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Add option to set starting zoom level

description

Why are we requesting DeepZoom images for levels 0 through 6? These images vary LITTLE in size because they are header heavy. They also take up more network traffic than they are worth. Let's add an option for a starting zoom level that the client can set.

For example zoom level from 0 to 7 the sizes for the sample website's test image go as follows:
0 - 632 bytes - 1x1 pixels
1 - 678 bytes - 2x2
2 - 699 bytes - 4x3
3 - 703 bytes - 8x6
4 - 863 bytes - 15x11
5 - 1.35 kb - 29x22
6 - 3.15 kb - 57x43
7 - 9.82 kb - 114x86
Closed Sep 9, 2010 at 9:10 PM by hobbes2k
Added minTileLevel to Seadragon.Config. Can be set directly in Config section or on the viewer object (e.g. viewer.config.minTileLevel = 5; )

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