pm; edited 1 time in total |
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