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Messages - Mr Yod

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Information / Re: [MANUAL] - using SQL map files bigger then 2GB
« on: March 17, 2011, 17:07:38 »
Quote from: "menion"
hey what is this? Really so big difference?? have to check :)
There's the "MOBAC's cache issue" too, like I explained in my edit at the end of my previous post
I made another test: I deleted all the MOBAC's cache and downloaded again the same area I used for the previus tests to see how much memory would take the cache.
The results are the following:
google earth: 450MB
google hybrid: 57MB
total memory used: 508MB

So: how's possible that rmaps sqlite file takes over 5GB?
The same space is taken if I use the "TrekBuddy tared atlas" option (I wanted to see if a tar archive would have taken less space)

Quote
Anyway you can use bigger maps now, If you prepare them in small part, but I'm sure you know about it ...
yes, I know: I already read it.

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Information / Re: [MANUAL] - using SQL map files bigger then 2GB
« on: March 17, 2011, 14:44:14 »
If a map file greater than 2GB doesn't work, why not reduce the dimension of the file itself?


Let me explain.
I made some tests using Mobile Atlas Creator making a map with the following features: google hybrid, 3x3 blocks with grid zoom 12 and zoom from 12 to 18 (not very big map, but big enough in storage terms).

I made that map using the "RMaps SQLite" option and the map file is 5.48GB (really HUGE for a map with an area of about 25km x 25km), then I made the same map using the "OruxMaps SQLite" option and the map file is 641MB (yes: 9 times smaller).

So: somehow the oruxmaps sqlite file is compressed and, in my opinion, some sort of compression could help both for the storage (less memory required) and for the use (the file can be opened).


EDIT: I looked at the MOBAC cache: google earth, google maps and google hybrid take 1.96GB of total space (1.78GB google earth, 1MB google maps and 179MB google hybrid); considering that I used the cache to make that map, how is possible that the rmaps sqlite file takes 5.48GB?

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