GPS-Sport ForenRun.GPS SoftwareAnstatt Kacheln einen Container anlegen
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kenu 30.11.2010 22:28:56 UTC



Hallo Tom,

ersteinmal ein dickes Dank für die Realisierung dieses Feature und ein dickes Lob für die Umsetzung und das Handling.
Ich habe das heute erst ausprobieren können und bin total begeistert und werde bestimmt noch viel Spaß und viele weitere Ideen damit haben.

Liebe Grüße

kenu
Tom 29.10.2010 16:01:48 UTC



Run.GPS Atlas format does not use additional compression - it stores the compressed PNG files. The size of the Atlas file is the size of all single files plus the size of the index (which is very small). This means that there is no smaller format possible, unless you use additional compression, which may spare you another max 5% size but would make everything much slower. Or you leave part of the data away (by recomputing the map tiles), but that was no option for us.

The OruxMaps format is a format that uses many files, not just one as the .ratlas format. (Or did you mean OruxMaps Sqlite?)

Comparison of a sample map download:
- OruxMaps produces 277 files, 6.8 MB
- OruxMaps Sqlite produces 2 files, 6.3 MB
- Run.GPS Atlas produces 1 file, 2.3 MB


Theo 29.10.2010 09:10:49 UTC

No Problems at all!

Hi kogi13,

I cannot confirm your tests. Before this "atlas-container" my OSM-Maps
needed 626 MB Space on a 4GB/Fat32 sd-card - by 221 MB file size!
The "Atlas-container" has a size of 221MB on the sd-card (filesize and space).

Performance-tests are outstanding. Seems to work fast enough.

Regards,
Martin
kogi13 24.10.2010 22:26:23 UTC

not size efficient

Hi

I downloaded and created an atlas of whole switzerland. But the file ratlas files gets way too big: 14GB! I created with the same configuration an atlas for orux-maps and there the size is 2.6GB.. so ratlas is 5.4 times bigger! I think this is not really efficient and not usable as you said it was one of the reason to create you own format.
what are your comments on this?

Regards
parn 24.10.2010 19:00:16 UTC geändert am 24.10.2010 19:07:25 UTC

Performance-Test

Hi,
I did a performance test on the new Atlas file format:
Prerequisites:
- MDA Compact V (= HTC Touch Diamond 2) with Windows Mobile 6.2,
- sandisc micro-sd 8 gb,
- netbook with WinXP
sd-encryption on Windows Mobile is switched on.

I created an atlas-file from all osm-files downloaded using RunGPS on my MDA.
file size of atlas file is about 350 mb.

first attempt: copied atlas file via active-sync to sd-card (this creates an encrypted file on sd-card (Windows Mobile encryption))
result: access time to map was 4 to 7 times slower than the standard osm-files

second attempt: copied atlas file via a card reader (so the file is not encrypted)
result: access time to map was almost equal to standard osm-files (ratio 1 to 1.2)

summary: if You use atlas file, make sure that it will not be encrypted by the device

hope that helps...

P.S.: I had to fix some minor bugs (regarding fileseparatorchar and 0 Byte files) in the RunGPSAtlasFile.java provided on http://www.rungps.net/wiki/RunGPSAtlasFormat. Is there anyone who wants to get a diff-file or the changed source file?
kogi13 22.10.2010 15:46:33 UTC



It works great now. thanks for the fast bugfix...
admin 22.10.2010 15:18:26 UTC



The error has now been fixed and an updated release has been uploaded to

http://www.rungps.net/wiki/RunGPSAtlasFormat

The error occurred on PCs, but not on Macs and Linux machines.
admin 22.10.2010 13:48:54 UTC



OK we got the information via phone now and could reproduce the error. The error only occurs on PCs, not on Macs and Linux machines.

We'll soon provide a fixed version.
admin 22.10.2010 13:40:49 UTC



We're currently working on the problem. For us the problem currently is that we do not get the crash ...

Could somebody please describe from map source (OpenStreetMap, Google, ..) you're trying to download and what geographic region you're downloading? Which zoom levels did you select for download?

Thanks!

kogi13 22.10.2010 12:26:25 UTC



wäre super mit diesem Format..
Bekomme diesselbe Fehlermeldung wie OpenBiker. Wenn ich die erzeugten Files dennoch herunterlade, wird nichts angezeigt...
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