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Mobile Atlas won't download map

 
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werd



Joined: 27 Apr 2010
Posts: 2

PostPosted: Mon May 10, 2010 10:45 pm    Post subject: Mobile Atlas won't download map Reply with quote

I am trying to download a map of Australia but I get the error

"mobile atlas creator has detected that you are trying to download an extra ordinary large atlas with a very high number of tiles. please reduce the selected areas on high zoom levels and try again."

I want to create a map with zoom levels 4 - 17
How can I make such a large map?
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TehJumpingJawa



Joined: 08 May 2010
Posts: 6

PostPosted: Tue May 11, 2010 9:55 am    Post subject: Reply with quote

Do you mean zoom levels 1 through to 13?

Zoom level 17 for the entire of Australia would be a mindbogglingly large number of tiles.
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werd



Joined: 27 Apr 2010
Posts: 2

PostPosted: Tue May 11, 2010 9:58 am    Post subject: Reply with quote

I did mean 4 - 17.
It's a big country.
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8FtjR4ym



Joined: 29 Jul 2010
Posts: 1

PostPosted: Thu Jul 29, 2010 1:48 pm    Post subject: Reply with quote

Guess you are just going to have to find a better program
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Cactus



Joined: 14 Dec 2007
Posts: 214
Location: Fife, Scotland

PostPosted: Thu Jul 29, 2010 3:01 pm    Post subject: Reply with quote

You may find that every other zoom level will be enough. Also consider the storage requirements for the downloads and the size of the resulting atlas.

That being said, while trying to do something similar for the UK I ended up creating a number of areas (8 in my case) overlapping by 0.03 degrees (about 1 tile at level 16), selecting levels 8, 10, 12, 14 and 16 in Google street maps and levels 8 and 15 for Multimap Ordnance Survey. The areas were tailored to come in under Mobac's tile warning limit at level 16. Also used 4 bit png to minimise storage (this does lead to the colours varying a little from map to map). Then I rearranged the xml to group the maps by source and zoom level, created a TB untared atlas and then tared it using a script. Took days to run to completion, involving rerunning sections (hence doing the tar/tmi/atlas work separately) after download errors and kids switching off the computer and also clearing lots of hard disk space. Came in just short of 10 GB.

Using a number of areas also meant that I didn't waste space and time processing large areas of sea. Mobac can handle a polygon boundary definition, but it doesn't (yet) divide the polygon into suitable TB-sized maps. Using Mobac's Display selected area function allowed me to delete any that were entirely sea as well.

Alternatively, could this limit be removed from Mobac for those who don't mind the excessive time and disk space?

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cragganmore



Joined: 23 Nov 2008
Posts: 46

PostPosted: Sat Jul 31, 2010 10:07 am    Post subject: Reply with quote

werd wrote:
I did mean 4 - 17.
It's a big country.


And a mindboggling large number of tiles, as stated before. Based on an extrapolation of level 9 your request would have about 290 million tiles which give a raw data amount of about 58 terabytes. A colour reduction to 256 colours would shrink this to 19 terabytes.

I guess you're a bit out of range.

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